/* ==========================================================================
   株式会社Co create 変圧器調達LP - メインスタイルシート (style.css)
   ベースカラー:
     背景: #FFFFFF
     テキスト・主色: #172B4D (ディープネイビー)
     補助背景: #F3F6FA (ライトグレーブルー)
     CTA・アクセント: #C64B14 (インダストリアルオレンジ / ホバー: #A83E0E)
     ボーダー: #E2E8F0
   ========================================================================== */

:root {
  --color-bg-primary: #FFFFFF;
  --color-bg-secondary: #F3F6FA;
  --color-bg-tertiary: #E8EEF5;
  --color-text-main: #172B4D;
  --color-text-muted: #5E6C84;
  --color-text-light: #7A869A;
  --color-cta: #C64B14;
  --color-cta-hover: #A83E0E;
  --color-cta-active: #8C320A;
  --color-border: #E2E8F0;
  --color-border-dark: #CBD5E1;
  --color-success: #059669;
  --color-error: #DC2626;
  --color-error-bg: #FEF2F2;
  
  --font-family-base: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --max-width: 1120px;
  --header-height: 72px;
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --shadow-sm: 0 1px 3px rgba(23, 43, 77, 0.08);
  --shadow-md: 0 4px 12px rgba(23, 43, 77, 0.08);
  --shadow-lg: 0 10px 25px rgba(23, 43, 77, 0.12);
}

/* リセット & 基本設定 */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-family-base);
  color: var(--color-text-main);
  background-color: var(--color-bg-primary);
  line-height: 1.75;
  overflow-x: hidden;
  position: relative;
  word-break: break-word;
}

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

a {
  color: var(--color-text-main);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-cta);
}

button, input, select, textarea {
  font-family: inherit;
  font-size: 1rem;
}

/* フォーカスリング (キーボード操作対応) */
:focus-visible {
  outline: 3px solid var(--color-cta);
  outline-offset: 2px;
}

/* コンテナ */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

.container-narrow {
  max-width: 840px;
}

/* セクション共通 */
.section {
  padding-top: 80px;
  padding-bottom: 80px;
}

.section-bg {
  background-color: var(--color-bg-secondary);
}

.section-header {
  text-align: center;
  margin-bottom: 48px;
}

.section-tag {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--color-cta);
  background-color: rgba(198, 75, 20, 0.08);
  padding: 4px 12px;
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
}

.section-title {
  font-size: 2rem;
  font-weight: 700;
  line-height: 1.35;
  color: var(--color-text-main);
  margin-bottom: 16px;
}

.section-lead {
  font-size: 1.0625rem;
  color: var(--color-text-muted);
  max-width: 760px;
  margin-left: auto;
  margin-right: auto;
}

/* ボタン (CTA) */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 700;
  text-align: center;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
  line-height: 1.4;
  text-decoration: none;
}

.btn-cta {
  background-color: var(--color-cta);
  color: #FFFFFF;
  padding: 16px 36px;
  font-size: 1.125rem;
  box-shadow: 0 4px 14px rgba(198, 75, 20, 0.3);
}

.btn-cta:hover {
  background-color: var(--color-cta-hover);
  color: #FFFFFF;
  box-shadow: 0 6px 18px rgba(198, 75, 20, 0.4);
  transform: translateY(-1px);
}

.btn-cta:active {
  background-color: var(--color-cta-active);
  transform: translateY(0);
}

.btn-header {
  background-color: var(--color-cta);
  color: #FFFFFF;
  padding: 10px 20px;
  font-size: 0.9375rem;
}

.btn-header:hover {
  background-color: var(--color-cta-hover);
  color: #FFFFFF;
}

.btn-sub {
  background-color: #FFFFFF;
  color: var(--color-text-main);
  border: 1px solid var(--color-border-dark);
  padding: 12px 24px;
  font-size: 0.9375rem;
}

