/* ========================================
   LP-A スタイルシート
   サーバー保守切れ対応 ランディングページ

   カラースキーム:
   - メイン: 濃紺系 (#1a365d)
   - アクセント: オレンジ系 (#ed8936)
   - 背景: 白 (#ffffff)
   - テキスト: ダークグレー (#2d3748)

   ブレークポイント:
   - SP: ~767px
   - タブレット: 768px~1023px
   - PC: 1024px~
======================================== */

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

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

body {
  font-family: 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', 'Hiragino Sans', Meiryo, sans-serif;
  font-weight: 400;
  line-height: 1.8;
  color: #2d3748;
  background-color: #ffffff;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img {
  max-width: 100%;
  height: auto;
  vertical-align: middle;
}

a {
  color: #2b6cb0;
  text-decoration: none;
  transition: color 0.3s ease;
}

a:hover {
  color: #ed8936;
}

ul {
  list-style: none;
}

/* ----------------------------------------
   共通レイアウト
---------------------------------------- */
.container {
  width: 100%;
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 20px;
}

/* PC専用の改行 */
.pc-only {
  display: none;
}

/* SP専用の改行 */
.sp-only {
  display: inline;
}

@media (min-width: 768px) {
  .pc-only {
    display: inline;
  }
  .sp-only {
    display: none;
  }
}

/* ----------------------------------------
   セクション見出し共通
---------------------------------------- */
.section-heading {
  font-size: 1.5rem;
  font-weight: 700;
  color: #1a365d;
  text-align: center;
  margin-bottom: 1rem;
  line-height: 1.5;
}

.section-heading-light {
  color: #ffffff;
}

.section-lead {
  font-size: 1rem;
  color: #4a5568;
  text-align: center;
  margin-bottom: 2.5rem;
  line-height: 1.9;
}

.section-lead-light {
  color: rgba(255, 255, 255, 0.9);
}

@media (min-width: 768px) {
  .section-heading {
    font-size: 1.875rem;
  }

  .section-lead {
    font-size: 1.0625rem;
  }
}

/* ----------------------------------------
   ボタン共通
---------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: inherit;
  font-weight: 700;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
  line-height: 1.5;
}

.btn-primary {
  background-color: #ed8936;
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(237, 137, 54, 0.4);
}

.btn-primary:hover {
  background-color: #f6a051;
  color: #ffffff;
  box-shadow: 0 6px 20px rgba(237, 137, 54, 0.5);
  transform: translateY(-2px);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(237, 137, 54, 0.3);
}

.btn-secondary {
  background-color: #e2e8f0;
  color: #2d3748;
}

.btn-secondary:hover {
  background-color: #cbd5e0;
}

.btn-lg {
  font-size: 1.125rem;
  padding: 1rem 2.5rem;
}

.btn-submit {
  display: block;
  width: 100%;
  max-width: 400px;
  margin: 1.5rem auto 0;
  font-size: 1.125rem;
  padding: 1rem 2rem;
}

/* ----------------------------------------
   S1: ファーストビュー（FV）
---------------------------------------- */
.section-fv {
  background: linear-gradient(135deg, #1a365d 0%, #2a4a7f 100%);
  color: #ffffff;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 80px 0 60px;
  position: relative;
  overflow: hidden;
}

/* 背景パターン装飾 */
.section-fv::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -30%;
  width: 80%;
  height: 200%;
  background: radial-gradient(ellipse, rgba(255,255,255,0.03) 0%, transparent 70%);
  pointer-events: none;
}

.fv-content {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  align-items: center;
  position: relative;
  z-index: 1;
}

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

.fv-heading {
  font-size: 1.625rem;
  font-weight: 700;
  line-height: 1.6;
  margin-bottom: 1.5rem;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.fv-subtext {
  font-size: 1rem;
  line-height: 2;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 2rem;
}

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

.fv-cta-note {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.7);
  margin-top: 1rem;
}

/* FV右側のプレースホルダー画像 */
.fv-image {
  width: 100%;
  max-width: 400px;
}

.placeholder-image {
  background-color: rgba(255, 255, 255, 0.08);
  border: 2px dashed rgba(255, 255, 255, 0.2);
  border-radius: 12px;
  padding: 3rem 2rem;
  text-align: center;
  color: rgba(255, 255, 255, 0.4);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
}

.placeholder-image i {
  font-size: 3rem;
}

.placeholder-image span {
  font-size: 0.875rem;
}

.placeholder-image-sm {
  background-color: #e2e8f0;
  border-color: #cbd5e0;
  color: #a0aec0;
  padding: 2rem 1rem;
}

