/* ===========================
   CSS変数（サービスページに合わせた青系カラー）
=========================== */
:root {
  /* カラー */
  --color-primary:      #2563a8;   /* メインブルー */
  --color-primary-dark: #1a4a8a;   /* ダークブルー */
  --color-primary-lt:   #3a7bc8;   /* ライトブルー */
  --color-accent:       #c8a030;   /* ゴールドアクセント */
  --color-bg:           #f4f7fb;   /* ページ背景 */
  --color-bg-alt:       #eaf0f8;   /* セクション交互背景 */
  --color-white:        #ffffff;
  --color-text:         #1a2340;   /* ダークネイビー */
  --color-text-sub:     #4a5568;   /* サブテキスト */
  --color-text-light:   #8a9ab5;   /* ライトテキスト */
  --color-border:       #d4e0ef;   /* ボーダー */
  --color-result-bg:    #eaf4f0;   /* 解決結果背景（薄グリーン維持） */

  /* タイポグラフィ */
  --font-serif: 'Noto Serif JP', 'Georgia', serif;
  --font-sans:  'Noto Sans JP', 'Helvetica Neue', sans-serif;

  /* スペーシング */
  --section-py: 96px;
  --container:  1080px;

  /* その他 */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --shadow-sm: 0 2px 8px rgba(37,99,168,0.08);
  --shadow-md: 0 6px 24px rgba(37,99,168,0.12);
  --transition: 0.25s ease;
}

/* ===========================
   リセット・ベース
=========================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.9;
  color: var(--color-text);
  background: var(--color-white);
  -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 40px;
}

.section {
  padding: var(--section-py) 0;
}

.br-pc { display: block; }

/* ===========================
   ヘッダー
=========================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  box-shadow: 0 1px 12px rgba(37,99,168,0.08);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.logo {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.logo-main {
  font-family: var(--font-serif);
  font-size: 15px;
  font-weight: 500;
  color: var(--color-primary);
  letter-spacing: 0.05em;
}

.logo-tagline {
  font-size: 10px;
  color: var(--color-text-light);
  letter-spacing: 0.05em;
  margin-top: 1px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav a {
  font-size: 13px;
  color: var(--color-text-sub);
  letter-spacing: 0.05em;
  transition: color var(--transition);
}

.nav a:hover {
  color: var(--color-primary);
}

.nav-cta {
  background: var(--color-primary) !important;
  color: var(--color-white) !important;
  padding: 10px 22px;
  border-radius: 100px;
  font-size: 13px !important;
  font-weight: 500;
  letter-spacing: 0.05em;
  transition: background var(--transition) !important;
}

.nav-cta:hover {
  background: var(--color-primary-dark) !important;
}

/* ===========================
   ① ファーストビュー
=========================== */
.hero {
  position: relative;
  overflow: hidden;
  padding: 100px 0 90px;
  text-align: center;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(160deg, #1a3a6e 0%, #2563a8 45%, #4a90d9 100%);
  z-index: 0;
}

.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 60% 40%, rgba(255,255,255,0.06) 0%, transparent 70%);
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero-label {
  font-size: 11px;
  letter-spacing: 0.35em;
  color: rgba(255,255,255,0.6);
  font-weight: 400;
  margin-bottom: 28px;
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(26px, 3.5vw, 42px);
  font-weight: 400;
  line-height: 1.6;
  color: var(--color-white);
  letter-spacing: 0.04em;
  margin-bottom: 36px;
}

.hero-keywords {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 44px;
}

.hero-keywords span {
  font-size: 13px;
  color: var(--color-white);
  background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.4);
  padding: 7px 20px;
  border-radius: 100px;
  letter-spacing: 0.05em;
  font-weight: 400;
  backdrop-filter: blur(4px);
}

.hero-lead {
  font-family: var(--font-serif);
  font-size: clamp(15px, 1.6vw, 18px);
  line-height: 2.0;
  color: rgba(255,255,255,0.9);
  letter-spacing: 0.05em;
  margin-bottom: 0;
}

.hero-divider {
  width: 36px;
  height: 1px;
  background: rgba(255,255,255,0.4);
  margin: 32px auto;
}

.hero-sub {
  font-size: 14px;
  line-height: 2.1;
  color: rgba(255,255,255,0.75);
}

/* ===========================
   セクション共通
=========================== */
.section-header {
  text-align: center;
  margin-bottom: 56px;
}

