/* =============================================
   CSS Variables (Design Tokens)
   ============================================= */
:root {
  /* Colors */
  --color-brand-blue: #1571DA;
  --color-white: #FFFFFF;
  --color-black: #000000;
  --color-grey: #CCCCCC;
  --color-dark-grey: #333333;
  --color-background: #F5F5F5;
  --color-font-secondary: #999999;
  --color-required: #F57C00;

  /* Typography */
  --font-family: 'Noto Sans JP', sans-serif;
  --font-weight-regular: 400;
  --font-weight-bold: 700;

  /* Font Sizes */
  --font-size-h1: 36px;
  --font-size-h2: 32px;
  --font-size-h3: 28px;
  --font-size-h4: 20px;
  --font-size-subtitle: 18px;
  --font-size-body: 16px;
  --font-size-nav: 15px;
  --font-size-caption: 12px;

  /* Line Heights */
  --line-height-normal: 1;
  --line-height-relaxed: 1.8;

  /* Spacing */
  --max-width: 1400px;
  --content-width: 1080px;
  --header-height: 80px;
}

/* =============================================
   Reset & Base Styles
   ============================================= */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
}

body {
  font-family: var(--font-family);
  font-weight: var(--font-weight-regular);
  color: var(--color-black);
  line-height: var(--line-height-relaxed);
  background-color: var(--color-white);
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
}

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

/* =============================================
   Utility Classes
   ============================================= */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 32px;
}

.content-container {
  max-width: var(--content-width);
  margin: 0 auto;
}

.text-center {
  text-align: center;
}

.text-blue {
  color: var(--color-brand-blue);
}

.text-secondary {
  color: var(--color-font-secondary);
}

/* =============================================
   Button Styles
   ============================================= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-family);
  font-weight: var(--font-weight-bold);
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.3s ease;
  text-align: center;
  border: none;
}

/* Button Types */
.btn-primary {
  background-color: var(--color-brand-blue);
  color: var(--color-white);
  border: 1px solid var(--color-brand-blue);
}

.btn-primary:hover {
  background-color: #1260b8;
  border-color: #1260b8;
}

.btn-outline {
  background-color: var(--color-white);
  color: var(--color-brand-blue);
  border: 1px solid var(--color-brand-blue);
}

.btn-outline:hover {
  background-color: var(--color-brand-blue);
  color: var(--color-white);
}

/* Button Sizes */
.btn-small {
  height: 50px;
  padding: 11px 18px;
  font-size: var(--font-size-nav);
}

.btn-medium {
  height: 60px;
  width: 300px;
  font-size: var(--font-size-body);
}

.btn-large {
  height: 80px;
  width: 500px;
  font-size: var(--font-size-h4);
}

/* =============================================
   Header Styles
   ============================================= */
.header {
  width: 100%;
  height: var(--header-height);
  background-color: var(--color-white);
  position: relative;
  z-index: 1000;
}

.header-inner {
  max-width: var(--max-width);
  height: 100%;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 32px;
}

/* Logo */
.logo {
  height: 90px;
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.logo-image {
  height: 100%;
  width: auto;
  object-fit: contain;
}

.logo-text {
  font-family: 'Roboto', sans-serif;
  font-size: 14px;
  color: var(--color-dark-grey);
  letter-spacing: 7px;
}

/* Navigation */
.nav {
  flex: 1;
  display: flex;
  justify-content: center;
}

.nav-list {
  display: flex;
  gap: 24px;
  align-items: flex-start;
}

.nav-item {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 25px;
}

.nav-item::before {
  content: '';
  width: 100%;
  height: 4px;
  background-color: var(--color-white);
  transition: background-color 0.3s ease;
}

.nav-item.active::before {
  background-color: var(--color-brand-blue);
}

.nav-item a {
  font-size: var(--font-size-nav);
  font-weight: var(--font-weight-bold);
  color: var(--color-black);
  display: flex;
  align-items: center;
  white-space: nowrap;
}

