/* -----------------------------------------
   VIN Identity Design System (Faithful Reproduction - Dark Mode)
   Valtes Innovations Official Site Style (Dark Consulting Ver.)
----------------------------------------- */

:root {
  /* Colors (VIN Dark Theme - VIN公式サイト基準のダークテーマ) */
  --bg-body: #0E0E1A;
  /* メイン背景色 (VIN Navy) */
  --bg-section-alt: #161625;
  /* セクション用背景色 (わずかに明るい) */
  --bg-card: #1C1C28;
  /* カード背景色 */
  --bg-card-hover: #252535;
  /* カードホバー時 */

  --vin-primary: #7c4dff;
  /* プライマリカラー (Purple) */
  --vin-accent: #34e2e4;
  /* アクセントカラー (Cyan/Teal) */
  --vin-teal: #00bfa5;
  --vin-navy: #1a237e;
  /* 濃紺 */

  /* Gradients (グラデーション) */
  --vin-gradient-purple: linear-gradient(135deg, var(--vin-primary) 0%, #0d47a1 100%);
  --vin-gradient-midnight: linear-gradient(180deg, rgba(14, 14, 26, 0) 0%, #0E0E1A 100%);

  /* Text Colors (テキスト色) */
  --text-main: #FFFFFF;
  /* 主要テキスト（白） */
  --text-secondary: #B0B0B0;
  /* 補足テキスト（グレー - 視認性確保） */
  --text-muted: #888888;
  --text-white: #FFFFFF;

  /* Typography (フォント設定) */
  --font-base: 'Noto Sans JP', sans-serif;
  --font-en: 'DM Sans', sans-serif;

  /* Layout (レイアウト) */
  --container-width: 1200px;
  --header-height: 80px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  /* Shadow (ダークモード用の発光・影) */
  --shadow-sm: 0 4px 20px rgba(0, 0, 0, 0.5);
  --shadow-md: 0 10px 30px rgba(0, 0, 0, 0.8), 0 0 15px rgba(124, 77, 255, 0.1);
}

/* Reset & Base */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-base);
  color: var(--text-main);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  background-color: var(--bg-body);
  overflow-x: hidden;
}

.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

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

a {
  text-decoration: none;
  color: inherit;
  transition: opacity 0.3s;
}

a:hover {
  opacity: 0.8;
}

/* Utilities */
.section {
  padding: 100px 0;
}

.pt-0 {
  padding-top: 0 !important;
}

.mb-0 {
  margin-bottom: 0 !important;
}

.mb-5 {
  margin-bottom: 40px !important;
}

/* -----------------------------------------
   Header Components ("site-header" style applied to ".header")
   - VIN公式サイトのヘッダーデザインを再現
----------------------------------------- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  background: rgba(14, 14, 26, 0.95);
  /* 背景色の透過率調整 */
  backdrop-filter: blur(16px);
  /* ぼかしを強めに */
  z-index: 1000;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  /* ボーダーをより繊細に */
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-icon {
  height: 36px;
  /* アイコンサイズ微調整 */
  width: auto;
}

.logo-text {
  font-family: var(--font-en);
  /* 欧文フォント適用 */
  font-size: 1.15rem;
  /* サイズ調整 */
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.02em;
}

.nav {
  display: flex;
  gap: 40px;
  /* アイテム間隔を広めに */
}

.nav-link {
  font-family: var(--font-base);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 4px;
  position: relative;
  opacity: 0.9;
  transition: opacity 0.3s;
}

.nav-link:hover {
  opacity: 1;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--vin-accent);
  /* アクセントカラーのアンダーライン */
  transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

/* Mobile Menu Toggle */
.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  z-index: 1002;
}

.mobile-menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: #fff;
  margin: 6px 0;
  transition: all 0.3s;
}

/* Mobile Nav Styles */
@media (max-width: 960px) {

  /* ブレークポイントを調整 */
  .mobile-menu-toggle {
    display: block;
  }

  .nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    height: 100vh;
    background: var(--bg-body);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 32px;
    transition: right 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    z-index: 1001;
  }

  .nav.active {
    right: 0;
  }
}

/* -----------------------------------------
   Buttons
   - グラデーションとインタラクションの強化
----------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 32px;
  border-radius: 9999px;
  /* 完全な円形 */
  font-family: var(--font-base);
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  border: none;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  text-decoration: none;
  letter-spacing: 0.05em;
}

