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

*, *::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', sans-serif;
  font-size: 16px;
  line-height: 1.75;
  color: #1E1E1E;
  background-color: #F5F4F1;
}

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

a {
  color: #A8804F;
  text-decoration: none;
}

a:hover {
  color: #8a6a3a;
}

h1, h2, h3, h4 {
  margin: 0 0 0.5em;
  font-weight: 600;
  line-height: 1.3;
}

p {
  margin: 0 0 1em;
}

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

figure {
  margin: 0;
}

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

.site-body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.site-header {
  background-color: #FFFFFF;
  border-bottom: 1px solid #E8E4DE;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.brand-link {
  display: flex;
  align-items: center;
  text-decoration: none;
}

.brand-name {
  font-size: 20px;
  font-weight: 600;
  color: #1E1E1E;
  letter-spacing: 0.02em;
}

.main-nav ul {
  display: flex;
  gap: 32px;
}

.nav-link {
  display: inline-block;
  padding: 8px 0;
  font-size: 15px;
  color: #5A5A5A;
  text-decoration: none;
  transition: color 0.2s ease;
}

.nav-link:hover {
  color: #A8804F;
}

.nav-link.is-current {
  color: #A8804F;
  font-weight: 600;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: transparent;
  border: 0;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: #1E1E1E;
  transition: background-color 0.2s ease;
}

.site-main {
  flex: 1;
}

.site-footer {
  background-color: #FFFFFF;
  border-top: 1px solid #E8E4DE;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 24px;
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  gap: 32px;
}

.footer-brand {
  flex: 1 1 240px;
}

.footer-name {
  display: block;
  font-size: 18px;
  font-weight: 600;
  color: #1E1E1E;
  margin-bottom: 4px;
}

.footer-tagline {
  font-size: 14px;
  color: #5A5A5A;
  margin-bottom: 8px;
}

.footer-desc {
  font-size: 13px;
  color: #5A5A5A;
  margin: 0;
}

.footer-nav {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  align-items: center;
}

.footer-link {
  font-size: 14px;
  color: #5A5A5A;
  text-decoration: none;
  padding: 6px 0;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

.footer-link:hover {
  color: #A8804F;
}

.copyright {
  flex-basis: 100%;
  font-size: 13px;
  color: #5A5A5A;
  margin: 16px 0 0;
}

/* ==========================================================================
   Breadcrumb / Page Header
   ========================================================================== */

.breadcrumb {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px 24px 0;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: #5A5A5A;
}

.breadcrumb a {
  color: #5A5A5A;
  text-decoration: none;
}

.breadcrumb a:hover {
  color: #A8804F;
}

.breadcrumb-sep {
  color: #A8804F;
}

.breadcrumb-current {
  color: #1E1E1E;
}

.page-header {
  max-width: 1200px;
  margin: 0 auto;
  padding: 16px 24px 0;
}

.page-title {
  font-size: 32px;
  font-weight: 600;
  line-height: 1.3;
  color: #1E1E1E;
  margin: 0 0 8px;
}

.page-title-block {
  max-width: 1200px;
  margin: 0 auto;
  padding: 8px 24px 24px;
}

.archive-code,
.archive-number,
.page-title-meta,
.page-meta,
.meta-code {
  display: inline-block;
  font-size: 13px;
  color: #A8804F;
  letter-spacing: 0.06em;
  margin: 0 0 8px;
  font-family: 'SF Mono', 'Cascadia Code', Consolas, monospace;
}

.page-intro,
.page-lead {
  font-size: 16px;
  color: #5A5A5A;
  max-width: 760px;
  margin: 0;
  line-height: 1.75;
}

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

.section {
  padding: 0 24px;
}

.section-header {
  max-width: 1200px;
  margin: 0 auto 32px;
}

.section-kicker {
  font-size: 13px;
  color: #A8804F;
  letter-spacing: 0.08em;
  margin: 0 0 8px;
  text-transform: uppercase;
}

.section-title {
  font-size: 24px;
  color: #1E1E1E;
  margin: 0;
  line-height: 1.4;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 15px;
  color: #A8804F;
  font-weight: 500;
  text-decoration: none;
  padding: 8px 0;
  min-height: 44px;
}

