/* ============================================================
   base / reset
   ============================================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: #2b2d42;
  background-color: #faf7f2;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: #3a7ca5;
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: #1f3a5f;
}

ul, ol {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.35;
  color: #1f3a5f;
}

.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;
}

/* ============================================================
   layout / shell
   ============================================================ */
.site-header {
  background-color: #1f3a5f;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 8px rgba(31, 58, 95, 0.18);
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 68px;
  gap: 24px;
}

.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background-color: #e76f51;
  color: #ffffff;
  font-weight: 700;
  font-size: 15px;
  border-radius: 6px;
  letter-spacing: 0.02em;
}

.site-nav {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: flex-end;
}

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

.nav-item {
  position: relative;
}

.nav-link {
  display: inline-block;
  padding: 8px 14px;
  font-size: 15px;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.88);
  border-radius: 4px;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.nav-link:hover {
  color: #ffffff;
  background-color: rgba(255, 255, 255, 0.1);
}

.nav-link.is-current {
  color: #ffffff;
  background-color: rgba(255, 255, 255, 0.16);
  font-weight: 600;
}

.header-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 22px;
  background-color: #e76f51;
  color: #ffffff;
  font-size: 15px;
  font-weight: 600;
  border-radius: 6px;
  white-space: nowrap;
  transition: background-color 0.2s ease;
}

.header-cta:hover {
  background-color: #d95f42;
  color: #ffffff;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  flex-direction: column;
  gap: 5px;
}

.nav-toggle-line {
  display: block;
  width: 24px;
  height: 2px;
  background-color: #ffffff;
  border-radius: 2px;
}

.site-main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.home-main {
  padding-top: 0;
}

.inner-main {
  padding-top: 32px;
  padding-bottom: 64px;
}

.breadcrumb {
  font-size: 14px;
  color: #8d99ae;
  padding: 8px 0 16px;
}

.breadcrumb a {
  color: #3a7ca5;
}

.breadcrumb a:hover {
  color: #1f3a5f;
}

.breadcrumb-sep {
  margin: 0 8px;
  color: #8d99ae;
}

.breadcrumb-current {
  color: #2b2d42;
  font-weight: 500;
}

.page-header {
  padding: 24px 0 32px;
}

.page-title {
  font-size: 32px;
  font-weight: 700;
  color: #1f3a5f;
  line-height: 1.3;
  margin-bottom: 12px;
}

.page-description {
  font-size: 16px;
  color: #5a6270;
  max-width: 780px;
  line-height: 1.7;
}

.site-footer {
  background-color: #1f3a5f;
  color: rgba(255, 255, 255, 0.8);
  margin-top: 0;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 48px 24px 24px;
  display: grid;
  grid-template-columns: 1.4fr 2.6fr;
  gap: 40px;
}

.footer-brand {
  padding-right: 24px;
}

.footer-logo {
  font-size: 20px;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 12px;
}

.footer-desc {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.7);
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.link-column h3 {
  font-size: 15px;
  font-weight: 600;
  color: #ffffff;
  margin-bottom: 14px;
}

.link-column ul li {
  margin-bottom: 8px;
}

.link-column ul a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
  transition: color 0.2s ease;
}

.link-column ul a:hover {
  color: #ffffff;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding: 16px 24px;
  text-align: center;
}

.footer-bottom p {
  max-width: 1200px;
  margin: 0 auto;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.55);
}

/* ============================================================
   components / shared
   ============================================================ */
.section-title {
  font-size: 26px;
  font-weight: 700;
  color: #1f3a5f;
  margin-bottom: 12px;
}

.section-desc {
  font-size: 15px;
  color: #5a6270;
  line-height: 1.7;
  max-width: 720px;
}

.section-intro {
  font-size: 15px;
  color: #5a6270;
  line-height: 1.7;
  max-width: 760px;
  margin-bottom: 28px;
}

.section-lead {
  font-size: 15px;
  color: #5a6270;
  line-height: 1.7;
  max-width: 760px;
  margin-bottom: 28px;
}

