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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.8;
  color: #2B3A42;
  background-color: #F7F5F0;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  font-family: "Songti SC", "SimSun", "Noto Serif SC", Georgia, "Times New Roman", serif;
  color: #2B3A42;
  line-height: 1.4;
  margin: 0 0 0.6em;
}

h1 { font-size: 2rem; font-weight: 700; }
h2 { font-size: 1.5rem; font-weight: 700; }
h3 { font-size: 1.15rem; font-weight: 600; }

p { margin: 0 0 1em; }

a {
  color: #5C7C6E;
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover { color: #3d5a4d; }

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

ul, ol { margin: 0 0 1em; padding-left: 1.4em; }
li { margin-bottom: 0.4em; }

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

figure { margin: 0; }

blockquote { margin: 0; }

/* ==========================================================================
   Layout
   ========================================================================== */
.site-header {
  background-color: #FFFFFF;
  border-bottom: 1px solid #E3DFD6;
  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: 68px;
}

.brand-link {
  display: inline-flex;
  align-items: center;
  font-family: "Songti SC", "SimSun", "Noto Serif SC", Georgia, serif;
  font-size: 1.35rem;
  font-weight: 700;
  color: #2B3A42;
  letter-spacing: 0.02em;
}

.brand-link:hover { color: #2B3A42; }

.site-nav .nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  align-items: center;
  gap: 4px;
}

.site-nav .nav-list li { margin: 0; }

.site-nav .nav-link {
  display: inline-block;
  padding: 8px 14px;
  font-size: 0.95rem;
  color: #2B3A42;
  border-bottom: 2px solid transparent;
  line-height: 1.4;
}

.site-nav .nav-link:hover {
  color: #5C7C6E;
  border-bottom-color: #5C7C6E;
}

.site-nav .nav-link.is-current {
  color: #5C7C6E;
  border-bottom-color: #5C7C6E;
  font-weight: 600;
}

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

.toggle-bar {
  display: block;
  width: 22px;
  height: 2px;
  background-color: #2B3A42;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

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

.site-footer {
  background-color: #FFFFFF;
  border-top: 1px solid #E3DFD6;
  margin-top: 64px;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 48px 24px 24px;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
}

.footer-brand-name {
  font-family: "Songti SC", "SimSun", "Noto Serif SC", Georgia, serif;
  font-size: 1.2rem;
  font-weight: 700;
  color: #2B3A42;
  margin-bottom: 8px;
}

.footer-brand-desc {
  font-size: 0.9rem;
  color: #6b7570;
  line-height: 1.7;
  margin-bottom: 0;
}

.footer-col-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: #2B3A42;
  margin-bottom: 12px;
}

.footer-links {
  list-style: none;
  margin: 0;
  padding: 0;
}

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

.footer-links a {
  font-size: 0.9rem;
  color: #6b7570;
}

.footer-links a:hover { color: #5C7C6E; }

.footer-bottom {
  border-top: 1px solid #E3DFD6;
  padding: 20px 24px;
  text-align: center;
}

.footer-bottom p {
  font-size: 0.85rem;
  color: #8a938e;
  margin: 0;
}

.breadcrumb {
  font-size: 0.85rem;
  color: #8a938e;
  margin-bottom: 16px;
}

.breadcrumb a { color: #5C7C6E; }
.breadcrumb a:hover { color: #3d5a4d; }

.breadcrumb-sep {
  margin: 0 8px;
  color: #b5bcb8;
}

.breadcrumb-current { color: #6b7570; }

.breadcrumb-wrap {
  background-color: #F7F5F0;
  border-bottom: 1px solid #E3DFD6;
}

.breadcrumb-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 12px 24px;
}

.breadcrumb-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  align-items: center;
  font-size: 0.85rem;
}

.breadcrumb-list li { margin: 0; }
.breadcrumb-list li + li::before {
  content: "/";
  margin: 0 8px;
  color: #b5bcb8;
}

.breadcrumb-list a { color: #5C7C6E; }
.breadcrumb-list a:hover { color: #3d5a4d; }