.text-link:hover {
  color: #8a6a3a;
}

.text-link::after {
  content: '→';
  font-size: 14px;
  transition: transform 0.2s ease;
}

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

/* ==========================================================================
   Components / Header Nav Mobile
   ========================================================================== */

@media (max-width: 768px) {
  .main-nav ul {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background-color: #FFFFFF;
    border-bottom: 1px solid #E8E4DE;
    flex-direction: column;
    gap: 0;
    padding: 8px 24px 16px;
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.05);
  }

  .main-nav ul.is-open {
    display: flex;
  }

  .nav-link {
    display: block;
    padding: 14px 0;
    font-size: 16px;
    border-bottom: 1px solid #F0EDE8;
  }

  .nav-toggle {
    display: flex;
  }
}

/* ==========================================================================
   Components / FAQ Accordion
   ========================================================================== */

.faq-item {
  border: 1px solid #E8E4DE;
  background-color: #FFFFFF;
  border-radius: 6px;
  margin-bottom: 12px;
  overflow: hidden;
}

.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 20px;
  font-size: 15px;
  font-weight: 500;
  color: #1E1E1E;
  cursor: pointer;
  list-style: none;
  min-height: 52px;
}

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

.faq-item summary::after {
  content: '+';
  font-size: 20px;
  color: #A8804F;
  flex-shrink: 0;
  transition: transform 0.2s ease;
}

.faq-item[open] summary::after {
  transform: rotate(45deg);
}

.faq-item[open] summary {
  border-bottom: 1px solid #F0EDE8;
}

.faq-item p,
.faq-answer {
  padding: 12px 20px 20px;
  margin: 0;
  font-size: 14px;
  color: #5A5A5A;
  line-height: 1.7;
}

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

.service-card,
.case-card,
.version-card {
  background-color: #FFFFFF;
  border: 1px solid #E8E4DE;
  border-radius: 6px;
  padding: 20px;
  transition: border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.service-card:hover,
.case-card:hover {
  border-color: #A8804F;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.04);
}

.card-index {
  display: inline-block;
  font-size: 13px;
  color: #A8804F;
  font-family: 'SF Mono', 'Cascadia Code', Consolas, monospace;
  margin-bottom: 12px;
}

.card-title {
  font-size: 18px;
  color: #1E1E1E;
  margin-bottom: 8px;
}

.card-text {
  font-size: 14px;
  color: #5A5A5A;
  line-height: 1.7;
  margin-bottom: 16px;
}

.card-link {
  font-size: 14px;
  color: #A8804F;
  text-decoration: none;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.card-link::after {
  content: '→';
  font-size: 13px;
}

/* ==========================================================================
   Pages / Home
   ========================================================================== */

.home-main {
  padding-bottom: 64px;
}

.hero-directory {
  background-color: #FFFFFF;
  border-bottom: 1px solid #E8E4DE;
}

.hero-directory-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 48px 24px 56px;
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 48px;
  align-items: start;
}

.hero-catalog {
  padding-top: 8px;
}

.catalog-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-top: 16px;
}

.catalog-item {
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding: 14px 16px;
  border-radius: 6px;
  text-decoration: none;
  transition: background-color 0.2s ease;
  min-height: 48px;
}

.catalog-item:hover {
  background-color: #F5F4F1;
}

.item-index {
  font-size: 13px;
  color: #A8804F;
  font-family: 'SF Mono', 'Cascadia Code', Consolas, monospace;
  flex-shrink: 0;
}

.item-name {
  font-size: 16px;
  color: #1E1E1E;
  font-weight: 500;
}

.hero-feature {
  background-color: #F5F4F1;
  border: 1px solid #E8E4DE;
  border-radius: 8px;
  padding: 24px;
}

.feature-media {
  margin-bottom: 16px;
}

.feature-media img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 6px;
}

.feature-title {
  font-size: 20px;
  color: #1E1E1E;
  margin-bottom: 8px;
}

.feature-text {
  font-size: 14px;
  color: #5A5A5A;
  line-height: 1.7;
  margin-bottom: 16px;
}