.btn-sub:hover {
  background-color: var(--color-bg-secondary);
  border-color: var(--color-text-main);
  color: var(--color-text-main);
}

/* CTA周辺の補足・注記 */
.cta-group {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-top: 32px;
  text-align: center;
}

.cta-subtext {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text-main);
  margin-top: 10px;
}

.cta-note {
  font-size: 0.8125rem;
  color: var(--color-text-light);
  margin-top: 6px;
}

/* 必須条件注記ボックス */
.condition-note-box {
  background-color: #FFFFFF;
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-cta);
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--color-text-muted);
  margin-top: 24px;
}

.condition-note-box strong {
  color: var(--color-text-main);
}

/* ==========================================================================
   1. ヘッダー
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
  height: var(--header-height);
  display: flex;
  align-items: center;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.logo-area {
  display: flex;
  align-items: center;
  gap: 10px;
}

.site-logo {
  font-size: 1.1875rem;
  font-weight: 700;
  color: var(--color-text-main);
  letter-spacing: -0.01em;
  display: flex;
  align-items: center;
  gap: 8px;
}

.site-logo-img {
  height: 44px;
  width: auto;
  max-width: 160px;
  object-fit: contain;
  display: block;
}

.logo-badge {
  font-size: 0.6875rem;
  background-color: var(--color-bg-secondary);
  color: var(--color-text-muted);
  padding: 2px 6px;
  border-radius: 2px;
  border: 1px solid var(--color-border);
  font-weight: normal;
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-list {
  display: flex;
  list-style: none;
  gap: 24px;
}

.nav-link {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-text-main);
  padding: 6px 0;
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background-color: var(--color-cta);
  transition: width var(--transition-fast);
}

.nav-link:hover::after {
  width: 100%;
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  color: var(--color-text-main);
}

/* ==========================================================================
   2. ファーストビュー (Hero)
   ========================================================================== */
.hero-section {
  padding-top: 60px;
  padding-bottom: 72px;
  background: linear-gradient(180deg, #FFFFFF 0%, var(--color-bg-secondary) 100%);
  border-bottom: 1px solid var(--color-border);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 40px;
  align-items: center;
}

.hero-title {
  font-size: 2.375rem;
  font-weight: 800;
  line-height: 1.3;
  color: var(--color-text-main);
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}

.hero-desc {
  font-size: 1.0625rem;
  color: var(--color-text-main);
  margin-bottom: 28px;
  line-height: 1.8;
}

.hero-badges {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 24px;
}

.hero-badge-card {
  display: flex;
  align-items: center;
  gap: 14px;
  background-color: #FFFFFF;
  border: 1px solid var(--color-border);
  padding: 12px 18px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.hero-badge-icon {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  background-color: #FFF7ED;
  color: var(--color-cta);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.125rem;
}

.hero-badge-text {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--color-text-main);
}

.hero-visual-card {
  background-color: #FFFFFF;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 16px;
  box-shadow: var(--shadow-md);
}

/* ==========================================================================
   3. よくあるお困りごと
   ========================================================================== */
.troubles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 36px;
}

.trouble-card {
  background-color: #FFFFFF;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  box-shadow: var(--shadow-sm);
  position: relative;
  display: flex;
  flex-direction: column;
}

.trouble-icon {
  width: 44px;
  height: 44px;
  background-color: #FEF2F2;
  color: var(--color-error);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  font-size: 1.25rem;
}

.trouble-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-text-main);
  line-height: 1.45;
  margin-bottom: 12px;
}

.trouble-desc {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
}

.troubles-conclusion {
  background-color: #FFFFFF;
  border: 2px solid var(--color-cta);
  border-radius: var(--radius-md);
  padding: 24px 32px;
  text-align: center;
  max-width: 860px;
  margin: 0 auto;
}

.troubles-conclusion p {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-text-main);
  line-height: 1.6;
}