.btn-primary {
  background: var(--vin-primary);
  /* Solid Purple as requested */
  color: #fff;
  box-shadow: 0 4px 15px rgba(26, 35, 126, 0.2);
  /* Revert to subtle shadow */
}

.btn-primary:hover {
  background-color: #303f9f;
  /* Darker Blue-Purple on hover */
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(26, 35, 126, 0.3);
  opacity: 1;
}

.btn-white {
  background-color: #fff;
  color: var(--vin-navy);
  /* VIN Navy Text */
}

.btn-white:hover {
  background-color: #f0f0f0;
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(255, 255, 255, 0.2);
}

.btn-white-outline {
  background: transparent;
  border: 1px solid #fff;
  /* ボーダーを細く */
  color: #fff;
}

.btn-white-outline:hover {
  background: #fff;
  color: var(--vin-navy);
}

/* -----------------------------------------
   Hero Section
----------------------------------------- */
/* -----------------------------------------
   Hero Section
   - VIN公式サイトのメインビジュアルを意識した構成
----------------------------------------- */
.hero {
  min-height: 100vh;
  padding-top: var(--header-height);
  display: flex;
  align-items: center;
  background: var(--bg-body);
  position: relative;
  overflow: hidden;
}

.hero::after {
  content: '';
  position: absolute;
  top: -20%;
  right: -10%;
  width: 70%;
  height: 120%;
  background: radial-gradient(circle, rgba(124, 77, 255, 0.15) 0%, rgba(5, 5, 11, 0) 70%);
  /* 自然なグロー効果 */
  opacity: 0.8;
  filter: blur(80px);
  z-index: 0;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  align-items: center;
  gap: 80px;
  position: relative;
  z-index: 10;
}

.hero-label {
  display: inline-block;
  font-family: var(--font-en);
  font-size: 0.9rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--vin-accent);
  margin-bottom: 24px;
  background: rgba(52, 226, 228, 0.1);
  /* Accent color tint */
  padding: 8px 20px;
  border-radius: 9999px;
  border: 1px solid rgba(52, 226, 228, 0.2);
}

.hero-title {
  font-size: clamp(3rem, 5vw, 4.5rem);
  /* レスポンシブなフォントサイズ */
  line-height: 1.15;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 32px;
  color: #fff;
}

.hero-subtitle {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--vin-primary);
  /* Purple */
  margin-bottom: 24px;
  display: block;
  /* 改行させる */
}

.hero-description {
  font-size: 1.15rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 48px;
  max-width: 600px;
}

.hero-buttons {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

.hero-buttons .btn {
  padding: 14px 40px;
  font-size: 1rem;
}

/* -----------------------------------------
   Section Headers
----------------------------------------- */
.section-header {
  text-align: center;
  margin-bottom: 80px;
  position: relative;
}

.section-label {
  display: inline-block;
  font-family: var(--font-en);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--vin-accent);
  margin-bottom: 16px;
  position: relative;
  padding-left: 20px;
}

.section-label::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--vin-accent);
  box-shadow: 0 0 10px var(--vin-accent);
}

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  color: #fff;
  /* 明示的に白 */
  margin-bottom: 24px;
  letter-spacing: -0.01em;
}

.section-description {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 720px;
  margin: 0 auto;
  line-height: 1.9;
}

/* -----------------------------------------
   Challenges
----------------------------------------- */
.challenges {
  padding: 120px 0;
  background-color: var(--bg-section-alt);
}

.challenges-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  /* グリッド間隔拡大 */
}

.challenge-card {
  background: var(--bg-card);
  padding: 48px 32px;
  /* パディング拡大 */
  border-radius: var(--radius-lg);
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.05);
  /* 微細なボーダー */
  transition: transform 0.4s cubic-bezier(0.2, 0.8, 0.2, 1), box-shadow 0.4s;
  position: relative;
  overflow: hidden;
  border-top: none;
  /* 古いボーダー削除 */
}

.challenge-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--vin-gradient-purple);
  /* VIN Gradient Top Border */
  opacity: 0;
  transition: opacity 0.3s;
}

.challenge-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

.challenge-card:hover::before {
  opacity: 1;
}

.challenge-icon {
  width: 64px;
  height: 64px;
  margin-bottom: 32px;
  background: rgba(124, 77, 255, 0.1);
  border-radius: 16px;
  padding: 12px;
}