.page-h1 {
  max-width: 1200px;
  margin: 0 auto;
  padding: 48px 24px 24px;
  font-size: 32px;
  color: #1E1E1E;
}

/* Service overview */

.service-overview {
  padding-top: 48px;
  padding-bottom: 48px;
}

.service-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

/* Industry showcase */

.industry-showcase {
  background-color: #FFFFFF;
  border-top: 1px solid #E8E4DE;
  border-bottom: 1px solid #E8E4DE;
  padding-top: 48px;
  padding-bottom: 48px;
}

.case-list {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.case-media {
  margin-bottom: 16px;
}

.case-media img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 6px;
}

.case-tag {
  display: inline-block;
  font-size: 12px;
  color: #A8804F;
  background-color: #F5F4F1;
  border: 1px solid #E8E4DE;
  padding: 4px 10px;
  border-radius: 4px;
  margin-bottom: 12px;
}

.case-title {
  font-size: 17px;
  color: #1E1E1E;
  margin-bottom: 8px;
}

.case-text {
  font-size: 14px;
  color: #5A5A5A;
  line-height: 1.7;
  margin-bottom: 16px;
}

.case-link {
  font-size: 14px;
  color: #A8804F;
  text-decoration: none;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.case-link::after {
  content: '→';
  font-size: 13px;
}

/* Version note */

.version-note {
  padding-top: 48px;
  padding-bottom: 48px;
}

.version-note-inner {
  max-width: 1200px;
  margin: 0 auto;
  background-color: #FFFFFF;
  border: 1px solid #E8E4DE;
  border-left: 3px solid #A8804F;
  border-radius: 6px;
  padding: 24px 28px;
}

.version-text {
  font-size: 15px;
  color: #5A5A5A;
  margin-bottom: 8px;
  max-width: 760px;
}

/* Process preview */

.process-preview {
  background-color: #FFFFFF;
  border-top: 1px solid #E8E4DE;
  border-bottom: 1px solid #E8E4DE;
  padding-top: 48px;
  padding-bottom: 48px;
}

.process-steps {
  max-width: 1200px;
  margin: 0 auto 16px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.step-item {
  background-color: #F5F4F1;
  border: 1px solid #E8E4DE;
  border-radius: 6px;
  padding: 20px;
}

.step-index {
  display: block;
  font-size: 13px;
  color: #A8804F;
  font-family: 'SF Mono', 'Cascadia Code', Consolas, monospace;
  margin-bottom: 12px;
}

.step-title {
  font-size: 16px;
  color: #1E1E1E;
  margin-bottom: 8px;
}

.step-text {
  font-size: 13px;
  color: #5A5A5A;
  line-height: 1.6;
  margin: 0;
}

.process-preview .text-link {
  display: block;
  max-width: 1200px;
  margin: 0 auto;
}

/* FAQ preview */

.faq-preview {
  padding-top: 48px;
  padding-bottom: 48px;
}

.faq-columns {
  max-width: 1200px;
  margin: 0 auto 16px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

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

.faq-preview .text-link {
  display: block;
  max-width: 1200px;
  margin: 0 auto;
}

/* Compliance note */

.compliance-note {
  padding-top: 32px;
  padding-bottom: 32px;
}

.compliance-note > * {
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
}

.compliance-text {
  font-size: 13px;
  color: #5A5A5A;
  background-color: #FFFFFF;
  border: 1px solid #E8E4DE;
  border-radius: 6px;
  padding: 16px 20px;
  line-height: 1.7;
}

.compliance-note .text-link {
  margin-top: 8px;
}

/* ==========================================================================
   Pages / Services
   ========================================================================== */

.layout-shell {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px 48px;
  display: grid;
  gap: 40px;
}

.layout-shell.sidebar-left {
  grid-template-columns: 260px 1fr;
  align-items: start;
}

.service-anchor-list {
  position: sticky;
  top: 96px;
  background-color: #FFFFFF;
  border: 1px solid #E8E4DE;
  border-radius: 6px;
  padding: 20px;
}

.aside-title {
  font-size: 15px;
  color: #1E1E1E;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid #F0EDE8;
}

