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

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

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: #1C2B36;
  background-color: #F6F7F9;
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  margin: 0 0 0.6em;
  font-weight: 600;
  line-height: 1.35;
  color: #1C2B36;
}

p {
  margin: 0 0 1em;
}

a {
  color: #16324F;
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: #E8792A;
}

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

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

figure {
  margin: 0;
}

/* 锁定骨架 class 基础样式 */
.site-body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

.site-header {
  background-color: #FFFFFF;
  border-bottom: 1px solid #DDE3E9;
}

.site-footer {
  background-color: #16324F;
  color: #DDE3E9;
  margin-top: 48px;
}

.inner-main {
  background-color: #F6F7F9;
}

/* ============================================================
   layout
   ============================================================ */
.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand-logo {
  margin: 0;
  flex-shrink: 0;
}

.brand-logo a {
  font-size: 20px;
  font-weight: 600;
  color: #16324F;
  white-space: nowrap;
}

.brand-logo a:hover {
  color: #E8792A;
}

.main-nav ul {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-wrap: wrap;
}

.main-nav a {
  display: block;
  padding: 8px 14px;
  font-size: 15px;
  color: #16324F;
  border-radius: 6px;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.main-nav a:hover {
  background-color: #F6F7F9;
  color: #E8792A;
}

.main-nav a.is-current {
  color: #E8792A;
  font-weight: 600;
}

.header-cta {
  margin: 0;
  flex-shrink: 0;
}

.header-cta a {
  display: inline-block;
  padding: 8px 20px;
  background-color: #E8792A;
  color: #FFFFFF;
  font-size: 15px;
  font-weight: 600;
  border-radius: 6px;
  transition: background-color 0.2s ease;
}

.header-cta a:hover {
  background-color: #d96a1a;
  color: #FFFFFF;
}

/* 首页 hero */
.hero-section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 64px 24px 48px;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}

.hero-content h1 {
  font-size: 36px;
  line-height: 1.3;
  margin-bottom: 16px;
}

.hero-subtitle {
  font-size: 18px;
  font-weight: 600;
  color: #E8792A;
  margin-bottom: 12px;
}

.hero-description {
  font-size: 16px;
  color: #5A6B7A;
  margin-bottom: 28px;
  max-width: 520px;
}

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

.btn-primary,
.btn-secondary {
  display: inline-block;
  padding: 12px 28px;
  font-size: 16px;
  font-weight: 600;
  border-radius: 6px;
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.btn-primary {
  background-color: #E8792A;
  color: #FFFFFF;
}

.btn-primary:hover {
  background-color: #d96a1a;
  color: #FFFFFF;
}

.btn-secondary {
  background-color: transparent;
  color: #16324F;
  border: 1px solid #16324F;
}

.btn-secondary:hover {
  background-color: #16324F;
  color: #FFFFFF;
}

.hero-visual {
  width: 100%;
}

.hero-visual img {
  width: 100%;
  height: auto;
  border-radius: 8px;
}

/* 首页内容区块通用 */
.service-matrix-section,
.process-preview-section,
.category-preview-section,
.faq-preview-section,
.related-tasks-section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 48px 24px;
}

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

.section-header h2 {
  font-size: 26px;
  margin-bottom: 8px;
}

.section-header p {
  font-size: 16px;
  color: #5A6B7A;
  max-width: 640px;
}

/* 首页服务矩阵 */
.service-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.service-card {
  background-color: #FFFFFF;
  border: 1px solid #DDE3E9;
  border-radius: 8px;
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  transition: box-shadow 0.25s ease, transform 0.25s ease;
}

.service-card:hover {
  box-shadow: 0 6px 20px rgba(22, 50, 79, 0.12);
  transform: translateY(-2px);
}

.service-card h3 {
  font-size: 18px;
  margin-bottom: 10px;
}

.service-scene {
  font-size: 14px;
  color: #5A6B7A;
  margin-bottom: 8px;
}

.service-deliverable {
  font-size: 14px;
  color: #16324F;
  margin-bottom: 16px;
  padding-top: 8px;
  border-top: 1px solid #F0F2F4;
}