/* ==========================================================================
   Components
   ========================================================================== */
.page-title-block {
  padding: 40px 0 8px;
}

.page-intro {
  font-size: 1.05rem;
  color: #6b7570;
  max-width: 760px;
  line-height: 1.8;
  margin-bottom: 0;
}

.page-title-area {
  padding: 40px 0 8px;
}

.page-title-area .page-intro {
  font-size: 1.05rem;
  color: #6b7570;
  max-width: 760px;
  line-height: 1.8;
  margin-bottom: 0;
}

.page-header {
  margin-bottom: 24px;
}

.page-header .page-title {
  font-size: 2rem;
  margin-bottom: 0;
}

.layout-shell {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  padding: 24px 0 0;
  align-items: start;
}

.layout-shell.sidebar-right {
  grid-template-columns: minmax(0, 1fr) 300px;
}

.layout-shell.sidebar-left {
  grid-template-columns: 280px minmax(0, 1fr);
}

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

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

.sidebar-card {
  background-color: #FFFFFF;
  border: 1px solid #E3DFD6;
  border-left: 3px solid #5C7C6E;
  padding: 20px;
  margin-bottom: 20px;
  border-radius: 4px;
}

.sidebar-title {
  font-family: "Songti SC", "SimSun", "Noto Serif SC", Georgia, serif;
  font-size: 1rem;
  font-weight: 700;
  color: #2B3A42;
  margin-bottom: 8px;
}

.sidebar-card p:last-child {
  font-size: 0.9rem;
  color: #6b7570;
  margin-bottom: 0;
}

.sidebar-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.sidebar-list li {
  margin-bottom: 10px;
  font-size: 0.9rem;
  color: #6b7570;
}

.sidebar-list li:last-child { margin-bottom: 0; }

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

.content-section {
  margin-bottom: 48px;
}

.content-section h2 {
  border-bottom: 1px solid #E3DFD6;
  padding-bottom: 8px;
  margin-bottom: 16px;
}

.quote-box {
  background-color: #FFFFFF;
  border-left: 3px solid #5C7C6E;
  padding: 16px 20px;
  margin: 20px 0;
  color: #4a5a52;
  font-size: 0.95rem;
  border-radius: 0 4px 4px 0;
}

.quote-box p { margin: 0; }

.content-figure {
  margin: 24px 0;
  background-color: #FFFFFF;
  border: 1px solid #E3DFD6;
  border-radius: 4px;
  overflow: hidden;
}

.content-figure img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.content-figure figcaption {
  padding: 10px 16px;
  font-size: 0.85rem;
  color: #8a938e;
  background-color: #F7F5F0;
  border-top: 1px solid #E3DFD6;
}

.related-links {
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid #E3DFD6;
}

.related-links h2,
.related-links .related-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: #2B3A42;
  margin-bottom: 12px;
}

.related-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.related-list li { margin: 0; }

.related-list a {
  display: block;
  padding: 10px 14px;
  background-color: #FFFFFF;
  border: 1px solid #E3DFD6;
  border-radius: 4px;
  font-size: 0.9rem;
  color: #2B3A42;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.related-list a:hover {
  border-color: #5C7C6E;
  color: #5C7C6E;
}

.related-link-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.related-link-list li { margin: 0; }

.related-link-list a {
  display: block;
  padding: 10px 14px;
  background-color: #FFFFFF;
  border: 1px solid #E3DFD6;
  border-radius: 4px;
  font-size: 0.9rem;
  color: #2B3A42;
}

.related-link-list a:hover {
  border-color: #5C7C6E;
  color: #5C7C6E;
}

.section-block {
  padding: 56px 0;
  border-bottom: 1px solid #E3DFD6;
}

.section-block:last-child { border-bottom: none; }

.section-heading {
  margin-bottom: 20px;
}

.section-no {
  font-family: "Songti SC", "SimSun", "Noto Serif SC", Georgia, serif;
  font-size: 0.9rem;
  font-weight: 700;
  color: #5C7C6E;
  margin-bottom: 4px;
  letter-spacing: 0.05em;
}