.nav-item.active a {
  color: var(--color-brand-blue);
}

.nav-item:hover::before {
  background-color: var(--color-brand-blue);
}

.nav-item:hover a {
  color: var(--color-brand-blue);
}

.nav-item .material-icons {
  font-size: 18px;
}

/* Header Right */
.header-right {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-shrink: 0;
}

.phone-info {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
}

.phone-number {
  display: flex;
  align-items: center;
  gap: 4px;
}

.phone-icon {
  width: 16px;
  height: auto;
}

.phone-text {
  font-size: var(--font-size-subtitle);
  font-weight: var(--font-weight-bold);
  color: var(--color-dark-grey);
}

.phone-hours {
  font-size: var(--font-size-caption);
  font-weight: var(--font-weight-bold);
  color: var(--color-dark-grey);
}

.header-buttons {
  display: flex;
  gap: 8px;
}

/* =============================================
   Hamburger Menu & Mobile Navigation
   ============================================= */
.hamburger-btn {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.hamburger-btn span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-black);
  transition: 0.3s;
}

.mobile-nav {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--color-white);
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  z-index: 100;
}

.mobile-nav.active {
  display: block;
}

.mobile-nav-list {
  list-style: none;
  padding: 16px 0;
  margin: 0;
}

.mobile-nav-list li a {
  display: block;
  padding: 12px 24px;
  color: var(--color-black);
  text-decoration: none;
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-nav);
}

.mobile-nav-list li a:hover {
  background-color: var(--color-background);
  color: var(--color-brand-blue);
}

/* =============================================
   Top Area Styles
   ============================================= */
.top-area {
  width: 100%;
  min-height: 250px;
  background-color: var(--color-background);
  position: relative;
}

.top-area-inner {
  max-width: var(--max-width);
  height: 100%;
  margin: 0 auto;
  position: relative;
  padding: 48px 32px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

/* Breadcrumb */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: var(--font-size-caption);
  font-weight: var(--font-weight-bold);
}

.breadcrumb a {
  color: var(--color-brand-blue);
}

.breadcrumb a:hover {
  text-decoration: underline;
}

.breadcrumb-separator {
  color: var(--color-black);
}

.breadcrumb-current {
  color: var(--color-black);
}

/* Top Area Content */
.top-area-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  text-align: center;
}

.page-title {
  font-size: var(--font-size-h1);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-normal);
}

.page-description {
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-regular);
  line-height: var(--line-height-relaxed);
}

/* =============================================
   Main Content Styles
   ============================================= */
.main-content {
  padding: 80px 0;
}

.main-content-inner {
  max-width: var(--content-width);
  margin: 0 auto;
}

/* =============================================
   Filter Section Styles
   ============================================= */
.filter-section {
  padding: 40px 0;
  max-width: var(--content-width);
  margin: 0 auto;
}

.filter-row {
  display: flex;
  align-items: center;
  padding: 16px 0;
  border-top: 1px solid var(--color-grey);
  border-bottom: 1px solid var(--color-grey);
}

.filter-label {
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-bold);
  min-width: 100px;
}

.filter-options {
  display: flex;
  gap: 40px;
}

.filter-option {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
}

.filter-checkbox {
  width: 17px;
  height: 17px;
  border: 1px solid var(--color-black);
  border-radius: 3px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-white);
}

.filter-checkbox.checked {
  background-color: var(--color-brand-blue);
  border-color: var(--color-brand-blue);
}

.filter-checkbox.checked::after {
  content: '';
  width: 10px;
  height: 7px;
  border-left: 2px solid var(--color-white);
  border-bottom: 2px solid var(--color-white);
  transform: rotate(-45deg);
  margin-bottom: 2px;
}

.filter-text {
  font-size: var(--font-size-body);
}

/* =============================================
   News List Styles
   ============================================= */
.news-list {
  max-width: var(--content-width);
  margin: 0 auto;
}