.service-card a {
  margin-top: auto;
  font-size: 14px;
  font-weight: 600;
  color: #E8792A;
  display: inline-block;
}

.service-card a:hover {
  color: #d96a1a;
}

/* 首页流程预览 */
.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.step-item {
  background-color: #FFFFFF;
  border: 1px solid #DDE3E9;
  border-radius: 8px;
  padding: 24px 20px;
  position: relative;
  transition: box-shadow 0.25s ease;
}

.step-item:hover {
  box-shadow: 0 6px 20px rgba(22, 50, 79, 0.12);
}

.step-number {
  display: inline-block;
  font-size: 14px;
  font-weight: 600;
  color: #FFFFFF;
  background-color: #16324F;
  border-radius: 50%;
  width: 32px;
  height: 32px;
  line-height: 32px;
  text-align: center;
  margin-bottom: 12px;
}

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

.step-item p {
  font-size: 14px;
  color: #5A6B7A;
  margin-bottom: 12px;
}

.step-item a {
  font-size: 14px;
  font-weight: 600;
  color: #E8792A;
}

.step-item a:hover {
  color: #d96a1a;
}

/* 首页问题分类预览 */
.category-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.category-card {
  background-color: #FFFFFF;
  border: 1px solid #DDE3E9;
  border-radius: 8px;
  padding: 24px;
  transition: box-shadow 0.25s ease;
}

.category-card:hover {
  box-shadow: 0 6px 20px rgba(22, 50, 79, 0.12);
}

.category-card h3 {
  font-size: 18px;
  margin-bottom: 10px;
}

.category-scene {
  font-size: 14px;
  color: #5A6B7A;
  margin-bottom: 16px;
}

.category-card a {
  font-size: 14px;
  font-weight: 600;
  color: #E8792A;
}

.category-card a:hover {
  color: #d96a1a;
}

/* 首页 FAQ 预览 */
.faq-preview-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 20px;
}

.faq-preview-list details {
  background-color: #FFFFFF;
  border: 1px solid #DDE3E9;
  border-radius: 8px;
  padding: 16px 20px;
}

.faq-preview-list summary {
  font-size: 16px;
  font-weight: 600;
  color: #1C2B36;
  cursor: pointer;
  outline: none;
}

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

.faq-preview-list summary::before {
  content: "＋";
  display: inline-block;
  margin-right: 10px;
  color: #E8792A;
  font-weight: 600;
}

.faq-preview-list details[open] summary::before {
  content: "－";
}

.faq-preview-list details p {
  margin: 12px 0 0;
  padding-left: 26px;
  font-size: 15px;
  color: #5A6B7A;
}

.faq-more-link {
  text-align: right;
}

.faq-more-link a {
  font-size: 15px;
  font-weight: 600;
  color: #E8792A;
}

.faq-more-link a:hover {
  color: #d96a1a;
}

/* 首页资料提示条 */
.resources-callout {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px;
  background-color: #16324F;
  border-radius: 8px;
  display: flex;
  align-items: center;
  gap: 20px;
  color: #FFFFFF;
}

.callout-icon {
  font-size: 28px;
  margin: 0;
  flex-shrink: 0;
}

.callout-content {
  flex: 1;
}

.callout-content h2 {
  font-size: 18px;
  color: #FFFFFF;
  margin-bottom: 4px;
}

.callout-content p {
  font-size: 14px;
  color: #DDE3E9;
  margin: 0;
}

.callout-link {
  display: inline-block;
  padding: 10px 24px;
  background-color: #E8792A;
  color: #FFFFFF;
  font-size: 15px;
  font-weight: 600;
  border-radius: 6px;
  white-space: nowrap;
  transition: background-color 0.2s ease;
}