.challenge-title {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: #fff;
}

.challenge-text {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* -----------------------------------------
   Approach
----------------------------------------- */
.approach {
  padding: 120px 0;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.feature-item {
  display: flex;
  gap: 24px;
  padding: 40px;
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-lg);
  transition: all 0.3s;
}

.feature-item:hover {
  box-shadow: var(--shadow-md);
  border-color: rgba(124, 77, 255, 0.3);
  /* Purple border on hover */
  background: linear-gradient(145deg, var(--bg-card), #20202e);
}

.feature-icon {
  width: 64px;
  height: 64px;
  flex-shrink: 0;
}

.feature-content h4 {
  font-size: 1.35rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
}

.feature-content p {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* -----------------------------------------
   Case Study - Modified based on feedback
----------------------------------------- */
.cases {
  padding: 120px 0;
  background-color: var(--bg-section-alt);
}

.cases-grid {
  display: flex;
  flex-direction: column;
  gap: 48px;
  max-width: 1000px;
  margin: 0 auto;
}

.case-card {
  background: #fff;
  /* White background for the whole card context if needed, but split handles it */
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  /* Lighter shadow */
  transition: all 0.4s;
  border: none;
  /* Remove dark border */
}

.case-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.2);
  border-color: rgba(124, 77, 255, 0.3);
}

/* 左右分割レイアウト */
.case-split-layout {
  display: flex;
  flex-direction: row;
  min-height: 360px;
}

.case-split-left {
  flex: 0 0 45%;
  overflow: hidden;
  position: relative;
}

.case-image {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.6s;
  padding: 24px;
  box-sizing: border-box;
}

.case-image-text {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 8px;
}

.case-image-en {
  color: rgba(255, 255, 255, 0.85);
  font-size: clamp(0.975rem, 1.95vw, 1.275rem);
  font-weight: 500;
  line-height: 1.3;
  letter-spacing: 0.05em;
}

.case-image-ja {
  color: white;
  font-size: clamp(1.35rem, 3vw, 1.875rem);
  font-weight: 700;
  line-height: 1.5;
  word-break: break-all;
}

.case-card:hover .case-image {
  transform: scale(1.05);
}

.case-split-right {
  flex: 1;
  background: #fff;
  /* White background as requested */
  padding: 40px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  color: #333;
  /* Dark text for white background */
}

.case-content {
  display: flex;
  flex-direction: column;
  gap: 20px;
  height: 100%;
}

/* タイトルグループ */
.case-title-group {
  margin-bottom: 8px;
}

.case-eyebrow {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--vin-primary);
  text-transform: uppercase;
  margin-bottom: 6px;
  letter-spacing: 0.5px;
}

.case-title {
  font-size: 1.35rem;
  font-weight: 700;
  color: #1a1a2e;
  /* Dark text */
  margin: 0;
  line-height: 1.3;
}

/* 課題・サービスブロック */
.case-bullet-group {
  display: flex;
  flex-direction: column;
  gap: 16px;
  flex-grow: 1;
}

.case-bullet-block {
  background: #f5f4f2;
  /* 薄いグレー背景で独立したブロックに */
  padding: 16px;
  border-radius: 8px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.case-bullet-label {
  font-size: 0.85rem;
  font-weight: 700;
  color: #555;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.case-bullets {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.case-bullets li {
  font-size: 0.85rem;
  color: #444;
  /* Darker text */
  line-height: 1.6;
  padding-left: 16px;
  position: relative;
}

.case-bullets li::before {
  content: '•';
  position: absolute;
  left: 0;
  color: var(--vin-primary);
  font-weight: bold;
}

.case-bullets-service li {
  color: #333;
  font-size: 0.9rem;
}

.case-bullets-service li .text-normal {
  font-weight: 600;
  color: #1a1a2e;
}

/* タグ（下部） */
.case-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: auto;
  padding-top: 16px;
}

.case-tag {
  display: inline-block;
  padding: 4px 12px;
  background: var(--bg-section-alt);
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 500;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

/* レスポンシブ: モバイルでは縦並びに */
@media (max-width: 768px) {
  .case-split-layout {
    flex-direction: column;
  }

  .case-split-left {
    flex: 0 0 200px;
  }
}

/* -----------------------------------------
   Process
----------------------------------------- */
.process {
  padding: 120px 0;
  background-color: var(--bg-section-alt);
}

.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  position: relative;
  margin-top: 80px;
}