.section-heading h2 {
  font-size: 1.6rem;
  margin-bottom: 0;
}

.section-intro {
  font-size: 1rem;
  color: #6b7570;
  max-width: 760px;
  margin-bottom: 24px;
}

.text-link {
  display: inline-block;
  font-size: 0.9rem;
  font-weight: 600;
  color: #5C7C6E;
  border-bottom: 1px solid transparent;
}

.text-link:hover {
  color: #3d5a4d;
  border-bottom-color: #5C7C6E;
}

/* ==========================================================================
   Pages — Home
   ========================================================================== */
.home-main { max-width: 1200px; }

.hero-summary {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
  gap: 48px;
  align-items: center;
  padding: 56px 0 48px;
}

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

.hero-slogan {
  font-size: 0.95rem;
  color: #5C7C6E;
  font-weight: 600;
  margin-bottom: 12px;
  letter-spacing: 0.03em;
}

.hero-text h1 {
  font-size: 2.2rem;
  line-height: 1.3;
  margin-bottom: 16px;
}

.hero-lead {
  font-size: 1.05rem;
  color: #4a5a52;
  max-width: 600px;
  margin-bottom: 24px;
}

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

.btn-primary,
.btn-secondary {
  display: inline-block;
  padding: 10px 24px;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: 4px;
  line-height: 1.5;
  min-height: 44px;
  text-align: center;
}

.btn-primary {
  background-color: #5C7C6E;
  color: #FFFFFF;
  border: 1px solid #5C7C6E;
}

.btn-primary:hover {
  background-color: #3d5a4d;
  border-color: #3d5a4d;
  color: #FFFFFF;
}

.btn-secondary {
  background-color: transparent;
  color: #2B3A42;
  border: 1px solid #5C7C6E;
}

.btn-secondary:hover {
  background-color: #e8ede9;
  color: #2B3A42;
}

.hero-figure {
  margin: 0;
}

.hero-figure img {
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 4px;
  border: 1px solid #E3DFD6;
}

.content-media {
  margin: 24px 0;
  background-color: #FFFFFF;
  border: 1px solid #E3DFD6;
  border-radius: 4px;
  overflow: hidden;
}

.content-media img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.content-media figcaption {
  padding: 10px 16px;
  font-size: 0.85rem;
  color: #8a938e;
  background-color: #F7F5F0;
  border-top: 1px solid #E3DFD6;
}

.content-media-primary {
  margin-top: 0;
}

.content-media-primary img {
  aspect-ratio: 4 / 3;
}

.overview-summary {
  background-color: #FFFFFF;
  border: 1px solid #E3DFD6;
  border-left: 4px solid #5C7C6E;
  padding: 24px 28px;
  border-radius: 4px;
}

.overview-summary p {
  font-size: 1rem;
  color: #2B3A42;
  margin-bottom: 16px;
}

.overview-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.overview-list li {
  padding: 10px 14px;
  background-color: #F7F5F0;
  border-left: 2px solid #5C7C6E;
  font-size: 0.9rem;
  color: #4a5a52;
  border-radius: 0 4px 4px 0;
}

.directory-list {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: directory-counter;
}

.directory-item {
  counter-increment: directory-counter;
  display: flex;
  align-items: flex-start;
  gap: 20px;
  padding: 20px 0;
  border-bottom: 1px solid #E3DFD6;
}

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

.directory-item::before {
  content: counter(directory-counter, decimal-leading-zero);
  font-family: "Songti SC", "SimSun", "Noto Serif SC", Georgia, serif;
  font-size: 1.4rem;
  font-weight: 700;
  color: #5C7C6E;
  line-height: 1.4;
  flex-shrink: 0;
  min-width: 40px;
}

.directory-text { min-width: 0; }

.directory-text h3 {
  font-size: 1.15rem;
  margin-bottom: 4px;
}

.directory-text p {
  font-size: 0.95rem;
  color: #6b7570;
  margin-bottom: 8px;
}

.method-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.method-card {
  background-color: #FFFFFF;
  border: 1px solid #E3DFD6;
  padding: 24px;
  border-radius: 4px;
  border-top: 3px solid #5C7C6E;
}