/* ==========================================================================
   4. サービスの6つの特徴
   ========================================================================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  background-color: #FFFFFF;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.feature-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.feature-num {
  font-size: 0.8125rem;
  font-weight: 800;
  color: var(--color-cta);
  letter-spacing: 0.05em;
  margin-bottom: 8px;
}

.feature-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text-main);
  margin-bottom: 12px;
  line-height: 1.4;
}

.feature-desc {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  flex-grow: 1;
}

.feature-note {
  font-size: 0.8125rem;
  color: var(--color-text-light);
  margin-top: 12px;
  padding-top: 10px;
  border-top: 1px dashed var(--color-border);
}

/* ==========================================================================
   5. 調達・交換の選択肢 (比較模式図)
   ========================================================================== */
.options-intro {
  background-color: #FFFFFF;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  margin-bottom: 40px;
  box-shadow: var(--shadow-sm);
}

.options-intro-content {
  max-width: 820px;
  margin: 0 auto;
  text-align: center;
}

.options-intro-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text-main);
  margin-bottom: 16px;
}

.options-intro-text {
  font-size: 1.0625rem;
  line-height: 1.8;
  color: var(--color-text-muted);
}

.options-cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 40px;
}

.option-type-card {
  background-color: #FFFFFF;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
  display: flex;
  flex-direction: column;
}

.option-type-card.featured {
  border-color: var(--color-cta);
  border-width: 2px;
  box-shadow: var(--shadow-md);
}

.option-type-badge {
  display: inline-block;
  align-self: flex-start;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  margin-bottom: 10px;
}

.badge-featured {
  background-color: var(--color-cta);
  color: #FFFFFF;
}

.badge-standard {
  background-color: var(--color-bg-secondary);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}

.option-type-title {
  font-size: 1.1875rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--color-text-main);
}

.option-type-desc {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
}

.diagram-container {
  background-color: #FFFFFF;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  margin-bottom: 32px;
}

/* ==========================================================================
   6. 品質と調達体制
   ========================================================================== */
.quality-intro {
  text-align: center;
  max-width: 820px;
  margin: 0 auto 40px auto;
}

.quality-diagram-box {
  background-color: #FFFFFF;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  margin-bottom: 32px;
}

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

.quality-role-card {
  background-color: #FFFFFF;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
}

.role-tag {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-cta);
  letter-spacing: 0.05em;
  margin-bottom: 6px;
}

.role-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-text-main);
  margin-bottom: 10px;
}

.role-desc {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  line-height: 1.65;
}

.quality-footnote {
  text-align: center;
  font-size: 0.8125rem;
  color: var(--color-text-light);
  margin-top: 24px;
}

/* ==========================================================================
   7. 相談から納品まで (フロー)
   ========================================================================== */
.flow-lead-box {
  background-color: #FFFFFF;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  text-align: center;
  max-width: 780px;
  margin: 0 auto 40px auto;
}

.flow-lead-box p {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text-main);
}

.flow-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  max-width: 860px;
  margin: 0 auto;
}

.flow-step-item {
  display: flex;
  align-items: flex-start;
  gap: 24px;
  background-color: #FFFFFF;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  position: relative;
}

.flow-step-num {
  flex-shrink: 0;
  width: 72px;
  height: 72px;
  background-color: var(--color-bg-secondary);
  border: 2px solid var(--color-border-dark);
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.flow-step-num span:first-child {
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
}

.flow-step-num span:last-child {
  font-size: 1.5rem;
  font-weight: 800;
  line-height: 1;
  color: var(--color-text-main);
}

.flow-step-body {
  flex-grow: 1;
}

.flow-step-title {
  font-size: 1.1875rem;
  font-weight: 700;
  color: var(--color-text-main);
  margin-bottom: 6px;
}

.flow-step-desc {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
}

.flow-note {
  text-align: center;
  font-size: 0.8125rem;
  color: var(--color-text-light);
  margin-top: 24px;
}