.anchor-menu li {
  margin-bottom: 4px;
}

.anchor-menu a {
  display: block;
  padding: 10px 12px;
  font-size: 14px;
  color: #5A5A5A;
  text-decoration: none;
  border-radius: 4px;
  transition: background-color 0.2s ease, color 0.2s ease;
  min-height: 44px;
  display: flex;
  align-items: center;
}

.anchor-menu a:hover {
  background-color: #F5F4F1;
  color: #A8804F;
}

.service-modules {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.service-item {
  background-color: #FFFFFF;
  border: 1px solid #E8E4DE;
  border-radius: 6px;
  padding: 28px;
  scroll-margin-top: 96px;
}

.service-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.service-num {
  font-size: 13px;
  color: #A8804F;
  font-family: 'SF Mono', 'Cascadia Code', Consolas, monospace;
  flex-shrink: 0;
}

.service-name {
  font-size: 20px;
  color: #1E1E1E;
  margin: 0;
}

.service-desc {
  font-size: 14px;
  color: #5A5A5A;
  line-height: 1.7;
  margin-bottom: 20px;
}

.service-meta {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 16px;
}

.meta-block {
  background-color: #F5F4F1;
  border-radius: 6px;
  padding: 16px;
}

.meta-title {
  font-size: 13px;
  color: #A8804F;
  margin-bottom: 6px;
}

.meta-text {
  font-size: 14px;
  color: #5A5A5A;
  line-height: 1.6;
  margin: 0;
}

.service-combine-tip {
  background-color: #F5F4F1;
  border: 1px solid #E8E4DE;
  border-left: 3px solid #A8804F;
  border-radius: 6px;
  padding: 24px 28px;
}

.combine-title {
  font-size: 18px;
  color: #1E1E1E;
  margin-bottom: 12px;
}

.combine-text {
  font-size: 14px;
  color: #5A5A5A;
  line-height: 1.7;
  margin-bottom: 16px;
}

.combine-links {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}

.service-visual {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px 48px;
}

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

.service-figure img {
  width: 100%;
  aspect-ratio: 21 / 9;
  object-fit: cover;
}

.service-figure figcaption {
  padding: 12px 20px;
  font-size: 13px;
  color: #5A5A5A;
}

.related-links {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px 48px;
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.related-links-label {
  font-size: 13px;
  color: #5A5A5A;
}

.related-links-item {
  font-size: 14px;
  color: #A8804F;
  text-decoration: none;
  padding: 8px 0;
}

.related-links-item:hover {
  color: #8a6a3a;
}

/* ==========================================================================
   Pages / Industries
   ========================================================================== */

.industry-nav {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px 32px;
}

.industry-tabs {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 16px;
}

.industry-tab {
  display: inline-flex;
  align-items: center;
  padding: 10px 20px;
  font-size: 14px;
  color: #5A5A5A;
  background-color: #FFFFFF;
  border: 1px solid #E8E4DE;
  border-radius: 6px;
  text-decoration: none;
  min-height: 44px;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.industry-tab:hover {
  border-color: #A8804F;
  color: #A8804F;
}

.case-grid {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px 48px;
}

.case-grid .section-title {
  margin-bottom: 24px;
}

.case-grid .case-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  padding: 0;
  overflow: hidden;
  margin-bottom: 20px;
}

.case-grid .case-media {
  margin: 0;
}

.case-grid .case-media img {
  width: 100%;
  height: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 0;
}

.case-grid .case-body {
  padding: 20px 20px 20px 0;
}

.case-number {
  font-size: 13px;
  color: #A8804F;
  font-family: 'SF Mono', 'Cascadia Code', Consolas, monospace;
  margin-bottom: 8px;
}

.case-summary {
  font-size: 14px;
  color: #5A5A5A;
  line-height: 1.7;
  margin-bottom: 16px;
}

.case-detail-section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px 48px;
}

.case-detail-section .section-title {
  margin-bottom: 24px;
}

.case-detail {
  background-color: #FFFFFF;
  border: 1px solid #E8E4DE;
  border-radius: 6px;
  padding: 28px;
  margin-bottom: 24px;
}