.news-item {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 16px 0;
  border-bottom: 1px solid var(--color-grey);
}

.news-item:first-child {
  border-top: 1px solid var(--color-black);
}

.news-date {
  font-size: var(--font-size-subtitle);
  font-weight: var(--font-weight-bold);
  white-space: nowrap;
}

.news-category {
  background-color: var(--color-background);
  padding: 4px 24px;
  font-size: var(--font-size-subtitle);
  color: var(--color-font-secondary);
  white-space: nowrap;
}

.news-title {
  font-size: var(--font-size-subtitle);
  font-weight: var(--font-weight-bold);
  color: var(--color-brand-blue);
}

.news-title:hover {
  text-decoration: underline;
}

/* =============================================
   Pagination Styles
   ============================================= */
.pagination {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-top: 60px;
}

.pagination-item {
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-brand-blue);
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-bold);
  color: var(--color-brand-blue);
  transition: all 0.3s ease;
}

.pagination-item:hover,
.pagination-item.active {
  background-color: var(--color-brand-blue);
  color: var(--color-white);
}

.pagination-arrow {
  border: 1px solid var(--color-brand-blue);
}

.pagination-arrow svg {
  width: 10px;
  height: 10px;
}

/* =============================================
   CTA Styles
   ============================================= */
.cta {
  width: 100%;
  background-color: var(--color-background);
}

.cta-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 56px 32px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
}

.cta-header {
  text-align: center;
}

.cta-label {
  display: block;
  font-size: var(--font-size-h4);
  font-weight: var(--font-weight-bold);
  margin-bottom: 8px;
}

.cta-title {
  font-size: var(--font-size-h2);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-normal);
}

/* Phone Row */
.cta-phone-row {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
  justify-content: center;
}

.cta-phone-label {
  font-size: var(--font-size-subtitle);
  font-weight: var(--font-weight-bold);
}

.cta-phone-number {
  display: flex;
  align-items: center;
  gap: 8px;
}

.cta-phone-icon {
  width: 16px;
  height: auto;
}

.phone-number-text {
  font-size: var(--font-size-h2);
  font-weight: var(--font-weight-bold);
}

.cta-phone-hours {
  font-size: var(--font-size-caption);
  font-weight: var(--font-weight-bold);
}

.cta-divider {
  width: 1px;
  height: 30px;
  background-color: var(--color-grey);
}

.cta-faq-link {
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-bold);
  color: var(--color-brand-blue);
}

.cta-faq-link:hover {
  text-decoration: underline;
}

/* Download Box */
.cta-download-box {
  width: 100%;
  max-width: 960px;
  border: 1px solid var(--color-grey);
  border-radius: 8px;
  background-color: var(--color-white);
  padding: 30px 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.cta-download-left {
  display: flex;
  align-items: center;
  gap: 16px;
}

.free-badge {
  width: 60px;
  height: 60px;
  border: 2px solid var(--color-black);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.free-badge span {
  font-size: var(--font-size-subtitle);
  font-weight: var(--font-weight-bold);
}

.cta-download-text {
  font-size: var(--font-size-subtitle);
  font-weight: var(--font-weight-bold);
}

/* =============================================
   Related Links Section
   ============================================= */
.related-section {
  padding: 80px 0;
  max-width: var(--content-width);
  margin: 0 auto;
}

.related-header {
  text-align: center;
  margin-bottom: 40px;
}

.related-subtitle {
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-bold);
  margin-bottom: 8px;
}

.related-title {
  font-size: var(--font-size-h3);
  font-weight: var(--font-weight-bold);
}

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

.related-link {
  display: flex;
  align-items: center;
  height: 100px;
  padding: 0 40px;
  border: 1px solid var(--color-grey);
  border-radius: 8px;
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-bold);
  color: var(--color-brand-blue);
  transition: all 0.3s ease;
}