.section-label {
  font-size: 11px;
  letter-spacing: 0.3em;
  color: var(--color-primary);
  font-weight: 500;
  margin-bottom: 14px;
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(22px, 2.8vw, 32px);
  font-weight: 400;
  line-height: 1.6;
  color: var(--color-text);
  letter-spacing: 0.04em;
}

/* ===========================
   ② 事例紹介リード
=========================== */
.lead-section {
  background: var(--color-bg-alt);
}

.lead-box {
  max-width: 720px;
  margin: 0 auto;
}

.lead-intro {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 400;
  color: var(--color-text);
  text-align: center;
  margin-bottom: 32px;
  letter-spacing: 0.05em;
}

.lead-list {
  margin-bottom: 40px;
}

.lead-list li {
  position: relative;
  padding: 16px 20px 16px 52px;
  margin-bottom: 12px;
  background: var(--color-white);
  border-radius: var(--radius-md);
  border-left: 3px solid var(--color-primary);
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-text-sub);
  box-shadow: var(--shadow-sm);
}

.lead-list li::before {
  content: '"';
  position: absolute;
  left: 18px;
  top: 14px;
  font-family: var(--font-serif);
  font-size: 22px;
  color: var(--color-primary);
  line-height: 1;
  opacity: 0.6;
}

.lead-message {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 36px 40px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
}

.lead-message p {
  font-size: 14px;
  line-height: 2.0;
  color: var(--color-text-sub);
  text-align: center;
}

.lead-message p + p {
  margin-top: 20px;
}

/* ===========================
   ③ 解決事例一覧（カード型）
=========================== */
.cases-overview {
  background: var(--color-white);
}

.case-cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.case-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 28px 24px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  cursor: pointer;
}

.case-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary-lt);
}

.case-num {
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--color-primary);
  font-weight: 500;
  background: var(--color-bg-alt);
  padding: 4px 10px;
  border-radius: 100px;
  display: inline-block;
  width: fit-content;
}

.case-card-icon {
  font-size: 28px;
  margin: 4px 0;
}

.case-card-title {
  font-family: var(--font-serif);
  font-size: 14px;
  font-weight: 400;
  line-height: 1.7;
  color: var(--color-text);
}

.case-card-desc {
  font-size: 12px;
  line-height: 1.7;
  color: var(--color-text-sub);
  flex-grow: 1;
}

.case-card-tag {
  font-size: 11px;
  color: var(--color-text-light);
  letter-spacing: 0.05em;
}

.case-card-link {
  font-size: 12px;
  color: var(--color-primary);
  font-weight: 500;
  letter-spacing: 0.05em;
  margin-top: 4px;
}

/* ===========================
   ④ 事例詳細
=========================== */
.cases-detail {
  background: var(--color-bg);
}

.case-article {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 56px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
}

.case-article:last-child {
  margin-bottom: 0;
}

.case-article-header {
  background: linear-gradient(135deg, #1a3a6e 0%, #2563a8 100%);
  padding: 40px 48px;
}

.case-article-num {
  display: inline-block;
  font-size: 11px;
  letter-spacing: 0.2em;
  color: rgba(255,255,255,0.7);
  background: rgba(255,255,255,0.15);
  padding: 5px 14px;
  border-radius: 100px;
  margin-bottom: 16px;
}

.case-article-title {
  font-family: var(--font-serif);
  font-size: clamp(18px, 2.2vw, 24px);
  font-weight: 400;
  line-height: 1.6;
  color: var(--color-white);
  letter-spacing: 0.04em;
  margin-bottom: 20px;
}

.case-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag {
  font-size: 11px;
  color: rgba(255,255,255,0.9);
  background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.3);
  padding: 4px 14px;
  border-radius: 100px;
  letter-spacing: 0.05em;
}

.case-article-body {
  padding: 0;
}

.case-block {
  padding: 32px 48px;
  border-bottom: 1px solid var(--color-border);
}

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

.result-block {
  background: #f0f7f4;
  border: none;
  border-top: 2px solid #4caf8a;
}

.case-block-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-serif);
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: 16px;
  letter-spacing: 0.05em;
}

.result-block .case-block-title {
  color: #2d7a5e;
}

.block-icon {
  font-size: 16px;
}

.case-block-content p {
  font-size: 14px;
  line-height: 2.0;
  color: var(--color-text-sub);
}

.case-block-content p + p {
  margin-top: 16px;
}

/* ===========================
   ⑤ 相談者タイプ紹介
=========================== */
.consult-type-section {
  background: var(--color-white);
}