.section-more {
  text-align: center;
  margin-top: 32px;
}

.section-more a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 15px;
  font-weight: 600;
  color: #3a7ca5;
  padding: 10px 24px;
  border: 1px solid #3a7ca5;
  border-radius: 6px;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.section-more a:hover {
  background-color: #3a7ca5;
  color: #ffffff;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  background-color: #e76f51;
  color: #ffffff;
  font-size: 16px;
  font-weight: 600;
  border-radius: 6px;
  transition: background-color 0.2s ease;
}

.btn-primary:hover {
  background-color: #d95f42;
  color: #ffffff;
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  background-color: transparent;
  color: #1f3a5f;
  font-size: 16px;
  font-weight: 600;
  border: 1px solid #1f3a5f;
  border-radius: 6px;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.btn-secondary:hover {
  background-color: #1f3a5f;
  color: #ffffff;
}

.table-wrapper {
  overflow-x: auto;
  border-radius: 6px;
  border: 1px solid #d9d2c5;
  background-color: #ffffff;
}

.parameter-table,
.scenario-service-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 15px;
}

.parameter-table th,
.parameter-table td,
.scenario-service-table th,
.scenario-service-table td {
  padding: 14px 16px;
  text-align: left;
  border-bottom: 1px solid #e8e3d8;
  vertical-align: top;
}

.parameter-table thead th,
.scenario-service-table thead th {
  background-color: #f0ece3;
  font-weight: 600;
  color: #1f3a5f;
  white-space: nowrap;
}

.parameter-table tbody tr:last-child td,
.scenario-service-table tbody tr:last-child td {
  border-bottom: none;
}

.parameter-table tbody tr:hover,
.scenario-service-table tbody tr:hover {
  background-color: #faf8f3;
}

.related-links {
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid #d9d2c5;
}

.related-links .section-title {
  font-size: 22px;
}

.link-card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 20px;
}

.link-card {
  display: block;
  padding: 20px;
  background-color: #ffffff;
  border: 1px solid #d9d2c5;
  border-radius: 6px;
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.link-card:hover {
  box-shadow: 0 4px 16px rgba(31, 58, 95, 0.1);
  transform: translateY(-2px);
}

.link-title {
  font-size: 16px;
  font-weight: 600;
  color: #1f3a5f;
  margin-bottom: 6px;
}

.link-card p {
  font-size: 14px;
  color: #5a6270;
  line-height: 1.6;
}

/* filter buttons */
.filter-group,
.filter-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 28px;
}

.filter-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 22px;
  font-size: 15px;
  font-weight: 500;
  color: #2b2d42;
  background-color: #ffffff;
  border: 1px solid #d9d2c5;
  border-radius: 6px;
  cursor: pointer;
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
  min-height: 44px;
}

.filter-btn:hover {
  border-color: #3a7ca5;
  color: #3a7ca5;
}

.filter-btn.is-active {
  background-color: #e76f51;
  border-color: #e76f51;
  color: #ffffff;
}

/* accordion */
.accordion-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.accordion-item {
  background-color: #ffffff;
  border: 1px solid #d9d2c5;
  border-radius: 6px;
  overflow: hidden;
}

.accordion-item summary {
  padding: 16px 20px;
  font-size: 15px;
  font-weight: 600;
  color: #1f3a5f;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  transition: background-color 0.2s ease;
}

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

.accordion-item summary::after {
  content: "+";
  font-size: 20px;
  font-weight: 400;
  color: #8d99ae;
  flex-shrink: 0;
  transition: transform 0.2s ease;
}

.accordion-item[open] summary::after {
  content: "−";
}

.accordion-item summary:hover {
  background-color: #faf8f3;
}

.accordion-item > p {
  padding: 0 20px 16px;
  font-size: 15px;
  color: #4a5260;
  line-height: 1.7;
}

/* ============================================================
   components / index page
   ============================================================ */
.hero-section {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 48px;
  align-items: center;
  padding: 56px 0 48px;
}

.hero-copy {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 20px;
}

.hero-title {
  font-size: 36px;
  font-weight: 700;
  color: #1f3a5f;
  line-height: 1.3;
}

.hero-lead {
  font-size: 17px;
  color: #5a6270;
  line-height: 1.7;
  max-width: 480px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 8px;
}

.hero-media {
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 8px 24px rgba(31, 58, 95, 0.15);
}

.hero-media img {
  width: 100%;
  height: 360px;
  object-fit: cover;
}

.brand-strip {
  background-color: #f0ece3;
  border: 1px solid #d9d2c5;
  border-radius: 8px;
  padding: 28px 32px;
  margin-bottom: 48px;
}