@media (min-width: 768px) {
  .section-fv {
    padding: 100px 0 80px;
  }

  .fv-content {
    flex-direction: row;
    gap: 3rem;
    text-align: left;
  }

  .fv-variant {
    text-align: left;
    flex: 1;
  }

  .fv-heading {
    font-size: 2rem;
  }

  .fv-subtext {
    font-size: 1.0625rem;
  }

  .fv-cta {
    text-align: left;
  }

  .fv-image {
    flex: 0 0 320px;
  }
}

@media (min-width: 1024px) {
  .fv-heading {
    font-size: 2.25rem;
  }

  .fv-subtext {
    font-size: 1.125rem;
  }

  .fv-image {
    flex: 0 0 380px;
  }
}

/* ----------------------------------------
   S2: 課題共感セクション
---------------------------------------- */
.section-problems {
  padding: 4rem 0;
  background-color: #f7fafc;
}

.problem-list {
  max-width: 800px;
  margin: 0 auto 2rem;
}

.problem-item {
  display: flex;
  gap: 1rem;
  padding: 1.25rem;
  margin-bottom: 1rem;
  background-color: #ffffff;
  border-radius: 8px;
  border-left: 4px solid #ed8936;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
  transition: box-shadow 0.3s ease;
}

.problem-item:hover {
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
}

.problem-check {
  flex-shrink: 0;
  color: #a0aec0;
  font-size: 1.25rem;
  padding-top: 0.125rem;
}

.problem-content h3 {
  font-size: 1rem;
  font-weight: 700;
  color: #1a365d;
  margin-bottom: 0.375rem;
  line-height: 1.5;
}

.problem-content p {
  font-size: 0.9375rem;
  color: #4a5568;
  line-height: 1.7;
}

.section-cta-text {
  text-align: center;
  font-size: 1.0625rem;
  font-weight: 700;
  color: #1a365d;
}

@media (min-width: 768px) {
  .section-problems {
    padding: 5rem 0;
  }

  .problem-item {
    padding: 1.5rem;
  }

  .problem-content h3 {
    font-size: 1.0625rem;
  }
}

/* ----------------------------------------
   S3: 解決アプローチセクション
---------------------------------------- */
.section-approach {
  padding: 4rem 0;
  background-color: #ffffff;
}

.steps {
  max-width: 800px;
  margin: 0 auto 2rem;
  position: relative;
}

/* ステップ間の縦線 */
.steps::before {
  content: '';
  position: absolute;
  left: 24px;
  top: 60px;
  bottom: 60px;
  width: 2px;
  background: linear-gradient(to bottom, #ed8936 0%, #2b6cb0 100%);
}

.step-item {
  display: flex;
  gap: 1.5rem;
  margin-bottom: 2rem;
  position: relative;
}

.step-item:last-child {
  margin-bottom: 0;
}

.step-number {
  flex-shrink: 0;
  width: 50px;
  height: 50px;
  background: linear-gradient(135deg, #1a365d 0%, #2a4a7f 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  z-index: 1;
}

.step-number span {
  font-size: 1.25rem;
  font-weight: 700;
  color: #ffffff;
}

.step-content {
  flex: 1;
  padding-top: 0.25rem;
}

.step-content h3 {
  font-size: 1.125rem;
  font-weight: 700;
  color: #1a365d;
  margin-bottom: 0.5rem;
}

.step-content p {
  font-size: 0.9375rem;
  color: #4a5568;
  line-height: 1.8;
}

.steps-note {
  max-width: 800px;
  margin: 0 auto;
  padding: 1.25rem;
  background-color: #f7fafc;
  border-radius: 8px;
}

.steps-note p {
  font-size: 0.875rem;
  color: #718096;
  line-height: 1.7;
}

@media (min-width: 768px) {
  .section-approach {
    padding: 5rem 0;
  }

  .steps::before {
    left: 29px;
  }

  .step-number {
    width: 60px;
    height: 60px;
  }

  .step-number span {
    font-size: 1.5rem;
  }

  .step-content h3 {
    font-size: 1.25rem;
  }

  .step-content p {
    font-size: 1rem;
  }
}

/* ----------------------------------------
   S4: サブCTA（簡易フォーム）セクション
---------------------------------------- */
.section-sub-cta {
  padding: 4rem 0;
  background: linear-gradient(135deg, #1a365d 0%, #2a4a7f 100%);
  color: #ffffff;
}