.related-link:hover {
  background-color: var(--color-background);
}

/* =============================================
   Footer Styles
   ============================================= */
.footer {
  width: 100%;
  background-color: var(--color-dark-grey);
  color: var(--color-white);
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 64px 160px;
  display: flex;
  justify-content: space-between;
  gap: 146px;
}

/* Company Info */
.footer-company {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-logo {
  height: 80px;
  display: flex;
  align-items: center;
}

.footer-logo-image {
  height: 100%;
  width: auto;
  object-fit: contain;
}

.footer-logo-text {
  font-size: var(--font-size-body);
  color: var(--color-font-secondary);
}

.footer-address {
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-regular);
  line-height: var(--line-height-relaxed);
  max-width: 353px;
}

.footer-copyright {
  font-size: var(--font-size-caption);
  font-weight: var(--font-weight-regular);
}

/* Footer Navigation */
.footer-nav {
  display: flex;
  gap: 40px;
}

.footer-nav-column {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.footer-nav-column a {
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-bold);
  color: var(--color-white);
  transition: opacity 0.3s ease;
}

.footer-nav-column a:hover {
  opacity: 0.7;
}

/* =============================================
   Article Content Styles
   ============================================= */
.article-content {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 80px 0;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 24px;
  margin-bottom: 24px;
}

.article-text {
  font-size: var(--font-size-subtitle);
  line-height: var(--line-height-relaxed);
  margin-bottom: 40px;
}

.article-image {
  width: 100%;
  height: 400px;
  background-color: var(--color-grey);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 8px;
}

.article-image-caption {
  font-size: var(--font-size-caption);
  font-weight: var(--font-weight-bold);
  color: var(--color-font-secondary);
  text-align: center;
}

/* Share Section */
.share-section {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 40px;
  border: 1px solid var(--color-grey);
  border-radius: 8px;
  display: flex;
  align-items: center;
  gap: 24px;
}

.share-label {
  font-size: var(--font-size-subtitle);
  font-weight: var(--font-weight-bold);
}

.share-buttons {
  display: flex;
  gap: 16px;
}

.share-button {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* =============================================
   Two Column Layout (Article with Sidebar)
   ============================================= */
.two-column-layout {
  display: flex;
  gap: 60px;
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 80px 0;
}

.main-column {
  flex: 1;
  min-width: 0;
}

.sidebar {
  width: 300px;
  flex-shrink: 0;
}

/* Table of Contents */
.toc {
  position: sticky;
  top: 100px;
  background-color: var(--color-background);
  padding: 24px;
  border-radius: 8px;
}

.toc-title {
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-bold);
  margin-bottom: 16px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--color-grey);
}

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

.toc-item a {
  font-size: var(--font-size-caption);
  color: var(--color-brand-blue);
  display: block;
  padding-left: 16px;
  border-left: 2px solid transparent;
}

.toc-item a:hover,
.toc-item.active a {
  border-left-color: var(--color-brand-blue);
}

/* =============================================
   Section Content Styles
   ============================================= */
.section-block {
  margin-bottom: 60px;
}

.section-heading {
  font-size: var(--font-size-h4);
  font-weight: var(--font-weight-bold);
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--color-brand-blue);
}

.section-text {
  font-size: var(--font-size-body);
  line-height: var(--line-height-relaxed);
  margin-bottom: 24px;
}

.section-image {
  width: 100%;
  height: 300px;
  background-color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  padding: 20px;
}

.section-image-logo {
  max-height: 100%;
  max-width: 100%;
  object-fit: contain;
}

.section-image-photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

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

.check-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: var(--font-size-body);
}

.check-icon {
  width: 20px;
  height: 20px;
  background-color: var(--color-brand-blue);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 4px;
}

.check-icon::after {
  content: '';
  width: 8px;
  height: 5px;
  border-left: 2px solid var(--color-white);
  border-bottom: 2px solid var(--color-white);
  transform: rotate(-45deg);
  margin-bottom: 2px;
}