/* ==========================================================================
   8. よくある質問 (FAQ)
   ========================================================================== */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  max-width: 860px;
  margin: 0 auto;
}

.faq-item {
  background-color: #FFFFFF;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.faq-question-btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 24px;
  background: none;
  border: none;
  text-align: left;
  cursor: pointer;
  font-weight: 700;
  font-size: 1.0625rem;
  color: var(--color-text-main);
  transition: background-color var(--transition-fast);
}

.faq-question-btn:hover {
  background-color: var(--color-bg-secondary);
}

.faq-q-icon {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  background-color: var(--color-text-main);
  color: #FFFFFF;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.875rem;
  font-weight: 800;
}

.faq-q-text {
  flex-grow: 1;
  display: flex;
  align-items: center;
  gap: 12px;
}

.faq-toggle-icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  transition: transform var(--transition-normal);
}

.faq-item.is-open .faq-toggle-icon {
  transform: rotate(180deg);
}

.faq-answer-panel {
  display: none;
  padding: 0 24px 24px 64px;
  border-top: 1px solid var(--color-border);
  background-color: #FAFCFE;
}

.faq-item.is-open .faq-answer-panel {
  display: block;
}

.faq-answer-inner {
  padding-top: 16px;
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.faq-a-icon {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  background-color: var(--color-cta);
  color: #FFFFFF;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.875rem;
  font-weight: 800;
}

.faq-a-text {
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--color-text-main);
}

/* ==========================================================================
   9. お問い合わせフォーム
   ========================================================================== */
.contact-section {
  background-color: var(--color-bg-secondary);
}

.contact-card {
  background-color: #FFFFFF;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 48px;
  box-shadow: var(--shadow-md);
  max-width: 860px;
  margin: 0 auto;
}

.contact-intro {
  margin-bottom: 32px;
  text-align: center;
}

.contact-intro-title {
  font-size: 1.625rem;
  font-weight: 700;
  color: var(--color-text-main);
  margin-bottom: 12px;
}

.contact-intro-desc {
  font-size: 1rem;
  color: var(--color-text-muted);
}

.contact-notice-box {
  background-color: #FFF7ED;
  border: 1px solid #FFEDD5;
  border-radius: var(--radius-md);
  padding: 14px 18px;
  font-size: 0.875rem;
  color: #9A3412;
  margin-bottom: 32px;
  display: flex;
  align-items: center;
  gap: 10px;
}

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

.form-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--color-text-main);
  margin-bottom: 8px;
}

.label-badge-req {
  font-size: 0.6875rem;
  font-weight: 700;
  background-color: var(--color-cta);
  color: #FFFFFF;
  padding: 2px 6px;
  border-radius: 2px;
}

.label-badge-opt {
  font-size: 0.6875rem;
  font-weight: 700;
  background-color: var(--color-bg-secondary);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
  padding: 2px 6px;
  border-radius: 2px;
}

.form-control {
  width: 100%;
  padding: 12px 16px;
  font-size: 1rem;
  color: var(--color-text-main);
  background-color: #FFFFFF;
  border: 1px solid var(--color-border-dark);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-control:focus {
  border-color: var(--color-cta);
  outline: none;
  box-shadow: 0 0 0 3px rgba(198, 75, 20, 0.15);
}

.form-control.has-error {
  border-color: var(--color-error);
  background-color: var(--color-error-bg);
}

.form-error-msg {
  display: none;
  font-size: 0.8125rem;
  color: var(--color-error);
  margin-top: 6px;
  font-weight: 500;
}

.form-error-msg.is-visible {
  display: block;
}

.form-help {
  font-size: 0.8125rem;
  color: var(--color-text-light);
  margin-top: 6px;
}

/* ラジオ・チェックボックス */
.radio-group {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.radio-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 0.9375rem;
  user-select: none;
}

.radio-item:hover {
  background-color: #EBF1F7;
}

.radio-item input[type="radio"] {
  accent-color: var(--color-cta);
  width: 18px;
  height: 18px;
  cursor: pointer;
}