.method-step {
  font-size: 0.85rem;
  font-weight: 700;
  color: #5C7C6E;
  margin-bottom: 8px;
  letter-spacing: 0.04em;
}

.method-card h3 {
  font-size: 1.1rem;
  margin-bottom: 8px;
}

.method-card p {
  font-size: 0.9rem;
  color: #6b7570;
  margin-bottom: 12px;
}

.faq-summary-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.faq-summary-item {
  background-color: #FFFFFF;
  border: 1px solid #E3DFD6;
  padding: 20px 24px;
  border-radius: 4px;
}

.faq-summary-item h3 {
  font-size: 1rem;
  margin-bottom: 8px;
}

.faq-summary-item p {
  font-size: 0.9rem;
  color: #6b7570;
  margin-bottom: 12px;
}

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

.next-link-card {
  display: block;
  background-color: #FFFFFF;
  border: 1px solid #E3DFD6;
  padding: 20px;
  border-radius: 4px;
  transition: border-color 0.2s ease;
}

.next-link-card:hover { border-color: #5C7C6E; }

.next-link-card h3 {
  font-size: 1rem;
  margin-bottom: 6px;
  color: #2B3A42;
}

.next-link-card p {
  font-size: 0.85rem;
  color: #6b7570;
  margin-bottom: 0;
}

/* ==========================================================================
   Pages — About
   ========================================================================== */
.page-about .layout-shell.sidebar-right {
  grid-template-columns: minmax(0, 1fr) 300px;
}

.page-about .method-card {
  border-top: none;
  border-left: 3px solid #5C7C6E;
}

.work-method-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
  margin-top: 16px;
}

.work-method-grid .method-card {
  margin-bottom: 0;
}

.principle-list {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: principle-counter;
}

.principle-list li {
  counter-increment: principle-counter;
  padding: 16px 0 16px 48px;
  border-bottom: 1px solid #E3DFD6;
  position: relative;
}

.principle-list li::before {
  content: counter(principle-counter, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 16px;
  font-family: "Songti SC", "SimSun", "Noto Serif SC", Georgia, serif;
  font-size: 1.1rem;
  font-weight: 700;
  color: #5C7C6E;
}

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

.method-label {
  font-size: 0.85rem;
  font-weight: 700;
  color: #5C7C6E;
  margin-bottom: 6px;
  letter-spacing: 0.04em;
}

/* ==========================================================================
   Pages — Services
   ========================================================================== */
.page-services .layout-shell.sidebar-left {
  grid-template-columns: 280px minmax(0, 1fr);
}

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

.aside-card {
  background-color: #FFFFFF;
  border: 1px solid #E3DFD6;
  padding: 20px;
  margin-bottom: 20px;
  border-radius: 4px;
}

.aside-title {
  font-family: "Songti SC", "SimSun", "Noto Serif SC", Georgia, serif;
  font-size: 1rem;
  font-weight: 700;
  color: #2B3A42;
  margin-bottom: 12px;
}

.aside-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.aside-list li { margin-bottom: 8px; }

.aside-list li:last-child { margin-bottom: 0; }

.aside-list a {
  display: block;
  padding: 6px 0;
  font-size: 0.9rem;
  color: #4a5a52;
  border-bottom: 1px solid transparent;
}

.aside-list a:hover {
  color: #5C7C6E;
  border-bottom-color: #E3DFD6;
}

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

.content-area .content-section {
  scroll-margin-top: 80px;
}

.section-desc {
  font-size: 0.95rem;
  color: #6b7570;
  margin-bottom: 16px;
}

.catalog-table-wrap {
  overflow-x: auto;
  margin-bottom: 24px;
}

.catalog-table {
  width: 100%;
  border: 1px solid #E3DFD6;
  background-color: #FFFFFF;
}

.catalog-table thead th {
  background-color: #eef1ee;
  color: #2B3A42;
  font-weight: 600;
  text-align: left;
  padding: 12px 16px;
  font-size: 0.9rem;
  border-bottom: 1px solid #E3DFD6;
}