.consult-type-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 48px;
}

.consult-type-grid .consult-type-item:nth-child(4) {
  grid-column: 1 / 2;
}

.consult-type-grid .consult-type-item:nth-child(5) {
  grid-column: 2 / 3;
}

.consult-type-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 28px 24px;
  background: var(--color-bg-alt);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  transition: box-shadow var(--transition);
}

.consult-type-item:hover {
  box-shadow: var(--shadow-sm);
}

.consult-icon {
  font-size: 28px;
  flex-shrink: 0;
  margin-top: 2px;
}

.consult-text {
  font-size: 14px;
  line-height: 1.8;
  color: var(--color-text-sub);
}

.consult-text strong {
  color: var(--color-primary);
  font-weight: 500;
}

.consult-type-note {
  text-align: center;
  padding: 28px 32px;
  background: var(--color-bg-alt);
  border-radius: var(--radius-md);
  border: 1px dashed var(--color-primary);
  max-width: 560px;
  margin: 0 auto;
}

.consult-type-note p {
  font-size: 14px;
  line-height: 2.0;
  color: var(--color-text-sub);
}

/* ===========================
   ⑥ 共通メッセージ
=========================== */
.message-section {
  background: linear-gradient(135deg, #1a3a6e 0%, #2563a8 100%);
}

.message-box {
  max-width: 640px;
  margin: 0 auto;
  text-align: center;
}

.message-text {
  font-family: var(--font-serif);
  font-size: clamp(16px, 2vw, 22px);
  font-weight: 400;
  line-height: 1.9;
  color: rgba(255,255,255,0.92);
  letter-spacing: 0.06em;
}

.message-final {
  font-size: clamp(18px, 2.2vw, 26px);
  color: var(--color-white);
}

.message-divider {
  width: 32px;
  height: 1px;
  background: rgba(255,255,255,0.3);
  margin: 36px auto;
}

/* ===========================
   ⑦ CTA
=========================== */
.cta-section {
  background: var(--color-bg-alt);
}

.cta-box {
  text-align: center;
  max-width: 560px;
  margin: 0 auto;
}

.cta-label {
  font-size: 11px;
  letter-spacing: 0.25em;
  color: var(--color-primary);
  font-weight: 500;
  margin-bottom: 24px;
}

.cta-title {
  font-family: var(--font-serif);
  font-size: clamp(22px, 3vw, 32px);
  font-weight: 400;
  line-height: 1.7;
  color: var(--color-text);
  letter-spacing: 0.05em;
  margin-bottom: 20px;
}

.cta-sub {
  font-size: 15px;
  line-height: 2.0;
  color: var(--color-text-sub);
  margin-bottom: 40px;
}

.cta-button {
  display: inline-block;
  background: #2f7bdc;
  color: var(--color-white);
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.1em;
  padding: 18px 56px;
  border-radius: 100px;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
  box-shadow: 0 4px 20px rgba(37,99,168,0.3);
  margin-bottom: 36px;
}

.cta-button:hover {
  background: #1e62b8;
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(37,99,168,0.4);
}

.cta-notes {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px 28px;
}

.cta-notes li {
  font-size: 13px;
  color: var(--color-text-sub);
  display: flex;
  align-items: center;
  gap: 6px;
}

.check {
  color: var(--color-primary);
  font-weight: 600;
  font-size: 14px;
}

/* ===========================
   フッター（旧スタイル無効化：index.htmlのインラインCSSで管理）
=========================== */
/* .site-footer, .footer-inner 等は index.html 内のインラインCSSで定義済み */

/* ===========================
   レスポンシブ
=========================== */
@media (max-width: 1024px) {
  .case-cards {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  :root {
    --section-py: 64px;
  }

  .container {
    padding: 0 20px;
  }

  .br-pc {
    display: none;
  }

  .header-inner {
    height: 60px;
  }

  .nav {
    gap: 16px;
  }

  .nav a:not(.nav-cta) {
    display: none;
  }

  .hero {
    padding: 72px 0 64px;
  }

  .case-cards {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .case-article-header {
    padding: 28px 24px;
  }

  .case-block {
    padding: 24px;
  }

  .consult-type-grid {
    grid-template-columns: 1fr;
  }

  .consult-type-grid .consult-type-item:nth-child(4),
  .consult-type-grid .consult-type-item:nth-child(5) {
    grid-column: auto;
  }

  .lead-message {
    padding: 24px 20px;
  }

  .cta-button {
    padding: 16px 40px;
    width: 100%;
    max-width: 320px;
  }

  .cta-notes {
    flex-direction: column;
    align-items: center;
    gap: 8px;
  }
}