.form-sub {
  max-width: 560px;
  margin: 0 auto 1.5rem;
  background-color: #ffffff;
  border-radius: 12px;
  padding: 2rem;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
}

@media (min-width: 768px) {
  .section-sub-cta {
    padding: 5rem 0;
  }
}

/* ----------------------------------------
   フォーム共通スタイル
---------------------------------------- */
.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-size: 0.9375rem;
  font-weight: 500;
  color: #2d3748;
  margin-bottom: 0.375rem;
}

.required {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  color: #ffffff;
  background-color: #e53e3e;
  padding: 0.1rem 0.5rem;
  border-radius: 3px;
  margin-left: 0.375rem;
  vertical-align: middle;
}

.optional {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 500;
  color: #718096;
  background-color: #e2e8f0;
  padding: 0.1rem 0.5rem;
  border-radius: 3px;
  margin-left: 0.375rem;
  vertical-align: middle;
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="tel"],
.form-group select,
.form-group textarea {
  width: 100%;
  font-family: inherit;
  font-size: 1rem;
  padding: 0.75rem 1rem;
  border: 2px solid #e2e8f0;
  border-radius: 6px;
  background-color: #ffffff;
  color: #2d3748;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
  -webkit-appearance: none;
  appearance: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: #2b6cb0;
  box-shadow: 0 0 0 3px rgba(43, 108, 176, 0.15);
}

.form-group input.error,
.form-group select.error,
.form-group textarea.error {
  border-color: #e53e3e;
  box-shadow: 0 0 0 3px rgba(229, 62, 62, 0.1);
}

.form-group select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23718096' stroke-width='2' fill='none'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

.form-group ::placeholder {
  color: #a0aec0;
}

.error-message {
  display: block;
  font-size: 0.8125rem;
  color: #e53e3e;
  margin-top: 0.25rem;
  min-height: 1.2em;
}

/* ラジオボタン */
.radio-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 0.375rem;
}

.radio-label {
  display: flex;
  align-items: center;
  gap: 0.375rem;
  cursor: pointer;
  font-size: 0.9375rem;
  color: #2d3748;
  padding: 0.5rem 1rem;
  border: 2px solid #e2e8f0;
  border-radius: 6px;
  transition: all 0.3s ease;
}

.radio-label:hover {
  border-color: #2b6cb0;
}

.radio-label input[type="radio"] {
  width: auto;
  margin: 0;
}

.radio-label input[type="radio"]:checked + span {
  color: #2b6cb0;
  font-weight: 500;
}

.radio-label:has(input[type="radio"]:checked) {
  border-color: #2b6cb0;
  background-color: #ebf8ff;
}

/* フォーム行（PC時に2列） */
.form-row {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.form-group-full {
  width: 100%;
}

@media (min-width: 768px) {
  .form-row {
    flex-direction: row;
    gap: 1.25rem;
  }

  .form-row .form-group {
    flex: 1;
  }
}

/* フォーム補足テキスト */
.form-notes {
  text-align: center;
}

.form-notes p {
  font-size: 0.8125rem;
  color: #718096;
  line-height: 1.7;
}

.form-notes-light p {
  color: rgba(255, 255, 255, 0.7);
}

/* ----------------------------------------
   S5: 対応力・信頼性セクション（改善版: 3つの強み）
---------------------------------------- */
.section-results {
  padding: 4rem 0;
  background-color: #f7fafc;
}

/* 3つの強み */
.strengths {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.strength-item {
  display: flex;
  gap: 1.5rem;
  padding: 2rem;
  background-color: #ffffff;
  border-radius: 12px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
  transition: box-shadow 0.3s ease;
}

.strength-item:hover {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.strength-icon {
  flex-shrink: 0;
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, #1a365d 0%, #2a4a7f 100%);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.strength-icon i {
  font-size: 1.5rem;
  color: #ffffff;
}

.strength-content {
  flex: 1;
}

.strength-content h3 {
  font-size: 1.0625rem;
  font-weight: 700;
  color: #1a365d;
  margin-bottom: 0.5rem;
  line-height: 1.5;
}

.strength-content p {
  font-size: 0.9375rem;
  color: #4a5568;
  line-height: 1.8;
}

@media (min-width: 768px) {
  .section-results {
    padding: 5rem 0;
  }

  .strength-content h3 {
    font-size: 1.125rem;
  }

  .strength-content p {
    font-size: 1rem;
  }
}

/* ----------------------------------------
   S5-b: 対応機器一覧セクション
---------------------------------------- */
.section-equipment {
  background-color: #ffffff;
  padding: 4rem 0;
}