.brand-strip .section-title {
  font-size: 20px;
  margin-bottom: 16px;
}

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

.strip-item {
  font-size: 14px;
  color: #4a5260;
  line-height: 1.7;
  padding-left: 16px;
  border-left: 3px solid #e76f51;
}

.services-section {
  padding: 48px 0;
}

.services-section .section-head,
.evidence-chain .section-head,
.scenarios-preview .section-head,
.cooperate-steps .section-head,
.faq-preview .section-head {
  margin-bottom: 28px;
}

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

.service-card {
  display: flex;
  flex-direction: column;
  background-color: #ffffff;
  border: 1px solid #d9d2c5;
  border-radius: 6px;
  overflow: hidden;
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.service-card:hover {
  box-shadow: 0 6px 20px rgba(31, 58, 95, 0.12);
  transform: translateY(-3px);
}

.service-card .card-media {
  width: 100%;
  overflow: hidden;
}

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

.service-card .card-title {
  font-size: 18px;
  font-weight: 600;
  color: #1f3a5f;
  padding: 16px 20px 0;
}

.service-card .card-summary {
  font-size: 14px;
  color: #5a6270;
  line-height: 1.6;
  padding: 8px 20px 20px;
}

.evidence-chain {
  padding: 48px 0;
}

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

.chain-item {
  background-color: #ffffff;
  border: 1px solid #d9d2c5;
  border-radius: 6px;
  padding: 24px;
  position: relative;
}

.chain-step {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background-color: #e76f51;
  color: #ffffff;
  font-size: 15px;
  font-weight: 700;
  border-radius: 50%;
  margin-bottom: 14px;
  font-variant-numeric: tabular-nums;
}

.chain-title {
  font-size: 17px;
  font-weight: 600;
  color: #1f3a5f;
  margin-bottom: 8px;
}

.chain-text {
  font-size: 14px;
  color: #5a6270;
  line-height: 1.7;
}

.scenarios-preview {
  padding: 48px 0;
}

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

.scenario-card {
  display: block;
  background-color: #ffffff;
  border: 1px solid #d9d2c5;
  border-radius: 6px;
  overflow: hidden;
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.scenario-card:hover {
  box-shadow: 0 6px 20px rgba(31, 58, 95, 0.12);
  transform: translateY(-3px);
}

.scenario-card .card-media {
  width: 100%;
  overflow: hidden;
}

.scenario-card .card-media img {
  width: 100%;
  height: 180px;
  object-fit: cover;
}

.scenario-card .card-title {
  font-size: 17px;
  font-weight: 600;
  color: #1f3a5f;
  padding: 16px 20px 20px;
}

.cooperate-steps {
  padding: 48px 0;
}

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

.step-item {
  background-color: #ffffff;
  border: 1px solid #d9d2c5;
  border-radius: 6px;
  padding: 24px;
}

.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background-color: #e76f51;
  color: #ffffff;
  font-size: 15px;
  font-weight: 700;
  border-radius: 50%;
  margin-bottom: 12px;
  font-variant-numeric: tabular-nums;
}

.step-title {
  font-size: 17px;
  font-weight: 600;
  color: #1f3a5f;
  margin-bottom: 8px;
}

.step-desc {
  font-size: 14px;
  color: #5a6270;
  line-height: 1.7;
}

.faq-preview {
  padding: 48px 0;
}

.faq-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.faq-link {
  display: block;
  padding: 14px 18px;
  background-color: #ffffff;
  border: 1px solid #d9d2c5;
  border-radius: 6px;
  font-size: 15px;
  color: #2b2d42;
  transition: border-color 0.2s ease, color 0.2s ease, background-color 0.2s ease;
}

.faq-link:hover {
  border-color: #3a7ca5;
  color: #3a7ca5;
  background-color: #faf8f3;
}

.home-main .related-links {
  margin-top: 0;
  padding: 32px 0 48px;
  display: flex;
  align-items: center;
  gap: 16px;
  border-top: 1px solid #d9d2c5;
}

.related-links-label {
  font-size: 14px;
  color: #8d99ae;
  white-space: nowrap;
}