.case-detail h3 {
  font-size: 18px;
  color: #1E1E1E;
  margin-bottom: 16px;
}

.case-block {
  margin-bottom: 20px;
}

.case-block h4 {
  font-size: 15px;
  color: #A8804F;
  margin-bottom: 8px;
}

.case-block p {
  font-size: 14px;
  color: #5A5A5A;
  line-height: 1.7;
  margin: 0;
}

.case-detail-link {
  display: inline-block;
  font-size: 14px;
  color: #A8804F;
  text-decoration: none;
  font-weight: 500;
  padding: 8px 0;
}

.case-pagination {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px 48px;
  display: flex;
  justify-content: space-between;
  gap: 16px;
}

.prev-case,
.next-case {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  font-size: 14px;
  color: #5A5A5A;
  background-color: #FFFFFF;
  border: 1px solid #E8E4DE;
  border-radius: 6px;
  text-decoration: none;
  min-height: 44px;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.prev-case:hover,
.next-case:hover {
  border-color: #A8804F;
  color: #A8804F;
}

.prev-case::before {
  content: '←';
}

.next-case::after {
  content: '→';
}

.cta-block {
  background-color: #FFFFFF;
  border-top: 1px solid #E8E4DE;
  padding: 48px 24px;
}

.cta-block .section-title {
  max-width: 1200px;
  margin: 0 auto 12px;
}

.cta-block p {
  max-width: 1200px;
  margin: 0 auto 24px;
  font-size: 14px;
  color: #5A5A5A;
}

.cta-links {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.cta-link {
  display: inline-flex;
  align-items: center;
  padding: 12px 24px;
  font-size: 14px;
  color: #FFFFFF;
  background-color: #A8804F;
  border-radius: 6px;
  text-decoration: none;
  min-height: 44px;
  transition: background-color 0.2s ease;
}

.cta-link:hover {
  background-color: #8a6a3a;
  color: #FFFFFF;
}

/* ==========================================================================
   Pages / Versions
   ========================================================================== */

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

.page-head {
  padding-bottom: 24px;
}

.title-row {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.version-current {
  padding-bottom: 48px;
}

.version-card {
  border-left: 3px solid #A8804F;
}

.version-head {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.version-tag {
  display: inline-block;
  font-size: 12px;
  color: #FFFFFF;
  background-color: #A8804F;
  padding: 4px 10px;
  border-radius: 4px;
  font-weight: 500;
}

.version-head h2 {
  font-size: 22px;
  color: #1E1E1E;
  margin: 0;
}

.version-meta {
  font-size: 13px;
  color: #5A5A5A;
}

.version-intro p {
  font-size: 15px;
  color: #5A5A5A;
  line-height: 1.7;
  margin-bottom: 16px;
}

.version-changes h3 {
  font-size: 15px;
  color: #1E1E1E;
  margin-bottom: 12px;
}

.version-changes ul {
  padding-left: 20px;
  list-style: disc;
  margin-bottom: 20px;
}

.version-changes li {
  font-size: 14px;
  color: #5A5A5A;
  line-height: 1.7;
  margin-bottom: 6px;
}

.version-links {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.version-links a {
  font-size: 14px;
  color: #A8804F;
  text-decoration: none;
  font-weight: 500;
  padding: 8px 0;
}

.version-timeline {
  background-color: #FFFFFF;
  border-top: 1px solid #E8E4DE;
  border-bottom: 1px solid #E8E4DE;
  padding: 48px 0;
}

.section-head {
  margin-bottom: 24px;
}

.section-head h2 {
  font-size: 24px;
  color: #1E1E1E;
  margin-bottom: 8px;
}

.section-head p {
  font-size: 14px;
  color: #5A5A5A;
  margin: 0;
}

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

.version-item {
  border: 1px solid #E8E4DE;
  border-radius: 6px;
  background-color: #F5F4F1;
  overflow: hidden;
}

.version-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  cursor: pointer;
  list-style: none;
  min-height: 52px;
}

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

.version-item summary::after {
  content: '+';
  font-size: 20px;
  color: #A8804F;
  transition: transform 0.2s ease;
}