.equipment-category {
  margin-bottom: 2.5rem;
}

.equipment-category h3 {
  font-size: 1.125rem;
  font-weight: 700;
  color: #1a365d;
  margin-bottom: 1rem;
  padding-left: 12px;
  border-left: 4px solid #ed8936;
}

.equipment-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 1.5rem;
}

.equipment-table th,
.equipment-table td {
  padding: 0.75rem 1rem;
  text-align: left;
  border-bottom: 1px solid #e2e8f0;
  font-size: 0.9375rem;
}

.equipment-table th {
  background-color: #edf2f7;
  font-weight: 600;
  color: #2d3748;
}

.equipment-table td:first-child {
  font-weight: 500;
  color: #1a365d;
  white-space: nowrap;
}

.equipment-note {
  font-size: 0.8125rem;
  color: #718096;
  line-height: 1.8;
  text-align: center;
  margin-top: 1rem;
}

@media (min-width: 768px) {
  .section-equipment {
    padding: 5rem 0;
  }

  .equipment-category h3 {
    font-size: 1.25rem;
  }
}

/* ----------------------------------------
   S5-c: 比較表セクション
---------------------------------------- */
.section-comparison {
  padding: 4rem 0;
  background-color: #f7fafc;
}

.comparison-table-wrapper {
  overflow-x: auto;
  margin-bottom: 2.5rem;
  -webkit-overflow-scrolling: touch;
}

.comparison-table {
  width: 100%;
  min-width: 700px;
  border-collapse: collapse;
}

.comparison-table th,
.comparison-table td {
  padding: 1rem;
  text-align: left;
  border: 1px solid #e2e8f0;
  vertical-align: top;
  font-size: 0.9375rem;
  line-height: 1.7;
}

.comparison-table thead th {
  background-color: #1a365d;
  color: #ffffff;
  font-weight: 700;
  text-align: center;
  font-size: 1rem;
}

.comparison-table thead th:first-child {
  background-color: #2d3748;
}

.comparison-table .option-bad {
  background-color: #fff5f5;
  color: #c53030;
}

.comparison-table .option-neutral {
  background-color: #fffff0;
  color: #975a16;
}

.comparison-table .option-good {
  background-color: #f0fff4;
  color: #276749;
}

.comparison-table .row-label {
  font-weight: 700;
  background-color: #f7fafc;
  white-space: nowrap;
  color: #1a365d;
}

.comparison-table tbody td {
  color: #2d3748;
}

.comparison-table .not-recommended {
  color: #c53030;
  font-weight: 600;
}

.comparison-table small {
  font-size: 0.8125rem;
  color: #718096;
}

.comparison-cta {
  background-color: #ebf8ff;
  padding: 1.5rem 2rem;
  border-radius: 8px;
  text-align: center;
}

.comparison-cta p {
  color: #2d3748;
  line-height: 1.8;
  font-size: 0.9375rem;
}

@media (min-width: 768px) {
  .section-comparison {
    padding: 5rem 0;
  }

  .comparison-cta {
    padding: 2rem 2.5rem;
  }

  .comparison-cta p {
    font-size: 1rem;
  }
}

/* ----------------------------------------
   S6: FAQ（アコーディオン）セクション
---------------------------------------- */
.section-faq {
  padding: 4rem 0;
  background-color: #ffffff;
}

.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  margin-bottom: 0.75rem;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  overflow: hidden;
  transition: box-shadow 0.3s ease;
}

.faq-item:hover {
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.faq-question {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.25rem;
  background-color: #f7fafc;
  border: none;
  cursor: pointer;
  font-family: inherit;
  font-size: 0.9375rem;
  font-weight: 700;
  color: #1a365d;
  text-align: left;
  transition: background-color 0.3s ease;
}

.faq-question:hover {
  background-color: #edf2f7;
}

.faq-icon {
  flex-shrink: 0;
  font-size: 0.875rem;
  color: #718096;
  transition: transform 0.3s ease;
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
}

.faq-item.active .faq-answer {
  max-height: 500px;
}

.faq-answer p {
  padding: 1rem 1.25rem 1.25rem;
  font-size: 0.9375rem;
  color: #4a5568;
  line-height: 1.8;
}