.related-links-item {
  font-size: 14px;
  color: #3a7ca5;
  padding: 6px 4px;
}

.related-links-item:hover {
  color: #1f3a5f;
}

/* ============================================================
   components / service page
   ============================================================ */
.service-filter {
  padding-bottom: 24px;
}

.service-list-section {
  padding-bottom: 48px;
}

.service-list-section .service-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.service-list-section .service-card {
  display: grid;
  grid-template-columns: 240px 1fr;
  overflow: hidden;
}

.service-list-section .card-image {
  width: 100%;
  height: 100%;
  min-height: 200px;
  object-fit: cover;
}

.service-list-section .card-content {
  padding: 20px 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.service-list-section .card-title {
  font-size: 18px;
  font-weight: 600;
  color: #1f3a5f;
  padding: 0;
}

.service-list-section .card-usage {
  font-size: 14px;
  color: #5a6270;
  line-height: 1.6;
}

.service-list-section .content-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-left: 18px;
  list-style: disc;
}

.service-list-section .content-list li {
  font-size: 14px;
  color: #4a5260;
  line-height: 1.6;
}

.service-list-section .delivery-method {
  font-size: 14px;
  color: #4a5260;
  margin-top: auto;
}

.service-list-section .delivery-method strong {
  color: #1f3a5f;
  font-weight: 600;
}

.parameter-section {
  padding-bottom: 48px;
}

/* ============================================================
   components / method page
   ============================================================ */
.method-conclusion {
  padding-bottom: 48px;
}

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

.principle-card {
  background-color: #ffffff;
  border: 1px solid #d9d2c5;
  border-radius: 6px;
  padding: 24px;
}

.principle-card .principle-title {
  font-size: 17px;
  font-weight: 600;
  color: #1f3a5f;
  margin-bottom: 8px;
}

.principle-card p {
  font-size: 14px;
  color: #5a6270;
  line-height: 1.7;
}

.method-framework {
  padding-bottom: 48px;
}

.framework-steps {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
}

.framework-step {
  background-color: #ffffff;
  border: 1px solid #d9d2c5;
  border-radius: 6px;
  padding: 20px;
  text-align: center;
}

.framework-step .step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background-color: #e76f51;
  color: #ffffff;
  font-size: 16px;
  font-weight: 700;
  border-radius: 50%;
  margin-bottom: 12px;
  font-variant-numeric: tabular-nums;
}

.framework-step .step-title {
  font-size: 15px;
  font-weight: 600;
  color: #1f3a5f;
  margin-bottom: 6px;
}

.framework-step p {
  font-size: 13px;
  color: #5a6270;
  line-height: 1.6;
}

.process-detail {
  padding-bottom: 48px;
}

.process-node {
  background-color: #ffffff;
  border: 1px solid #d9d2c5;
  border-radius: 6px;
  margin-bottom: 20px;
  padding: 24px;
}

.process-node .node-title {
  font-size: 18px;
  font-weight: 600;
  color: #1f3a5f;
  margin-bottom: 14px;
}

.node-content {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.node-content p {
  font-size: 15px;
  color: #4a5260;
  line-height: 1.7;
}

.node-content strong {
  color: #1f3a5f;
  font-weight: 600;
  margin-right: 6px;
}

.process-media {
  margin-top: 24px;
  border-radius: 6px;
  overflow: hidden;
}

.process-media .media-img {
  width: 100%;
  height: 260px;
  object-fit: cover;
}

.process-media figcaption {
  padding: 12px 16px;
  font-size: 13px;
  color: #8d99ae;
  background-color: #f0ece3;
}

.result-criteria {
  padding-bottom: 48px;
}

.criteria-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 20px;
}

.criteria-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  background-color: #ffffff;
  border: 1px solid #d9d2c5;
  border-radius: 6px;
  padding: 16px 20px;
  font-size: 15px;
  color: #4a5260;
  line-height: 1.7;
}

.criteria-item strong {
  color: #1f3a5f;
  font-weight: 600;
  min-width: 80px;
  flex-shrink: 0;
}

.criteria-note {
  font-size: 14px;
  color: #8d99ae;
  line-height: 1.7;
  background-color: #f0ece3;
  border-left: 3px solid #e76f51;
  padding: 12px 16px;
  border-radius: 0 4px 4px 0;
}