.version-item[open] summary::after {
  transform: rotate(45deg);
}

.version-name {
  font-size: 16px;
  font-weight: 600;
  color: #1E1E1E;
}

.version-summary {
  font-size: 14px;
  color: #5A5A5A;
}

.version-detail {
  padding: 0 24px 20px;
  border-top: 1px solid #E8E4DE;
}

.version-detail p {
  font-size: 14px;
  color: #5A5A5A;
  line-height: 1.7;
  margin-bottom: 8px;
}

.version-detail p:last-child {
  margin-bottom: 0;
}

.version-compare {
  padding: 48px 0;
}

.table-wrap {
  overflow-x: auto;
}

.version-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  background-color: #FFFFFF;
  border: 1px solid #E8E4DE;
  border-radius: 6px;
  overflow: hidden;
}

.version-table th,
.version-table td {
  padding: 14px 16px;
  text-align: left;
  border-bottom: 1px solid #F0EDE8;
}

.version-table th {
  background-color: #F5F4F1;
  font-weight: 600;
  color: #1E1E1E;
  white-space: nowrap;
}

.version-table td {
  color: #5A5A5A;
  vertical-align: top;
}

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

.version-note {
  padding-bottom: 48px;
}

.note-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: center;
  background-color: #FFFFFF;
  border: 1px solid #E8E4DE;
  border-radius: 8px;
  padding: 28px;
}

.note-media img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 6px;
}

.note-content h2 {
  font-size: 20px;
  color: #1E1E1E;
  margin-bottom: 12px;
}

.note-content p {
  font-size: 14px;
  color: #5A5A5A;
  line-height: 1.7;
}

.note-content a {
  display: inline-block;
  font-size: 14px;
  color: #A8804F;
  text-decoration: none;
  font-weight: 500;
  padding: 8px 0;
}

/* ==========================================================================
   Pages / FAQ
   ========================================================================== */

.page-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px 48px;
}

.faq-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: start;
}

.faq-group {
  margin-bottom: 24px;
}

.faq-group h2 {
  font-size: 18px;
  color: #1E1E1E;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid #E8E4DE;
}

.content-media {
  margin-bottom: 16px;
}

.content-media img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: 6px;
}

.content-media figcaption {
  padding: 8px 0 0;
  font-size: 13px;
  color: #5A5A5A;
}

.faq-feedback {
  background-color: #FFFFFF;
  border: 1px solid #E8E4DE;
  border-radius: 6px;
  padding: 24px 28px;
  margin-top: 32px;
}

.faq-feedback h2 {
  font-size: 18px;
  color: #1E1E1E;
  margin-bottom: 12px;
}

.faq-feedback p {
  font-size: 14px;
  color: #5A5A5A;
  line-height: 1.7;
  margin-bottom: 0;
}

.faq-feedback a {
  color: #A8804F;
  text-decoration: none;
  font-weight: 500;
}

/* ==========================================================================
   Pages / Process
   ========================================================================== */

.layout-shell {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px 48px;
  display: grid;
  gap: 40px;
}

.layout-shell:not(.sidebar-left) {
  grid-template-columns: 1fr 300px;
}

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

.module-block {
  margin-bottom: 48px;
}

.module-block .section-title {
  font-size: 22px;
  color: #1E1E1E;
  margin-bottom: 12px;
}

.section-intro {
  font-size: 14px;
  color: #5A5A5A;
  margin-bottom: 24px;
  max-width: 640px;
}

.timeline-steps {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.timeline-item {
  display: flex;
  gap: 20px;
  background-color: #FFFFFF;
  border: 1px solid #E8E4DE;
  border-radius: 6px;
  padding: 20px;
}

.step-number {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  font-weight: 600;
  color: #A8804F;
  background-color: #F5F4F1;
  border: 1px solid #E8E4DE;
  border-radius: 50%;
  font-family: 'SF Mono', 'Cascadia Code', Consolas, monospace;
}

.step-body {
  flex: 1;
}

.step-body h3 {
  font-size: 16px;
  color: #1E1E1E;
  margin-bottom: 6px;
}

.step-body p {
  font-size: 14px;
  color: #5A5A5A;
  line-height: 1.7;
  margin-bottom: 8px;
}