@media (min-width: 768px) {
  .section-faq {
    padding: 5rem 0;
  }

  .faq-question {
    font-size: 1rem;
    padding: 1.25rem 1.5rem;
  }

  .faq-answer p {
    padding: 1rem 1.5rem 1.5rem;
  }
}

/* ----------------------------------------
   S7: フッターCTA（メインCTAフォーム）セクション
---------------------------------------- */
.section-main-cta {
  padding: 4rem 0;
  background: linear-gradient(135deg, #1a365d 0%, #2a4a7f 100%);
  color: #ffffff;
}

.trust-badges {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 2rem;
}

.trust-badges li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9375rem;
  color: rgba(255, 255, 255, 0.9);
}

.trust-badges li i {
  color: #68d391;
}

.form-main {
  max-width: 700px;
  margin: 0 auto 1.5rem;
  background-color: #ffffff;
  border-radius: 12px;
  padding: 2rem;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
}

@media (min-width: 768px) {
  .section-main-cta {
    padding: 5rem 0;
  }

  .form-main {
    padding: 2.5rem;
  }
}

/* ----------------------------------------
   フッター
---------------------------------------- */
.site-footer {
  padding: 2rem 0;
  background-color: #1a202c;
  color: rgba(255, 255, 255, 0.6);
  text-align: center;
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.footer-company {
  font-size: 0.9375rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.8);
}

.footer-address {
  font-size: 0.8125rem;
}

.footer-links {
  display: flex;
  gap: 1.5rem;
  margin: 0.5rem 0;
}

.footer-links a {
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.6);
  text-decoration: underline;
}

.footer-links a:hover {
  color: rgba(255, 255, 255, 0.9);
}

.footer-copyright {
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.4);
  margin-top: 0.5rem;
}

/* ----------------------------------------
   送信完了モーダル
---------------------------------------- */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1000;
  align-items: center;
  justify-content: center;
}

.modal.active {
  display: flex;
}

.modal-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
}

.modal-content {
  position: relative;
  background-color: #ffffff;
  border-radius: 16px;
  padding: 2.5rem 2rem;
  max-width: 500px;
  width: calc(100% - 40px);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
  text-align: center;
  animation: modalFadeIn 0.3s ease;
}

@keyframes modalFadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.modal-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: none;
  border: none;
  font-size: 1.25rem;
  color: #a0aec0;
  cursor: pointer;
  padding: 0.25rem;
  transition: color 0.3s ease;
}

.modal-close:hover {
  color: #2d3748;
}

.modal-icon {
  font-size: 3.5rem;
  color: #38a169;
  margin-bottom: 1rem;
}

.modal-body h3 {
  font-size: 1.5rem;
  font-weight: 700;
  color: #1a365d;
  margin-bottom: 0.75rem;
}

.modal-body p {
  font-size: 1rem;
  color: #4a5568;
  line-height: 1.8;
  margin-bottom: 0.5rem;
}

.modal-note {
  font-size: 0.8125rem;
  color: #718096;
}

.modal-close-btn {
  margin-top: 1.5rem;
  padding: 0.75rem 2rem;
  font-size: 1rem;
}

/* ----------------------------------------
   ユーティリティ
---------------------------------------- */

/* スクロール時のフェードイン */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* アクセシビリティ: フォーカスリング */
:focus-visible {
  outline: 3px solid #2b6cb0;
  outline-offset: 2px;
}

/* スクロールバー対策（モーダル表示時） */
body.modal-open {
  overflow: hidden;
}

/* ----------------------------------------
   スクリーンリーダー専用
---------------------------------------- */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ----------------------------------------
   ヘッダーナビゲーション
---------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: #ffffff;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.header-nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 0.75rem;
  padding-bottom: 0.75rem;
}

.header-logo {
  font-size: 1.125rem;
  font-weight: 700;
  color: #1a365d;
  white-space: nowrap;
}

.header-logo:hover {
  color: #1a365d;
}

.header-nav-links {
  display: none;
  align-items: center;
  gap: 1.5rem;
}

.header-nav-links li a {
  font-size: 0.875rem;
  font-weight: 500;
  color: #4a5568;
}

.header-nav-links li a:hover {
  color: #1a365d;
}

.header-nav-links .btn-sm {
  font-size: 0.8125rem;
  padding: 0.4rem 1rem;
}

@media (min-width: 768px) {
  .header-nav-links {
    display: flex;
  }
}

/* ----------------------------------------
   印刷用スタイル
---------------------------------------- */
@media print {
  .section-fv,
  .section-sub-cta,
  .section-main-cta {
    background: #ffffff !important;
    color: #000000 !important;
  }

  .btn,
  .modal {
    display: none !important;
  }
}