/* =============================================
   Form Styles
   ============================================= */
.form-section {
  background-color: var(--color-background);
  padding: 40px;
  border-radius: 8px;
}

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

.form-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-bold);
  margin-bottom: 8px;
}

.required-badge {
  background-color: var(--color-required);
  color: var(--color-white);
  font-size: var(--font-size-caption);
  padding: 2px 8px;
  border-radius: 2px;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 12px 16px;
  font-size: var(--font-size-body);
  font-family: var(--font-family);
  border: 1px solid var(--color-grey);
  border-radius: 4px;
  background-color: var(--color-white);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-brand-blue);
}

.form-textarea {
  min-height: 120px;
  resize: vertical;
}

.form-checkbox-group {
  display: flex;
  align-items: center;
  gap: 8px;
}

.form-checkbox {
  width: 20px;
  height: 20px;
}

.form-submit {
  width: 100%;
  margin-top: 24px;
}

/* =============================================
   Download Page Layout
   ============================================= */
.download-layout {
  display: flex;
  gap: 60px;
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 80px 0;
}

.download-info {
  flex: 1;
}

.download-form {
  width: 480px;
  flex-shrink: 0;
}

.download-preview {
  width: 100%;
  height: 300px;
  background-color: var(--color-grey);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
}

.download-title {
  font-size: var(--font-size-h4);
  font-weight: var(--font-weight-bold);
  margin-bottom: 16px;
}

.download-description {
  font-size: var(--font-size-body);
  line-height: var(--line-height-relaxed);
}

/* =============================================
   Feature Cards
   ============================================= */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 60px;
}

.section-block .feature-grid:last-child {
  margin-bottom: 0;
}

/* 代表メッセージ */
.ceo-message {
  display: flex;
  gap: 40px;
  align-items: flex-start;
}

.ceo-photos {
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  gap: 24px;
  width: 200px;
}

.ceo-photo-item {
  text-align: center;
}

.ceo-photo {
  width: 200px;
  height: 240px;
  object-fit: cover;
  border-radius: 8px;
  background-color: var(--color-grey);
}

.ceo-name {
  margin-top: 12px;
  font-size: 14px;
  font-weight: 700;
  color: var(--color-black);
}

.ceo-message-text {
  flex: 1;
}

.feature-card {
  border: 1px solid var(--color-grey);
  border-radius: 8px;
  overflow: hidden;
}

.feature-card-image {
  width: 100%;
  height: 280px;
  background-color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 12px;
}

.feature-card-logo {
  max-height: 100%;
  max-width: 100%;
  object-fit: contain;
}

.feature-card-content {
  padding: 20px;
}

.feature-card-title {
  font-size: var(--font-size-subtitle);
  font-weight: var(--font-weight-bold);
  margin-bottom: 8px;
}

.feature-card-text {
  font-size: var(--font-size-caption);
  color: var(--color-font-secondary);
  line-height: var(--line-height-relaxed);
}

/* =============================================
   Case Study Styles
   ============================================= */
.case-header {
  display: flex;
  gap: 40px;
  margin-bottom: 60px;
}

.case-image {
  width: 400px;
  height: 300px;
  background-color: var(--color-grey);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.case-info {
  flex: 1;
}

.case-company {
  font-size: var(--font-size-h4);
  font-weight: var(--font-weight-bold);
  margin-bottom: 16px;
}

.case-tags {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
}

.case-tag {
  background-color: var(--color-background);
  padding: 4px 16px;
  font-size: var(--font-size-caption);
}

.case-title {
  font-size: var(--font-size-h3);
  font-weight: var(--font-weight-bold);
  color: var(--color-brand-blue);
}

/* Interview Section */
.interview-block {
  margin-bottom: 40px;
}

.interview-question {
  font-size: var(--font-size-subtitle);
  font-weight: var(--font-weight-bold);
  color: var(--color-brand-blue);
  margin-bottom: 16px;
  padding-left: 16px;
  border-left: 4px solid var(--color-brand-blue);
}