.callout-link:hover {
  background-color: #d96a1a;
  color: #FFFFFF;
}

/* 首页相关任务带 */
.related-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.related-card {
  display: block;
  background-color: #FFFFFF;
  border: 1px solid #DDE3E9;
  border-radius: 8px;
  padding: 24px;
  transition: box-shadow 0.25s ease, transform 0.25s ease;
}

.related-card:hover {
  box-shadow: 0 6px 20px rgba(22, 50, 79, 0.12);
  transform: translateY(-2px);
}

.related-card h3 {
  font-size: 17px;
  margin-bottom: 8px;
  color: #16324F;
}

.related-card p {
  font-size: 14px;
  color: #5A6B7A;
  margin: 0;
}

/* 首页内容媒体 */
.content-media {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px 16px;
}

.content-media img {
  width: 100%;
  height: auto;
  border-radius: 8px;
}

.content-media figcaption {
  font-size: 13px;
  color: #5A6B7A;
  padding: 10px 0 0;
  text-align: center;
}

/* ============================================================
   内页通用
   ============================================================ */
.inner-main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px 48px;
  width: 100%;
}

.breadcrumb {
  padding: 24px 0 8px;
  font-size: 14px;
  color: #5A6B7A;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.breadcrumb a {
  color: #16324F;
}

.breadcrumb a:hover {
  color: #E8792A;
}

.breadcrumb-current {
  color: #5A6B7A;
  font-weight: 600;
}

.page-header {
  padding: 12px 0 24px;
}

.page-title {
  font-size: 32px;
  margin: 0;
}

/* 内页标题区 */
.page-title-area {
  padding: 12px 0 24px;
}

.page-title-area p {
  font-size: 16px;
  color: #5A6B7A;
  max-width: 720px;
}

.page-title-block {
  padding: 12px 0 24px;
}

.page-title-block p {
  font-size: 16px;
  color: #5A6B7A;
  max-width: 720px;
}

.page-title-text p {
  font-size: 16px;
  color: #5A6B7A;
  max-width: 720px;
}

/* 内页布局壳 */
.layout-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 32px;
  align-items: start;
}

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

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

/* ============================================================
   service-policy 页
   ============================================================ */
.page-title-media {
  margin-bottom: 20px;
}

.page-title-media img {
  width: 100%;
  max-height: 240px;
  object-fit: cover;
  border-radius: 8px;
}

.policy-section {
  background-color: #FFFFFF;
  border: 1px solid #DDE3E9;
  border-radius: 8px;
  padding: 32px;
  margin-bottom: 24px;
}

.policy-section h2 {
  font-size: 22px;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 2px solid #F0F2F4;
}

.policy-section p {
  font-size: 15px;
  color: #5A6B7A;
  max-width: 760px;
}

.policy-section ul {
  margin: 16px 0;
}

.policy-section li {
  font-size: 15px;
  color: #5A6B7A;
  padding: 8px 0 8px 20px;
  position: relative;
  max-width: 760px;
}

.policy-section li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 17px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: #E8792A;
}

/* ============================================================
   issue-categories 页
   ============================================================ */
.title-figure {
  margin-bottom: 24px;
}

.title-figure img {
  width: 100%;
  max-height: 260px;
  object-fit: cover;
  border-radius: 8px;
}

.category-index,
.category-details,
.selection-guide {
  background-color: #FFFFFF;
  border: 1px solid #DDE3E9;
  border-radius: 8px;
  padding: 32px;
  margin-bottom: 24px;
}

.category-index h2,
.category-details h2,
.selection-guide h2 {
  font-size: 22px;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 2px solid #F0F2F4;
}

.category-card-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.category-card-grid .category-card {
  display: flex;
  flex-direction: column;
}

.category-card-grid .category-card a {
  margin-top: auto;
}

.category-detail-item {
  padding: 24px 0;
  border-bottom: 1px solid #F0F2F4;
}

.category-detail-item:last-child {
  border-bottom: none;
}

.category-detail-item h3 {
  font-size: 18px;
  margin-bottom: 12px;
}

.category-detail-item p {
  font-size: 15px;
  color: #5A6B7A;
  margin-bottom: 12px;
  max-width: 760px;
}