.method-links {
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid #d9d2c5;
}

.method-links .aside-title {
  font-size: 16px;
  font-weight: 600;
  color: #1f3a5f;
  margin-bottom: 12px;
}

.method-links .link-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.method-links .link-list a {
  font-size: 14px;
  color: #3a7ca5;
}

.method-links .link-list a:hover {
  color: #1f3a5f;
}

/* ============================================================
   components / scenarios page
   ============================================================ */
.scenario-filter-section {
  padding-bottom: 24px;
}

.scenario-card-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  padding-bottom: 48px;
}

.scenario-card {
  display: flex;
  flex-direction: column;
  background-color: #ffffff;
  border: 1px solid #d9d2c5;
  border-radius: 6px;
  overflow: hidden;
}

.scenario-media {
  width: 100%;
  overflow: hidden;
}

.scenario-media img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.scenario-content {
  padding: 20px 24px 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.scenario-name {
  font-size: 19px;
  font-weight: 600;
  color: #1f3a5f;
}

.scenario-pain {
  font-size: 14px;
  color: #5a6270;
  line-height: 1.6;
  padding: 10px 14px;
  background-color: #faf8f3;
  border-left: 3px solid #e76f51;
  border-radius: 0 4px 4px 0;
}

.scenario-solution h4,
.scenario-delivery h4 {
  font-size: 14px;
  font-weight: 600;
  color: #1f3a5f;
  margin-bottom: 6px;
}

.scenario-solution p {
  font-size: 14px;
  color: #4a5260;
  line-height: 1.6;
}

.scenario-delivery ul {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-left: 18px;
  list-style: disc;
}

.scenario-delivery ul li {
  font-size: 14px;
  color: #4a5260;
  line-height: 1.6;
}

.scenario-service-map-section {
  padding-bottom: 48px;
}

.table-note {
  margin-top: 14px;
  font-size: 14px;
  color: #8d99ae;
}

.table-note a {
  color: #3a7ca5;
}

.scenario-related-links {
  padding-bottom: 16px;
}

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

.related-link {
  display: block;
  padding: 18px 20px;
  background-color: #ffffff;
  border: 1px solid #d9d2c5;
  border-radius: 6px;
  font-size: 15px;
  font-weight: 500;
  color: #2b2d42;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.related-link:hover {
  border-color: #3a7ca5;
  color: #3a7ca5;
}

/* ============================================================
   components / faq page
   ============================================================ */
.faq-section {
  padding-bottom: 48px;
}

.guide-figure {
  border-radius: 6px;
  overflow: hidden;
  margin-bottom: 24px;
}

.guide-figure img {
  width: 100%;
  height: 220px;
  object-fit: cover;
}

.guide-figure figcaption {
  padding: 10px 16px;
  font-size: 13px;
  color: #8d99ae;
  background-color: #f0ece3;
}

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

.topic-block h3 {
  font-size: 17px;
  font-weight: 600;
  color: #1f3a5f;
  margin-bottom: 14px;
  padding-bottom: 8px;
  border-bottom: 2px solid #e76f51;
}

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

.glossary-item {
  background-color: #ffffff;
  border: 1px solid #d9d2c5;
  border-radius: 6px;
  padding: 16px 20px;
}

.glossary-item dt {
  font-size: 15px;
  font-weight: 600;
  color: #1f3a5f;
  margin-bottom: 6px;
}

.glossary-item dd {
  font-size: 14px;
  color: #5a6270;
  line-height: 1.7;
}

.section-footnote {
  margin-top: 20px;
  font-size: 14px;
  color: #8d99ae;
}

.section-footnote a {
  color: #3a7ca5;
}

.faq-section .related-links ul {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.faq-section .related-links ul a {
  font-size: 14px;
  color: #3a7ca5;
}

/* ============================================================
   components / about page
   ============================================================ */
.about-intro {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 40px;
  align-items: center;
  padding-bottom: 48px;
}

.intro-copy h2 {
  font-size: 24px;
  font-weight: 700;
  color: #1f3a5f;
  margin-bottom: 16px;
}

.intro-copy p {
  font-size: 15px;
  color: #4a5260;
  line-height: 1.8;
  margin-bottom: 14px;
}