.interview-answer {
  font-size: var(--font-size-body);
  line-height: var(--line-height-relaxed);
}

/* =============================================
   Seminar Styles
   ============================================= */
.seminar-header {
  margin-bottom: 40px;
}

.seminar-badge {
  display: inline-block;
  background-color: var(--color-brand-blue);
  color: var(--color-white);
  padding: 8px 24px;
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-bold);
  margin-bottom: 16px;
}

.seminar-title {
  font-size: var(--font-size-h2);
  font-weight: var(--font-weight-bold);
  margin-bottom: 24px;
}

.seminar-info-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 40px;
}

.seminar-info-table th,
.seminar-info-table td {
  padding: 16px;
  text-align: left;
  border-bottom: 1px solid var(--color-grey);
}

.seminar-info-table th {
  width: 150px;
  font-weight: var(--font-weight-bold);
  background-color: var(--color-background);
}

/* Timetable */
.timetable {
  margin-bottom: 40px;
}

.timetable-title {
  font-size: var(--font-size-h4);
  font-weight: var(--font-weight-bold);
  margin-bottom: 16px;
}

.timetable-item {
  display: flex;
  gap: 24px;
  padding: 16px 0;
  border-bottom: 1px solid var(--color-grey);
}

.timetable-time {
  width: 120px;
  font-weight: var(--font-weight-bold);
  flex-shrink: 0;
}

.timetable-content {
  flex: 1;
}

/* Access Section */
.access-section {
  margin-bottom: 40px;
}

.access-title {
  font-size: var(--font-size-h4);
  font-weight: var(--font-weight-bold);
  margin-bottom: 16px;
}

.access-map {
  width: 100%;
  height: 300px;
  background-color: var(--color-grey);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.access-address {
  font-size: var(--font-size-body);
}

/* =============================================
   Blog Styles
   ============================================= */
.blog-eyecatch {
  width: 100%;
  height: 400px;
  background-color: var(--color-grey);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 40px;
}

.blog-content h2 {
  font-size: var(--font-size-h4);
  font-weight: var(--font-weight-bold);
  margin: 40px 0 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--color-brand-blue);
}

.blog-content h3 {
  font-size: var(--font-size-subtitle);
  font-weight: var(--font-weight-bold);
  margin: 32px 0 12px;
}

.blog-content p {
  font-size: var(--font-size-body);
  line-height: var(--line-height-relaxed);
  margin-bottom: 16px;
}

.blog-content ul,
.blog-content ol {
  margin: 16px 0;
  padding-left: 24px;
}

.blog-content li {
  margin-bottom: 8px;
  list-style: disc;
}

/* Related Articles */
.related-articles {
  margin-top: 60px;
}

.related-articles-title {
  font-size: var(--font-size-h4);
  font-weight: var(--font-weight-bold);
  margin-bottom: 24px;
}

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

.related-article-card {
  border: 1px solid var(--color-grey);
  border-radius: 8px;
  overflow: hidden;
}

.related-article-image {
  width: 100%;
  height: 150px;
  background-color: var(--color-grey);
}

.related-article-content {
  padding: 16px;
}

.related-article-date {
  font-size: var(--font-size-caption);
  color: var(--color-font-secondary);
  margin-bottom: 8px;
}

.related-article-title {
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-bold);
  color: var(--color-brand-blue);
}

/* =============================================
   Estimate Simulator Styles
   ============================================= */
.estimate-form {
  background-color: var(--color-white);
}

.estimate-step {
  margin-bottom: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--color-grey);
}

.estimate-step:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.estimate-step-title {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: var(--font-size-subtitle);
  font-weight: var(--font-weight-bold);
  margin-bottom: 20px;
}

.estimate-step-number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background-color: var(--color-brand-blue);
  color: var(--color-white);
  border-radius: 50%;
  font-size: var(--font-size-body);
  flex-shrink: 0;
}