.category-detail-item strong {
  color: #16324F;
}

.selection-guide p {
  font-size: 15px;
  color: #5A6B7A;
  max-width: 760px;
}

/* ============================================================
   process 页
   ============================================================ */
.process-overview {
  background-color: #FFFFFF;
  border: 1px solid #DDE3E9;
  border-radius: 8px;
  padding: 32px;
  margin-bottom: 24px;
}

.process-overview h2 {
  font-size: 22px;
  margin-bottom: 16px;
}

.process-overview p {
  font-size: 15px;
  color: #5A6B7A;
  max-width: 760px;
}

.process-figure {
  margin-top: 20px;
}

.process-figure img {
  width: 100%;
  height: auto;
  border-radius: 8px;
}

.process-figure figcaption {
  font-size: 13px;
  color: #5A6B7A;
  padding-top: 8px;
  text-align: center;
}

.process-steps {
  background-color: #FFFFFF;
  border: 1px solid #DDE3E9;
  border-radius: 8px;
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.process-steps h2 {
  font-size: 22px;
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 2px solid #F0F2F4;
}

.process-steps .step-item {
  display: flex;
  gap: 20px;
  padding: 20px 0;
  border-bottom: 1px solid #F0F2F4;
  border-radius: 0;
  background-color: transparent;
  border-left: none;
  border-right: none;
  border-top: none;
  box-shadow: none;
}

.process-steps .step-item:last-child {
  border-bottom: none;
}

.process-steps .step-number {
  flex-shrink: 0;
  margin-top: 4px;
}

.process-steps .step-content {
  flex: 1;
}

.process-steps .step-content h3 {
  font-size: 18px;
  margin-bottom: 8px;
}

.process-steps .step-content p {
  font-size: 15px;
  color: #5A6B7A;
  margin-bottom: 8px;
  max-width: 680px;
}

/* 侧栏 */
.sidebar-area {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.sidebar-block {
  background-color: #FFFFFF;
  border: 1px solid #DDE3E9;
  border-radius: 8px;
  padding: 24px;
}

.sidebar-block h2 {
  font-size: 18px;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid #F0F2F4;
}

.check-list li {
  font-size: 14px;
  color: #5A6B7A;
  padding: 6px 0 6px 22px;
  position: relative;
}

.check-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: #E8792A;
  font-weight: 600;
}

.sidebar-link {
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px solid #F0F2F4;
}

.sidebar-link a {
  font-size: 14px;
  font-weight: 600;
  color: #E8792A;
}

.sidebar-link a:hover {
  color: #d96a1a;
}

/* ============================================================
   resources 页
   ============================================================ */
.checklist-section,
.template-section {
  background-color: #FFFFFF;
  border: 1px solid #DDE3E9;
  border-radius: 8px;
  padding: 32px;
  margin-bottom: 24px;
}

.checklist-section h2,
.template-section h2 {
  font-size: 22px;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 2px solid #F0F2F4;
}

.checklist-section > p,
.template-section > p {
  font-size: 15px;
  color: #5A6B7A;
  max-width: 760px;
}

.checklist li {
  padding: 16px 0;
  border-bottom: 1px solid #F0F2F4;
}

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

.checklist h3 {
  font-size: 17px;
  margin-bottom: 6px;
}

.checklist p {
  font-size: 14px;
  color: #5A6B7A;
  margin: 0;
}

.report-structure {
  counter-reset: report-item;
}

.report-structure li {
  padding: 16px 0;
  border-bottom: 1px solid #F0F2F4;
  counter-increment: report-item;
  position: relative;
  padding-left: 40px;
}

.report-structure li::before {
  content: counter(report-item);
  position: absolute;
  left: 0;
  top: 18px;
  width: 28px;
  height: 28px;
  line-height: 28px;
  text-align: center;
  background-color: #16324F;
  color: #FFFFFF;
  border-radius: 50%;
  font-size: 13px;
  font-weight: 600;
}