.catalog-table tbody td {
  padding: 12px 16px;
  font-size: 0.9rem;
  color: #4a5a52;
  border-bottom: 1px solid #E3DFD6;
  vertical-align: top;
}

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

.catalog-table tbody tr:hover { background-color: #faf9f6; }

.scenario-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.scenario-list li {
  padding: 14px 16px;
  background-color: #FFFFFF;
  border: 1px solid #E3DFD6;
  border-left: 3px solid #5C7C6E;
  font-size: 0.9rem;
  color: #4a5a52;
  border-radius: 0 4px 4px 0;
}

.boundary-box {
  background-color: #FFFFFF;
  border: 1px solid #E3DFD6;
  border-left: 4px solid #5C7C6E;
  padding: 20px 24px;
  border-radius: 4px;
}

.boundary-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.boundary-list li {
  padding: 8px 0 8px 24px;
  position: relative;
  font-size: 0.9rem;
  color: #4a5a52;
  border-bottom: 1px solid #F0EDE7;
}

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

.boundary-list li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: #5C7C6E;
}

/* ==========================================================================
   Pages — Process
   ========================================================================== */
.page-process .layout-shell {
  grid-template-columns: minmax(0, 1fr) 300px;
}

.process-overview {
  margin-bottom: 48px;
}

.process-figure {
  margin: 24px 0;
  background-color: #FFFFFF;
  border: 1px solid #E3DFD6;
  border-radius: 4px;
  overflow: hidden;
}

.process-figure img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.process-figure figcaption {
  padding: 10px 16px;
  font-size: 0.85rem;
  color: #8a938e;
  background-color: #F7F5F0;
  border-top: 1px solid #E3DFD6;
}

.process-stage {
  margin-bottom: 48px;
  padding-left: 24px;
  border-left: 3px solid #E3DFD6;
}

.process-stage h2 {
  font-size: 1.4rem;
  margin-bottom: 8px;
  position: relative;
}

.process-stage > p {
  font-size: 0.95rem;
  color: #6b7570;
  margin-bottom: 20px;
}

.stage-detail {
  margin-bottom: 16px;
}

.stage-detail h3 {
  font-size: 1rem;
  margin-bottom: 6px;
}

.stage-detail ul {
  margin-bottom: 0;
  font-size: 0.9rem;
  color: #4a5a52;
}

.stage-output {
  background-color: #FFFFFF;
  border: 1px solid #E3DFD6;
  border-left: 3px solid #5C7C6E;
  padding: 12px 16px;
  margin-top: 16px;
  border-radius: 0 4px 4px 0;
}

.stage-output p {
  font-size: 0.9rem;
  color: #4a5a52;
  margin-bottom: 0;
}

.delivery-standard {
  background-color: #FFFFFF;
  border: 1px solid #E3DFD6;
  padding: 24px;
  margin-top: 32px;
  border-radius: 4px;
}

.delivery-standard h2 {
  font-size: 1.3rem;
  margin-bottom: 12px;
}

.delivery-standard > p {
  font-size: 0.95rem;
  color: #6b7570;
  margin-bottom: 16px;
}

.delivery-standard ul {
  margin: 0;
  padding-left: 1.4em;
  font-size: 0.9rem;
  color: #4a5a52;
}

.sidebar-block {
  background-color: #FFFFFF;
  border: 1px solid #E3DFD6;
  padding: 20px;
  border-radius: 4px;
  position: sticky;
  top: 84px;
}

.sidebar-block .sidebar-title {
  font-size: 1rem;
  font-weight: 700;
  color: #2B3A42;
  margin-bottom: 12px;
}

.sidebar-block .sidebar-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.sidebar-block .sidebar-list li {
  margin-bottom: 4px;
}

.sidebar-block .sidebar-list a {
  display: block;
  padding: 6px 0;
  font-size: 0.9rem;
  color: #4a5a52;
  border-bottom: 1px solid #F0EDE7;
}

.sidebar-block .sidebar-list a:hover {
  color: #5C7C6E;
}

/* ==========================================================================
   Pages — FAQ
   ========================================================================== */
.page-faq .layout-shell.sidebar-right {
  grid-template-columns: minmax(0, 1fr) 300px;
}