.intro-media {
  border-radius: 6px;
  overflow: hidden;
}

.intro-media .media-cover {
  width: 100%;
  height: 280px;
  object-fit: cover;
}

.intro-media figcaption {
  padding: 10px 16px;
  font-size: 13px;
  color: #8d99ae;
  background-color: #f0ece3;
}

.principle-list {
  padding-bottom: 48px;
}

.principle-list h2 {
  font-size: 24px;
  font-weight: 700;
  color: #1f3a5f;
  margin-bottom: 12px;
}

.principle-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background-color: #e76f51;
  color: #ffffff;
  font-size: 15px;
  font-weight: 700;
  border-radius: 50%;
  margin-bottom: 12px;
  font-variant-numeric: tabular-nums;
}

.principle-card h3 {
  font-size: 17px;
  font-weight: 600;
  color: #1f3a5f;
  margin-bottom: 8px;
}

.work-method {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 40px;
  align-items: start;
  padding-bottom: 48px;
}

.method-content h2 {
  font-size: 24px;
  font-weight: 700;
  color: #1f3a5f;
  margin-bottom: 16px;
}

.method-content p {
  font-size: 15px;
  color: #4a5260;
  line-height: 1.8;
  margin-bottom: 14px;
}

.method-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}

.text-link {
  display: inline-block;
  padding: 8px 18px;
  font-size: 14px;
  font-weight: 500;
  color: #3a7ca5;
  border: 1px solid #3a7ca5;
  border-radius: 6px;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.text-link:hover {
  background-color: #3a7ca5;
  color: #ffffff;
}

.method-aside {
  background-color: #f0ece3;
  border: 1px solid #d9d2c5;
  border-radius: 6px;
  padding: 24px;
}

.method-aside h3 {
  font-size: 17px;
  font-weight: 600;
  color: #1f3a5f;
  margin-bottom: 12px;
}

.method-aside p {
  font-size: 14px;
  color: #5a6270;
  line-height: 1.7;
  margin-bottom: 10px;
}

/* ============================================================
   components / cooperate page
   ============================================================ */
.section-block {
  padding-bottom: 48px;
}

.steps-list {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  margin-bottom: 28px;
}

.steps-list .step-item {
  background-color: #ffffff;
  border: 1px solid #d9d2c5;
  border-radius: 6px;
  padding: 20px;
}

.steps-list .step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background-color: #e76f51;
  color: #ffffff;
  font-size: 15px;
  font-weight: 700;
  border-radius: 50%;
  margin-bottom: 12px;
  font-variant-numeric: tabular-nums;
}

.steps-list .step-title {
  font-size: 16px;
  font-weight: 600;
  color: #1f3a5f;
  margin-bottom: 6px;
}

.steps-list .step-desc {
  font-size: 13px;
  color: #5a6270;
  line-height: 1.6;
}

.step-figure {
  border-radius: 6px;
  overflow: hidden;
  margin-top: 8px;
}

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

.step-figure figcaption {
  padding: 10px 16px;
  font-size: 13px;
  color: #8d99ae;
  background-color: #f0ece3;
}

.checklist-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.checklist-card {
  background-color: #ffffff;
  border: 1px solid #d9d2c5;
  border-radius: 6px;
  padding: 24px;
}

.checklist-card .card-title {
  font-size: 16px;
  font-weight: 600;
  color: #1f3a5f;
  margin-bottom: 10px;
}

.checklist-card .card-desc {
  font-size: 14px;
  color: #5a6270;
  line-height: 1.7;
}

.commitment-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.commitment-item {
  background-color: #ffffff;
  border: 1px solid #d9d2c5;
  border-radius: 6px;
  padding: 20px 24px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.commitment-title-item {
  font-size: 16px;
  font-weight: 600;
  color: #1f3a5f;
}

.commitment-desc {
  font-size: 14px;
  color: #5a6270;
  line-height: 1.7;
}

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

.feedback-item {
  background-color: #ffffff;
  border: 1px solid #d9d2c5;
  border-radius: 6px;
  padding: 24px;
}

.feedback-item-title {
  font-size: 16px;
  font-weight: 600;
  color: #1f3a5f;
  margin-bottom: 8px;
}