.report-structure li:last-child {
  border-bottom: none;
}

.report-structure h3 {
  font-size: 16px;
  margin-bottom: 6px;
}

.report-structure p {
  font-size: 14px;
  color: #5A6B7A;
  margin: 0;
}

.aside-sidebar {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.aside-block {
  background-color: #FFFFFF;
  border: 1px solid #DDE3E9;
  border-radius: 8px;
  padding: 24px;
}

.aside-block h2 {
  font-size: 18px;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid #F0F2F4;
}

.tips-list li {
  font-size: 14px;
  color: #5A6B7A;
  padding: 6px 0 6px 18px;
  position: relative;
}

.tips-list li::before {
  content: "·";
  position: absolute;
  left: 0;
  color: #E8792A;
  font-weight: 600;
  font-size: 18px;
}

.media-figure {
  margin: 24px 0;
}

.media-figure img {
  width: 100%;
  height: auto;
  border-radius: 8px;
}

.media-figure figcaption {
  font-size: 13px;
  color: #5A6B7A;
  padding-top: 8px;
  text-align: center;
}

/* ============================================================
   progress 页
   ============================================================ */
.timeline-section {
  background-color: #FFFFFF;
  border: 1px solid #DDE3E9;
  border-radius: 8px;
  padding: 32px;
  margin-bottom: 24px;
}

.timeline-section h2 {
  font-size: 22px;
  margin-bottom: 16px;
}

.timeline-section p {
  font-size: 15px;
  color: #5A6B7A;
  max-width: 760px;
}

.timeline-wrap {
  margin-top: 20px;
}

.timeline-figure img {
  width: 100%;
  height: auto;
  border-radius: 8px;
}

.timeline-figure figcaption {
  font-size: 13px;
  color: #5A6B7A;
  padding-top: 8px;
  text-align: center;
}

.timeline-detail {
  background-color: #FFFFFF;
  border: 1px solid #DDE3E9;
  border-radius: 8px;
  padding: 32px;
  margin-bottom: 24px;
}

.timeline-detail h2 {
  font-size: 22px;
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 2px solid #F0F2F4;
}

.timeline-list {
  position: relative;
  padding-left: 28px;
}

.timeline-list::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background-color: #DDE3E9;
}

.timeline-item {
  position: relative;
  padding: 0 0 28px;
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: -28px;
  top: 6px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background-color: #FFFFFF;
  border: 3px solid #16324F;
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-item h3 {
  font-size: 18px;
  margin-bottom: 6px;
}

.timeline-meta {
  font-size: 13px;
  font-weight: 600;
  color: #E8792A;
  margin-bottom: 8px;
}

.timeline-item p {
  font-size: 15px;
  color: #5A6B7A;
  margin-bottom: 8px;
  max-width: 680px;
}

.timeline-output {
  font-size: 14px;
  background-color: #F6F7F9;
  border-radius: 6px;
  padding: 10px 14px;
  margin-top: 8px;
  display: inline-block;
}

.confirm-section {
  background-color: #FFFFFF;
  border: 1px solid #DDE3E9;
  border-radius: 8px;
  padding: 32px;
  margin-bottom: 24px;
}

.confirm-section h2 {
  font-size: 22px;
  margin-bottom: 16px;
}

.confirm-section p {
  font-size: 15px;
  color: #5A6B7A;
  max-width: 760px;
}

.sidebar-aside {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.side-block {
  background-color: #FFFFFF;
  border: 1px solid #DDE3E9;
  border-radius: 8px;
  padding: 24px;
}

.side-block h2 {
  font-size: 18px;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid #F0F2F4;
}

.side-list li {
  font-size: 14px;
  color: #5A6B7A;
  padding: 6px 0 6px 22px;
  position: relative;
}

.side-list li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: #E8792A;
  font-weight: 600;
}

/* ============================================================
   faq 页
   ============================================================ */
.page-title-content p {
  font-size: 16px;
  color: #5A6B7A;
  max-width: 720px;
}