.estimate-options {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.estimate-options-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.estimate-option {
  display: flex;
  align-items: center;
  padding: 16px 20px;
  border: 2px solid var(--color-grey);
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.estimate-option:hover {
  border-color: var(--color-brand-blue);
  background-color: rgba(21, 113, 218, 0.05);
}

.estimate-option input[type="radio"] {
  width: 20px;
  height: 20px;
  margin-right: 12px;
  accent-color: var(--color-brand-blue);
  flex-shrink: 0;
}

.estimate-option-text {
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-regular);
}

.estimate-option:has(input:checked) {
  border-color: var(--color-brand-blue);
  background-color: rgba(21, 113, 218, 0.1);
}

.estimate-option-small {
  padding: 12px 16px;
  justify-content: center;
}

.estimate-option-small .estimate-option-text {
  font-size: 14px;
}

.estimate-option-small input[type="radio"] {
  margin-right: 8px;
}

/* Estimate Result */
.estimate-result {
  background-color: var(--color-background);
  padding: 40px;
  border-radius: 8px;
  text-align: center;
}

.estimate-result-title {
  font-size: var(--font-size-h4);
  font-weight: var(--font-weight-bold);
  margin-bottom: 16px;
}

.estimate-result-price {
  font-size: var(--font-size-h1);
  font-weight: var(--font-weight-bold);
  color: var(--color-brand-blue);
  margin-bottom: 24px;
}

.estimate-result-notes {
  font-size: var(--font-size-caption);
  color: var(--color-font-secondary);
  margin-bottom: 32px;
  line-height: var(--line-height-relaxed);
}

.estimate-result-notes p {
  margin-bottom: 4px;
}

.estimate-result-cta {
  display: inline-flex;
}

/* Estimate Link Box (for kakaku.html) */
.estimate-link-box {
  background-color: var(--color-background);
  padding: 32px;
  border-radius: 8px;
  text-align: center;
  margin-top: 40px;
}

.estimate-link-text {
  font-size: var(--font-size-subtitle);
  font-weight: var(--font-weight-bold);
  margin-bottom: 20px;
}

/* Top Area Buttons */
.top-area-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  justify-content: center;
}

/* CTA Buttons */
.cta-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  justify-content: center;
}

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

/* Tablet */
@media (max-width: 1399px) {
  .header-inner {
    padding: 0 20px;
  }

  .nav-list {
    gap: 16px;
  }

  .nav-item a {
    font-size: 13px;
  }

  .footer-inner {
    padding: 48px 40px;
    gap: 60px;
  }

  .footer-nav {
    gap: 24px;
  }

  .cta-download-box {
    flex-direction: column;
    text-align: center;
  }

  .cta-download-left {
    flex-direction: column;
  }

  .two-column-layout {
    flex-direction: column;
  }

  .sidebar {
    width: 100%;
  }

  .toc {
    position: static;
  }

  .download-layout {
    flex-direction: column;
  }

  .download-form {
    width: 100%;
  }

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

  .case-header {
    flex-direction: column;
  }

  .case-image {
    width: 100%;
  }

  /* メインコンテンツの左右余白追加 */
  .main-content-inner {
    padding: 0 20px;
  }

  .two-column-layout {
    padding: 80px 20px;
  }
}

/* Mobile */
@media (max-width: 767px) {
  :root {
    --header-height: 60px;
  }

  /* Header Mobile */
  .header-inner {
    padding: 0 16px;
  }

  .nav {
    display: none;
  }

  .phone-info {
    display: none;
  }

  .header-right {
    display: flex;
    align-items: center;
    gap: 8px;
  }

  .hamburger-btn {
    display: flex;
  }

  .header-buttons {
    flex-direction: row;
    gap: 4px;
  }

  .btn-small {
    height: 40px;
    padding: 8px 12px;
    font-size: 12px;
  }

  /* Container overflow fix */
  .container {
    max-width: 100%;
    overflow-x: hidden;
  }