.feedback-item-desc {
  font-size: 14px;
  color: #5a6270;
  line-height: 1.7;
}

.feedback-item-desc a {
  color: #3a7ca5;
  font-weight: 500;
}

.feedback-note-tip {
  margin-top: 16px;
  font-size: 14px;
  color: #8d99ae;
  background-color: #f0ece3;
  border-left: 3px solid #e76f51;
  padding: 12px 16px;
  border-radius: 0 4px 4px 0;
}

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

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

.error-code {
  font-size: 80px;
  font-weight: 700;
  color: #e76f51;
  line-height: 1;
  margin-bottom: 16px;
  font-variant-numeric: tabular-nums;
}

.error-panel h1 {
  font-size: 24px;
  color: #1f3a5f;
  margin-bottom: 12px;
}

.error-desc {
  font-size: 15px;
  color: #5a6270;
  line-height: 1.7;
  margin-bottom: 24px;
}

.error-back {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  background-color: #e76f51;
  color: #ffffff;
  font-size: 15px;
  font-weight: 600;
  border-radius: 6px;
  transition: background-color 0.2s ease;
}

.error-back:hover {
  background-color: #d95f42;
  color: #ffffff;
}

/* ============================================================
   responsive
   ============================================================ */
@media (max-width: 1024px) {
  .header-inner {
    padding: 0 20px;
  }

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

  .header-cta {
    padding: 10px 16px;
    font-size: 14px;
  }

  .site-main {
    padding: 0 20px;
  }

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

  .footer-brand {
    padding-right: 0;
  }

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

  .hero-section {
    gap: 32px;
    padding: 40px 0;
  }

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

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

  .framework-steps {
    grid-template-columns: repeat(3, 1fr);
  }

  .steps-list {
    grid-template-columns: repeat(3, 1fr);
  }

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

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

  .service-list-section .service-card {
    grid-template-columns: 220px 1fr;
  }
}

@media (max-width: 768px) {
  .header-inner {
    flex-wrap: wrap;
    min-height: 60px;
    padding: 12px 16px;
    gap: 12px;
  }

  .nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 44px;
    min-height: 44px;
  }

  .site-nav {
    flex-basis: 100%;
    order: 3;
    justify-content: flex-start;
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    gap: 0;
    padding: 8px 0;
  }

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

  .nav-item {
    width: 100%;
  }

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

  .header-cta {
    margin-left: auto;
    padding: 10px 18px;
  }

  .site-main {
    padding: 0 16px;
  }

  .inner-main {
    padding-top: 24px;
    padding-bottom: 48px;
  }

  .page-header {
    padding: 16px 0 24px;
  }

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

  .footer-inner {
    padding: 32px 16px 16px;
  }

  .footer-links {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .hero-section {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 28px 0 36px;
  }

  .hero-copy {
    order: 1;
  }

  .hero-media {
    order: 2;
  }

  .hero-media img {
    height: 240px;
  }

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

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

  .hero-actions {
    gap: 10px;
  }

  .btn-primary,
  .btn-secondary {
    padding: 12px 20px;
    font-size: 15px;
  }

  .strip-list {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .service-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .chain-list {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .scenario-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .step-list {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }

  .faq-grid {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .home-main .related-links {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

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

  .service-list-section .card-image {
    height: 180px;
    min-height: 0;
  }

  .service-list-section .card-content {
    padding: 16px 20px 20px;
  }

  .principle-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .framework-steps {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }

  .process-node {
    padding: 20px;
  }

  .topic-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .glossary-list {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .scenario-card-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .related-links-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .about-intro {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .intro-media .media-cover {
    height: 220px;
  }

  .work-method {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .steps-list {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }

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

  .feedback-links {
    grid-template-columns: 1fr;
    gap: 12px;
  }

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

  .error-code {
    font-size: 56px;
  }
}

@media (max-width: 480px) {
  .header-cta {
    padding: 10px 14px;
    font-size: 13px;
  }

  .brand-mark {
    width: 32px;
    height: 32px;
    font-size: 14px;
  }

  .footer-links {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .step-list {
    grid-template-columns: 1fr;
  }

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

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

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

  .hero-media img {
    height: 200px;
  }

  .service-list-section .card-image {
    height: 160px;
  }

  .scenario-media img {
    height: 180px;
  }

  .process-media .media-img {
    height: 200px;
  }

  .step-figure .step-image {
    height: 180px;
  }
}