.step-output {
  font-size: 13px;
  color: #A8804F;
  margin: 0;
}

/* Stepper */

.stepper-widget {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background-color: #FFFFFF;
  border: 1px solid #E8E4DE;
  border-radius: 6px;
  padding: 12px 16px;
}

.stepper-btn {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  color: #A8804F;
  background-color: #F5F4F1;
  border: 1px solid #E8E4DE;
  border-radius: 6px;
  cursor: pointer;
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.stepper-btn:hover {
  background-color: #E8E4DE;
}

.stepper-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.stepper-value {
  font-size: 18px;
  font-weight: 600;
  color: #1E1E1E;
  min-width: 32px;
  text-align: center;
  font-family: 'SF Mono', 'Cascadia Code', Consolas, monospace;
}

.stepper-unit {
  font-size: 14px;
  color: #5A5A5A;
}

.stepper-hint {
  font-size: 14px;
  color: #5A5A5A;
  margin-top: 16px;
  max-width: 480px;
}

/* Access guide */

.access-guide {
  background-color: #FFFFFF;
  border: 1px solid #E8E4DE;
  border-radius: 6px;
  padding: 24px 28px;
}

.access-guide p {
  font-size: 14px;
  color: #5A5A5A;
  line-height: 1.7;
}

.access-list {
  margin: 16px 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.access-list li {
  padding-left: 16px;
  position: relative;
}

.access-list li::before {
  content: '·';
  position: absolute;
  left: 0;
  color: #A8804F;
  font-weight: 600;
}

.access-list a {
  font-size: 14px;
  color: #A8804F;
  text-decoration: none;
}

.access-list a:hover {
  color: #8a6a3a;
}

/* Process aside */

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

.aside-card {
  background-color: #FFFFFF;
  border: 1px solid #E8E4DE;
  border-radius: 6px;
  padding: 24px;
  position: sticky;
  top: 96px;
}

.aside-card h2 {
  font-size: 16px;
  color: #1E1E1E;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid #F0EDE8;
}

.aside-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 16px;
}

.aside-list li {
  padding: 8px 0;
  font-size: 14px;
  color: #5A5A5A;
  border-bottom: 1px solid #F5F4F1;
}

.aside-link {
  display: inline-block;
  font-size: 14px;
  color: #A8804F;
  text-decoration: none;
  font-weight: 500;
  padding: 8px 0;
}

/* Process figure */

.process-figure {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px 48px;
}

.process-figure img {
  width: 100%;
  aspect-ratio: 21 / 9;
  object-fit: cover;
  border-radius: 6px;
}

.process-figure figcaption {
  padding: 8px 0 0;
  font-size: 13px;
  color: #5A5A5A;
}

/* ==========================================================================
   Pages / About
   ========================================================================== */

.about-intro {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px 48px;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 40px;
  align-items: center;
}

.about-intro-text h2 {
  font-size: 22px;
  color: #1E1E1E;
  margin-bottom: 16px;
}

.about-intro-text p {
  font-size: 15px;
  color: #5A5A5A;
  line-height: 1.75;
  margin-bottom: 16px;
}

.about-figure img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 6px;
}

.about-principles {
  background-color: #FFFFFF;
  border-top: 1px solid #E8E4DE;
  border-bottom: 1px solid #E8E4DE;
  padding: 48px 24px;
}

.about-principles h2,
.about-boundary h2,
.about-feedback h2 {
  max-width: 1200px;
  margin: 0 auto 24px;
  font-size: 22px;
  color: #1E1E1E;
}

.principle-list {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.principle-item {
  background-color: #F5F4F1;
  border: 1px solid #E8E4DE;
  border-radius: 6px;
  padding: 20px;
}

.principle-item h3 {
  font-size: 16px;
  color: #1E1E1E;
  margin-bottom: 8px;
}

.principle-item p {
  font-size: 14px;
  color: #5A5A5A;
  line-height: 1.7;
  margin: 0;
}