  /* Logo Mobile */
  .logo {
    width: 100px;
    height: 40px;
  }

  .logo-text {
    font-size: 12px;
    letter-spacing: 4px;
  }

  /* Top Area Mobile */
  .top-area {
    height: auto;
    min-height: 200px;
  }

  .top-area-inner {
    padding: 16px;
  }

  .top-area-content {
    position: static;
    transform: none;
    padding-top: 32px;
  }

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

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

  .btn-medium {
    width: 100%;
    max-width: 280px;
    height: 50px;
    font-size: 14px;
  }

  /* Filter Mobile */
  .filter-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }

  .filter-options {
    flex-wrap: wrap;
    gap: 16px;
  }

  /* News List Mobile */
  .news-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  /* Pagination Mobile */
  .pagination {
    gap: 5px;
  }

  .pagination-item {
    width: 40px;
    height: 40px;
    font-size: 14px;
  }

  /* CTA Mobile */
  .cta-inner {
    padding: 32px 16px;
  }

  .cta-title {
    font-size: 20px;
  }

  .btn-large {
    width: 100%;
    max-width: 320px;
    height: 60px;
    font-size: 16px;
  }

  .cta-phone-row {
    flex-direction: column;
    gap: 12px;
  }

  .cta-divider {
    width: 60px;
    height: 1px;
  }

  .phone-number-text {
    font-size: 24px;
  }

  .cta-download-box {
    padding: 20px;
  }

  .cta-download-text {
    font-size: 14px;
  }

  /* Related Links Mobile */
  .related-links {
    grid-template-columns: 1fr;
  }

  /* Footer Mobile */
  .footer-inner {
    padding: 32px 16px;
    flex-direction: column;
    gap: 32px;
  }

  .footer-nav {
    flex-wrap: wrap;
    gap: 24px;
  }

  .footer-nav-column {
    width: calc(50% - 12px);
  }

  .footer-address {
    font-size: 14px;
  }

  /* Article Mobile */
  .article-content {
    padding: 40px 16px;
  }

  .article-meta {
    flex-direction: column;
    align-items: flex-start;
  }

  .share-section {
    flex-direction: column;
    text-align: center;
  }

  /* Feature Grid Mobile */
  .feature-grid {
    grid-template-columns: 1fr;
  }

  /* Related Articles Mobile */
  .related-articles-grid {
    grid-template-columns: 1fr;
  }

  /* CEO Message Mobile */
  .ceo-message {
    flex-direction: column;
    align-items: center;
  }

  .ceo-photos {
    flex-direction: row;
    width: auto;
    gap: 16px;
  }

  .ceo-photo {
    width: 140px;
    height: 168px;
  }

  /* Seminar Mobile */
  .seminar-info-table th,
  .seminar-info-table td {
    display: block;
    width: 100%;
  }

  .seminar-info-table th {
    border-bottom: none;
  }

  .timetable-item {
    flex-direction: column;
    gap: 8px;
  }

  .timetable-time {
    width: 100%;
  }

  /* Estimate Simulator Mobile */
  .estimate-options-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .estimate-step {
    margin-bottom: 24px;
    padding-bottom: 24px;
  }

  .estimate-step-title {
    font-size: 16px;
  }

  .estimate-option {
    padding: 12px 16px;
  }

  .estimate-option-small {
    padding: 10px 12px;
  }

  .estimate-result {
    padding: 24px 16px;
  }

  .estimate-result-price {
    font-size: 24px;
  }

  .estimate-link-box {
    padding: 24px 16px;
  }

  .cta-buttons {
    flex-direction: column;
    align-items: center;
  }

  .cta-buttons .btn-large {
    width: 100%;
    max-width: 320px;
  }

  /* メインコンテンツの左右余白追加 */
  .main-content-inner {
    padding: 0 16px;
  }

  .two-column-layout {
    padding: 40px 16px;
  }
}