.page-title-figure {
  margin: 20px 0 24px;
}

.page-title-figure img {
  width: 100%;
  max-height: 260px;
  object-fit: cover;
  border-radius: 8px;
}

.faq-group {
  background-color: #FFFFFF;
  border: 1px solid #DDE3E9;
  border-radius: 8px;
  padding: 32px;
  margin-bottom: 24px;
}

.faq-group h2 {
  font-size: 22px;
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 2px solid #F0F2F4;
}

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

.faq-item {
  border: 1px solid #F0F2F4;
  border-radius: 6px;
  padding: 0;
  background-color: #F6F7F9;
}

.faq-item summary {
  font-size: 16px;
  font-weight: 600;
  color: #1C2B36;
  cursor: pointer;
  padding: 16px 20px;
  list-style: none;
  outline: none;
  display: flex;
  align-items: center;
  gap: 10px;
}

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

.faq-item summary::before {
  content: "＋";
  color: #E8792A;
  font-weight: 600;
  font-size: 18px;
  flex-shrink: 0;
}

.faq-item[open] summary::before {
  content: "－";
}

.faq-answer {
  padding: 0 20px 16px 48px;
}

.faq-answer p {
  font-size: 15px;
  color: #5A6B7A;
  margin: 0;
  max-width: 720px;
}

/* ============================================================
   相关任务带（内页通用）
   ============================================================ */
.related-tasks {
  margin-top: 40px;
}

.related-tasks h2 {
  font-size: 20px;
  margin-bottom: 20px;
  padding-bottom: 10px;
  border-bottom: 2px solid #DDE3E9;
}

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

.related-task-card {
  display: block;
  background-color: #FFFFFF;
  border: 1px solid #DDE3E9;
  border-radius: 8px;
  padding: 20px;
  transition: box-shadow 0.25s ease, transform 0.25s ease;
}

.related-task-card:hover {
  box-shadow: 0 6px 20px rgba(22, 50, 79, 0.12);
  transform: translateY(-2px);
}

.task-label {
  display: block;
  font-size: 16px;
  font-weight: 600;
  color: #16324F;
  margin-bottom: 6px;
}

.task-desc {
  display: block;
  font-size: 13px;
  color: #5A6B7A;
  line-height: 1.5;
}

/* issue-categories 页相关任务带（列表形式） */
.related-links {
  background-color: #FFFFFF;
  border: 1px solid #DDE3E9;
  border-radius: 8px;
  padding: 24px;
  margin-top: 24px;
}

.related-links h2 {
  font-size: 18px;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid #F0F2F4;
}

.related-links li {
  padding: 6px 0;
}

.related-links a {
  font-size: 15px;
  color: #16324F;
  display: inline-block;
  padding: 4px 0;
}

.related-links a:hover {
  color: #E8792A;
}

/* faq 页底部相关链接 */
.related-tasks-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.related-tasks-grid .related-task-card h3 {
  font-size: 16px;
  margin-bottom: 6px;
}

.related-tasks-grid .related-task-card p {
  font-size: 13px;
  color: #5A6B7A;
  margin: 0;
}

.related-links {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 16px;
  padding: 16px 0;
  background-color: transparent;
  border: none;
  border-radius: 0;
}

.related-links-label {
  font-size: 14px;
  color: #5A6B7A;
  font-weight: 600;
}

.related-links-item {
  font-size: 14px;
  color: #16324F;
  padding: 6px 12px;
  background-color: #FFFFFF;
  border: 1px solid #DDE3E9;
  border-radius: 6px;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.related-links-item:hover {
  background-color: #16324F;
  color: #FFFFFF;
}

/* process/progress/resources 页相关任务带 */
.task-cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.task-card {
  display: block;
  background-color: #FFFFFF;
  border: 1px solid #DDE3E9;
  border-radius: 8px;
  padding: 20px;
  transition: box-shadow 0.25s ease, transform 0.25s ease;
}

.task-card:hover {
  box-shadow: 0 6px 20px rgba(22, 50, 79, 0.12);
  transform: translateY(-2px);
}