.about-boundary {
  padding: 48px 24px;
}

.boundary-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.boundary-item {
  background-color: #FFFFFF;
  border: 1px solid #E8E4DE;
  border-radius: 6px;
  padding: 20px;
}

.boundary-item h3 {
  font-size: 15px;
  color: #A8804F;
  margin-bottom: 8px;
}

.boundary-item p {
  font-size: 14px;
  color: #5A5A5A;
  line-height: 1.7;
  margin: 0;
}

.about-feedback {
  background-color: #FFFFFF;
  border-top: 1px solid #E8E4DE;
  padding: 48px 24px;
}

.about-feedback p {
  max-width: 1200px;
  margin: 0 auto 24px;
  font-size: 14px;
  color: #5A5A5A;
}

.feedback-links {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.feedback-links a {
  display: inline-flex;
  align-items: center;
  padding: 12px 24px;
  font-size: 14px;
  color: #FFFFFF;
  background-color: #A8804F;
  border-radius: 6px;
  text-decoration: none;
  min-height: 44px;
  transition: background-color 0.2s ease;
}

.feedback-links a:hover {
  background-color: #8a6a3a;
  color: #FFFFFF;
}

/* ==========================================================================
   Pages / 404
   ========================================================================== */

.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 80px 24px;
}

.error-panel {
  background-color: #FFFFFF;
  border: 1px solid #E8E4DE;
  border-radius: 8px;
  padding: 48px;
  text-align: center;
  max-width: 480px;
  width: 100%;
}

.error-code {
  font-size: 48px;
  font-weight: 600;
  color: #A8804F;
  margin: 0 0 8px;
  font-family: 'SF Mono', 'Cascadia Code', Consolas, monospace;
}

.error-title {
  font-size: 22px;
  color: #1E1E1E;
  margin-bottom: 12px;
}

.error-desc {
  font-size: 14px;
  color: #5A5A5A;
  line-height: 1.7;
  margin-bottom: 24px;
}

.error-link {
  display: inline-flex;
  align-items: center;
  padding: 12px 24px;
  font-size: 14px;
  color: #FFFFFF;
  background-color: #A8804F;
  border-radius: 6px;
  text-decoration: none;
  min-height: 44px;
  transition: background-color 0.2s ease;
}

.error-link:hover {
  background-color: #8a6a3a;
  color: #FFFFFF;
}

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 1024px) {
  .service-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

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

  .layout-shell.sidebar-left {
    grid-template-columns: 220px 1fr;
  }

  .layout-shell:not(.sidebar-left) {
    grid-template-columns: 1fr 260px;
  }
}

@media (max-width: 768px) {
  .header-inner {
    height: 64px;
  }

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

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

  .page-header {
    padding-top: 12px;
  }

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

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

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

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

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

  .layout-shell.sidebar-left,
  .layout-shell:not(.sidebar-left) {
    grid-template-columns: 1fr;
  }

  .service-anchor-list,
  .process-aside .aside-card {
    position: static;
  }

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

  .case-grid .case-body {
    padding: 0 20px 20px;
  }

  .faq-layout {
    grid-template-columns: 1fr;
  }

  .note-block {
    grid-template-columns: 1fr;
  }

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

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

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

  .timeline-item {
    flex-direction: column;
    gap: 12px;
  }

  .step-number {
    width: 36px;
    height: 36px;
    font-size: 14px;
  }

  .footer-inner {
    flex-direction: column;
    gap: 16px;
    padding: 32px 24px;
  }

  .footer-nav {
    order: 3;
  }

  .copyright {
    order: 4;
  }

  .hero-catalog {
    order: 1;
  }

  .hero-feature {
    order: 2;
  }
}

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

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

  .section {
    padding: 0 16px;
  }

  .hero-directory-inner,
  .page-header,
  .page-title-block,
  .breadcrumb,
  .layout-shell,
  .container,
  .page-container {
    padding-left: 16px;
    padding-right: 16px;
  }

  .service-item,
  .case-detail,
  .version-card,
  .note-block,
  .faq-feedback,
  .access-guide,
  .aside-card {
    padding: 16px;
  }

  .error-panel {
    padding: 32px 20px;
  }
}