.faq-section {
  margin-bottom: 40px;
}

.faq-section h2 {
  font-size: 1.3rem;
  border-bottom: 1px solid #E3DFD6;
  padding-bottom: 8px;
  margin-bottom: 16px;
  scroll-margin-top: 80px;
}

.faq-list {
  border-top: 1px solid #E3DFD6;
}

.faq-item {
  border-bottom: 1px solid #E3DFD6;
  padding: 16px 0;
}

.faq-item summary {
  font-size: 1rem;
  font-weight: 600;
  color: #2B3A42;
  cursor: pointer;
  list-style: none;
  padding: 4px 0;
  position: relative;
  padding-right: 32px;
  min-height: 44px;
  display: flex;
  align-items: center;
}

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

.faq-item summary::after {
  content: "+";
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.4rem;
  color: #5C7C6E;
  font-weight: 400;
  transition: transform 0.2s ease;
}

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

.faq-item .faq-answer {
  padding: 12px 0 4px;
  font-size: 0.92rem;
  color: #4a5a52;
}

.faq-item .faq-answer p { margin-bottom: 0.8em; }
.faq-item .faq-answer p:last-child { margin-bottom: 0; }

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

.sidebar-figure {
  margin: 0 0 20px;
  background-color: #FFFFFF;
  border: 1px solid #E3DFD6;
  border-radius: 4px;
  overflow: hidden;
}

.sidebar-figure img {
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.sidebar-nav-block {
  background-color: #FFFFFF;
  border: 1px solid #E3DFD6;
  padding: 20px;
  margin-bottom: 20px;
  border-radius: 4px;
}

.sidebar-nav-block .sidebar-title {
  font-size: 1rem;
  font-weight: 700;
  color: #2B3A42;
  margin-bottom: 12px;
}

.sidebar-nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.sidebar-nav-list li { margin-bottom: 4px; }

.sidebar-nav-list a {
  display: block;
  padding: 6px 0;
  font-size: 0.9rem;
  color: #4a5a52;
  border-bottom: 1px solid #F0EDE7;
}

.sidebar-nav-list a:hover { color: #5C7C6E; }

/* ==========================================================================
   Pages — Contact
   ========================================================================== */
.page-contact .page-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 40px;
  padding: 24px 0 0;
  align-items: start;
}

.page-contact .sidebar-right { min-width: 0; }

.aside-block {
  background-color: #FFFFFF;
  border: 1px solid #E3DFD6;
  padding: 20px;
  margin-bottom: 20px;
  border-radius: 4px;
}

.aside-block h2 {
  font-size: 1.05rem;
  margin-bottom: 12px;
}

.aside-links {
  list-style: none;
  margin: 0;
  padding: 0;
}

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

.aside-links a {
  font-size: 0.9rem;
  color: #4a5a52;
}

.aside-links a:hover { color: #5C7C6E; }

.aside-figure {
  margin: 0;
  background-color: #FFFFFF;
  border: 1px solid #E3DFD6;
  border-radius: 4px;
  overflow: hidden;
}

.aside-figure img {
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.aside-figure figcaption {
  padding: 10px 16px;
  font-size: 0.85rem;
  color: #8a938e;
  background-color: #F7F5F0;
  border-top: 1px solid #E3DFD6;
}

.contact-methods {
  margin-bottom: 40px;
}

.contact-methods h2,
.preparation h2,
.follow-up h2 {
  font-size: 1.3rem;
  border-bottom: 1px solid #E3DFD6;
  padding-bottom: 8px;
  margin-bottom: 16px;
}

.contact-methods p,
.follow-up p {
  font-size: 0.95rem;
  color: #4a5a52;
}

.preparation-list {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: prep-counter;
}

.preparation-list li {
  counter-increment: prep-counter;
  padding: 16px 0 16px 48px;
  border-bottom: 1px solid #E3DFD6;
  position: relative;
}

.preparation-list li::before {
  content: counter(prep-counter, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 16px;
  font-family: "Songti SC", "SimSun", "Noto Serif SC", Georgia, serif;
  font-size: 1.1rem;
  font-weight: 700;
  color: #5C7C6E;
}