.task-card h3 {
  font-size: 16px;
  margin-bottom: 6px;
  color: #16324F;
}

.task-card p {
  font-size: 13px;
  color: #5A6B7A;
  margin: 0;
}

/* ============================================================
   404 页
   ============================================================ */
.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 80px 24px;
}

.error-panel {
  text-align: center;
  max-width: 560px;
  background-color: #FFFFFF;
  border: 1px solid #DDE3E9;
  border-radius: 8px;
  padding: 48px;
}

.error-code {
  font-size: 72px;
  font-weight: 600;
  color: #16324F;
  margin: 0 0 12px;
  line-height: 1;
}

.error-panel h1 {
  font-size: 24px;
  margin-bottom: 16px;
}

.error-panel p {
  font-size: 15px;
  color: #5A6B7A;
  margin-bottom: 12px;
}

/* ============================================================
   页脚
   ============================================================ */
.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 48px 24px 24px;
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr 1fr;
  gap: 40px;
}

.footer-brand .footer-logo {
  font-size: 20px;
  font-weight: 600;
  color: #FFFFFF;
  margin-bottom: 12px;
  padding: 0;
  background: none;
  border-radius: 0;
  text-align: left;
}

.footer-brand p {
  font-size: 14px;
  color: #DDE3E9;
  line-height: 1.6;
  margin: 0;
  max-width: 320px;
}

.footer-nav h3,
.footer-service h3,
.footer-compliance h3 {
  font-size: 16px;
  color: #FFFFFF;
  margin-bottom: 16px;
}

.footer-nav li {
  padding: 4px 0;
}

.footer-nav a {
  font-size: 14px;
  color: #DDE3E9;
  transition: color 0.2s ease;
}

.footer-nav a:hover {
  color: #E8792A;
}

.footer-service p {
  font-size: 14px;
  color: #DDE3E9;
  margin-bottom: 12px;
}

.footer-service li {
  font-size: 14px;
  color: #DDE3E9;
  padding: 4px 0 4px 16px;
  position: relative;
}

.footer-service li::before {
  content: "·";
  position: absolute;
  left: 0;
  color: #E8792A;
  font-weight: 600;
}

.footer-compliance p {
  font-size: 13px;
  color: #9AA8B4;
  line-height: 1.6;
  margin: 0 0 8px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 20px 24px;
  text-align: center;
}

.footer-bottom p {
  font-size: 13px;
  color: #9AA8B4;
  margin: 0;
  max-width: 1200px;
  margin: 0 auto;
}

/* ============================================================
   工具类
   ============================================================ */
.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;
}

/* ============================================================
   responsive
   ============================================================ */
@media (max-width: 1024px) {
  .header-inner {
    padding: 12px 20px;
    gap: 16px;
  }

  .main-nav a {
    padding: 8px 10px;
    font-size: 14px;
  }

  .hero-section {
    padding: 48px 20px 40px;
    gap: 32px;
  }

  .hero-content h1 {
    font-size: 30px;
  }

  .service-matrix-section,
  .process-preview-section,
  .category-preview-section,
  .faq-preview-section,
  .related-tasks-section {
    padding: 40px 20px;
  }

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

  .process-steps {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

  .resources-callout {
    margin: 0 20px;
    flex-wrap: wrap;
  }

  .layout-shell {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .sidebar-area,
  .sidebar-aside,
  .aside-sidebar {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .related-task-list,
  .task-cards,
  .related-tasks-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-inner {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
    padding: 40px 20px 20px;
  }
}

@media (max-width: 768px) {
  .header-inner {
    flex-wrap: wrap;
    padding: 12px 16px;
  }

  .main-nav {
    order: 3;
    width: 100%;
  }

  .main-nav ul {
    flex-wrap: nowrap;
    overflow-x: auto;
    padding-bottom: 4px;
    -webkit-overflow-scrolling: touch;
  }

  .main-nav a {
    padding: 6px 10px;
    font-size: 14px;
    white-space: nowrap;
  }