.checkbox-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.9375rem;
  line-height: 1.6;
  cursor: pointer;
}

.checkbox-item input[type="checkbox"] {
  accent-color: var(--color-cta);
  width: 20px;
  height: 20px;
  margin-top: 2px;
  cursor: pointer;
}

.privacy-link {
  color: var(--color-cta);
  text-decoration: underline;
  font-weight: 600;
}

/* 送信ボタンエリア */
.form-submit-area {
  text-align: center;
  margin-top: 36px;
}

.form-submit-btn {
  width: 100%;
  max-width: 420px;
  padding: 18px 24px;
  font-size: 1.1875rem;
}

.form-submit-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none !important;
  box-shadow: none !important;
}

.btn-loading-spinner {
  display: none;
  width: 20px;
  height: 20px;
  border: 3px solid rgba(255, 255, 255, 0.4);
  border-top-color: #FFFFFF;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.form-submit-btn.is-loading .btn-loading-spinner {
  display: inline-block;
}

.form-submit-btn.is-loading .btn-text {
  display: none;
}

/* デモ送信完了モーダル */
.modal-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(23, 43, 77, 0.65);
  backdrop-filter: blur(4px);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.modal-overlay.is-active {
  display: flex;
}

.modal-card {
  background-color: #FFFFFF;
  border-radius: var(--radius-lg);
  padding: 36px;
  max-width: 560px;
  width: 100%;
  box-shadow: var(--shadow-lg);
  position: relative;
  text-align: center;
  animation: modalIn 0.25s ease-out;
}

@keyframes modalIn {
  from { opacity: 0; transform: translateY(12px) scale(0.97); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.modal-icon-wrap {
  width: 60px;
  height: 60px;
  background-color: #EFF6FF;
  color: #2563EB;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px auto;
  font-size: 1.75rem;
}

.modal-title {
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--color-text-main);
  margin-bottom: 12px;
}

.modal-alert-box {
  background-color: #FEF3C7;
  border: 1px solid #FCD34D;
  border-radius: var(--radius-md);
  padding: 14px;
  margin-bottom: 20px;
  text-align: left;
}

.modal-alert-title {
  font-size: 0.9375rem;
  font-weight: 700;
  color: #92400E;
  margin-bottom: 4px;
}

.modal-alert-desc {
  font-size: 0.8125rem;
  color: #78350F;
  line-height: 1.5;
}

.modal-body-text {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: 24px;
  text-align: left;
}

.modal-btn-close {
  min-width: 160px;
}

/* ==========================================================================
   10. 会社情報とフッター
   ========================================================================== */
.site-footer {
  background-color: #0F1D33;
  color: #94A3B8;
  padding-top: 64px;
  padding-bottom: 32px;
  font-size: 0.875rem;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 48px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  margin-bottom: 32px;
}

.footer-company-name {
  font-size: 1.25rem;
  font-weight: 700;
  color: #FFFFFF;
  margin-bottom: 12px;
}

.footer-company-desc {
  font-size: 0.875rem;
  line-height: 1.6;
  color: #94A3B8;
  margin-bottom: 16px;
}

.footer-info-table {
  font-size: 0.8125rem;
  border-collapse: collapse;
}

.footer-info-table th {
  text-align: left;
  padding: 4px 16px 4px 0;
  color: #CBD5E1;
  font-weight: 600;
}

.footer-info-table td {
  padding: 4px 0;
  color: #94A3B8;
}

.footer-nav-title {
  font-size: 0.9375rem;
  font-weight: 700;
  color: #FFFFFF;
  margin-bottom: 16px;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  color: #94A3B8;
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8125rem;
  color: #64748B;
}

.footer-bottom a {
  color: #94A3B8;
  text-decoration: underline;
}

.footer-bottom a:hover {
  color: #FFFFFF;
}