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

.preparation-list h3 {
  font-size: 1rem;
  margin-bottom: 4px;
}

.preparation-list p {
  font-size: 0.9rem;
  color: #6b7570;
  margin-bottom: 0;
}

/* ==========================================================================
   Pages — 404
   ========================================================================== */
.error-main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.error-section {
  text-align: center;
  padding: 80px 24px;
  max-width: 560px;
  margin: 0 auto;
}

.error-code {
  font-family: "Songti SC", "SimSun", "Noto Serif SC", Georgia, serif;
  font-size: 4rem;
  font-weight: 700;
  color: #5C7C6E;
  margin-bottom: 8px;
  line-height: 1.2;
}

.error-section h1 {
  font-size: 1.6rem;
  margin-bottom: 12px;
}

.error-desc {
  font-size: 1rem;
  color: #6b7570;
  margin-bottom: 24px;
}

.error-link {
  display: inline-block;
  padding: 10px 24px;
  background-color: #5C7C6E;
  color: #FFFFFF;
  border-radius: 4px;
  font-size: 0.95rem;
  font-weight: 600;
  min-height: 44px;
  line-height: 1.5;
}

.error-link:hover {
  background-color: #3d5a4d;
  color: #FFFFFF;
}

/* ==========================================================================
   Responsive — 768px breakpoint
   ========================================================================== */
@media (max-width: 768px) {
  .header-inner {
    padding: 0 16px;
    height: 60px;
  }

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    background-color: #FFFFFF;
    border-bottom: 1px solid #E3DFD6;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
  }

  .site-nav .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 8px 16px;
    gap: 0;
  }

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

  .site-nav .nav-list li { margin: 0; }

  .site-nav .nav-link {
    display: block;
    padding: 12px 0;
    border-bottom: 1px solid #F0EDE7;
    border-bottom-color: #F0EDE7;
    font-size: 1rem;
  }

  .site-nav .nav-link.is-current {
    border-bottom-color: #F0EDE7;
    color: #5C7C6E;
  }

  .site-nav .nav-list li:last-child .nav-link {
    border-bottom: none;
  }

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

  .site-footer {
    margin-top: 40px;
  }

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

  .footer-bottom {
    padding: 16px;
  }

  .breadcrumb-inner {
    padding: 10px 16px;
  }

  /* Home */
  .hero-summary {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 32px 0 32px;
  }

  .hero-text h1 {
    font-size: 1.7rem;
  }

  .hero-figure {
    order: 2;
  }

  .content-media-primary {
    margin-top: 0;
  }

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

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

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

  .next-links {
    grid-template-columns: 1fr;
  }

  .section-block {
    padding: 40px 0;
  }

  /* Inner pages */
  .page-title-block,
  .page-title-area {
    padding: 24px 0 4px;
  }

  .page-header .page-title {
    font-size: 1.6rem;
  }

  .layout-shell,
  .layout-shell.sidebar-right,
  .layout-shell.sidebar-left {
    grid-template-columns: 1fr;
    gap: 24px;
    padding-top: 16px;
  }

  .page-about .layout-shell.sidebar-right,
  .page-services .layout-shell.sidebar-left,
  .page-faq .layout-shell.sidebar-right {
    grid-template-columns: 1fr;
  }

  .page-services .page-aside {
    order: 2;
  }

  .page-about .sidebar-info {
    order: 2;
  }

  .page-faq .sidebar {
    order: 2;
  }

  .page-process .layout-shell {
    grid-template-columns: 1fr;
  }

  .page-process .sidebar {
    order: 2;
  }

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

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

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

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

  .process-stage {
    padding-left: 16px;
  }

  .sidebar-block {
    position: static;
  }

  .page-contact .page-layout {
    grid-template-columns: 1fr;
    gap: 24px;
    padding-top: 16px;
  }

  .page-contact .sidebar-right {
    order: 2;
  }

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

  .catalog-table {
    min-width: 560px;
  }

  .error-section {
    padding: 48px 16px;
  }

  .error-code {
    font-size: 3rem;
  }
}