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

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

  .hero-content {
    order: 1;
  }

  .hero-visual {
    order: 2;
  }

  .hero-content h1 {
    font-size: 28px;
  }

  .service-matrix-section,
  .process-preview-section,
  .category-preview-section,
  .faq-preview-section,
  .related-tasks-section {
    padding: 32px 16px;
  }

  .service-grid,
  .process-steps,
  .category-grid,
  .related-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .resources-callout {
    margin: 0 16px;
    flex-direction: column;
    align-items: flex-start;
    padding: 20px;
  }

  .callout-link {
    width: 100%;
    text-align: center;
  }

  .content-media {
    padding: 0 16px 12px;
  }

  .inner-main {
    padding: 0 16px 40px;
  }

  .breadcrumb {
    padding: 16px 0 8px;
  }

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

  .policy-section,
  .category-index,
  .category-details,
  .selection-guide,
  .process-overview,
  .process-steps,
  .timeline-section,
  .timeline-detail,
  .confirm-section,
  .checklist-section,
  .template-section,
  .faq-group {
    padding: 24px 20px;
  }

  .category-card-grid {
    grid-template-columns: 1fr;
  }

  .sidebar-area,
  .sidebar-aside,
  .aside-sidebar {
    grid-template-columns: 1fr;
  }

  .related-task-list,
  .task-cards,
  .related-tasks-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

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

  .footer-bottom {
    padding: 16px;
  }

  .error-panel {
    padding: 32px 24px;
  }

  .error-code {
    font-size: 52px;
  }
}

@media (max-width: 480px) {
  .header-inner {
    padding: 10px 12px;
    gap: 12px;
  }

  .brand-logo a {
    font-size: 18px;
  }

  .header-cta a {
    padding: 6px 14px;
    font-size: 14px;
  }

  .main-nav a {
    font-size: 13px;
    padding: 6px 8px;
  }

  .hero-section {
    padding: 32px 12px 28px;
  }

  .hero-content h1 {
    font-size: 24px;
  }

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

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

  .hero-actions {
    flex-direction: column;
    gap: 12px;
  }

  .btn-primary,
  .btn-secondary {
    width: 100%;
    text-align: center;
  }

  .service-matrix-section,
  .process-preview-section,
  .category-preview-section,
  .faq-preview-section,
  .related-tasks-section {
    padding: 28px 12px;
  }

  .section-header h2 {
    font-size: 22px;
  }

  .service-card,
  .category-card,
  .step-item,
  .related-card {
    padding: 20px 16px;
  }

  .resources-callout {
    margin: 0 12px;
    padding: 16px;
  }

  .inner-main {
    padding: 0 12px 32px;
  }

  .breadcrumb {
    font-size: 13px;
  }

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

  .policy-section,
  .category-index,
  .category-details,
  .selection-guide,
  .process-overview,
  .process-steps,
  .timeline-section,
  .timeline-detail,
  .confirm-section,
  .checklist-section,
  .template-section,
  .faq-group {
    padding: 20px 16px;
  }

  .policy-section h2,
  .category-index h2,
  .category-details h2,
  .selection-guide h2,
  .process-overview h2,
  .process-steps h2,
  .timeline-section h2,
  .timeline-detail h2,
  .confirm-section h2,
  .checklist-section h2,
  .template-section h2,
  .faq-group h2 {
    font-size: 20px;
  }

  .process-steps .step-item {
    flex-direction: column;
    gap: 12px;
  }

  .process-steps .step-number {
    margin-top: 0;
  }

  .timeline-list {
    padding-left: 20px;
  }

  .timeline-item::before {
    left: -20px;
    width: 14px;
    height: 14px;
  }

  .faq-item summary {
    font-size: 15px;
    padding: 14px 16px;
  }

  .faq-answer {
    padding: 0 16px 14px 40px;
  }

  .error-main {
    padding: 48px 12px;
  }

  .error-panel {
    padding: 24px 16px;
  }

  .error-code {
    font-size: 44px;
  }
}