.process-steps::before {
  content: '';
  position: absolute;
  top: 40px;
  left: 10%;
  right: 10%;
  height: 2px;
  background: rgba(255, 255, 255, 0.2);
  /* Brighter line */
  z-index: 0;
}

.process-step {
  text-align: center;
  position: relative;
  z-index: 1;
}

.step-number {
  width: 80px;
  height: 80px;
  margin: 0 auto 24px;
  background: var(--bg-card);
  /* Dark background */
  border: 2px solid rgba(124, 77, 255, 0.5);
  /* Brighter border by default */
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s;
  box-shadow: 0 0 15px rgba(124, 77, 255, 0.1);
  /* Glow effect */
}

/* Make non-active state brighter */
.process-step:not(:hover) .step-number {
  border-color: var(--vin-primary);
  background: rgba(124, 77, 255, 0.1);
  /* Slight tint */
}

.process-step:hover .step-number {
  background: var(--vin-primary);
  transform: scale(1.1);
  box-shadow: 0 0 30px rgba(124, 77, 255, 0.5);
  border-color: #fff;
}

.step-icon {
  width: 32px;
  height: 32px;
  opacity: 1;
  /* Bright and visible */
  transition: transform 0.3s ease;
}

.process-step:hover .step-icon {
  transform: scale(1.1);
  /* Gentle scale on hover instead */
}

.step-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: #fff;
  /* White title */
  margin-bottom: 12px;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
  /* Better readability */
}

.step-description {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* -----------------------------------------
   FAQ
----------------------------------------- */
.faq {
  padding: 120px 0;
  background-color: var(--bg-body);
}

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

.faq-item {
  background: var(--bg-card);
  /* Dark card */
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-md);
  margin-bottom: 16px;
  overflow: hidden;
  transition: all 0.3s;
}

.faq-item:hover {
  box-shadow: var(--shadow-sm);
  border-color: rgba(124, 77, 255, 0.3);
}

.faq-question {
  padding: 24px;
  font-size: 1.05rem;
  font-weight: 700;
  color: #fff;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-question {
  width: 100%;
  text-align: left;
  background: transparent;
  border: none;
}

.faq-question:focus-visible {
  outline: 2px solid rgba(52, 226, 228, 0.6);
  outline-offset: 4px;
  border-radius: var(--radius-md);
}

.faq-question svg {
  color: var(--vin-accent);
  transition: transform 0.2s ease;
}

.faq-answer {
  padding: 0 24px 24px;
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.8;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  /* Separator */
  margin-top: 0;
  padding-top: 24px;
}

.faq-answer[hidden] {
  display: none;
}

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

/* -----------------------------------------
   CTA Section - Reverted to Brighter Design
----------------------------------------- */
.cta-section {
  padding: 120px 0;
  background: var(--vin-gradient-purple);
  /* Revert to bright gradient */
  text-align: center;
  color: #fff;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M30 30L0 0' stroke='rgba(255,255,255,0.1)' stroke-width='1'/%3E%3C/svg%3E");
  z-index: 0;
}

.cta-title {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 24px;
  position: relative;
  z-index: 1;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
  min-height: 3.5rem;
}

.cta-description {
  font-size: 1.2rem;
  margin-bottom: 40px;
  opacity: 1;
  line-height: 1.6;
  position: relative;
  z-index: 1;
  min-height: 4.2rem;
}

/* テキストエリアのラッパー: overflow:hidden でアニメーションが外に影響しない */
/* min-height はJSで最初の表示完了後に動的セット */
.cta-text-area {
  overflow: hidden;
}

/* 消去アニメーション（上にスライド＋フェード） */
#cta-title-text,
#cta-desc-text {
  transition: transform 0.35s ease, opacity 0.35s ease;
}

#cta-title-text.cta-exit,
#cta-desc-text.cta-exit {
  transform: translateY(-32px);
  opacity: 0;
}

/* タイピングカーソル */
.cta-title.typing::after,
.cta-description.typing::after {
  content: '▌';
  animation: cta-cursor-blink 0.7s step-end infinite;
  color: #50E3C2;
  font-weight: 400;
}

@keyframes cta-cursor-blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

.cta-buttons {
  display: flex;
  justify-content: center;
  gap: 24px;
  position: relative;
  z-index: 1;
}

.cta-buttons .btn-white {
  background: var(--vin-teal);
  color: #FFFFFF;
  font-weight: 800;
  box-shadow: 0 4px 15px rgba(0, 191, 165, 0.3);
  border: 2px solid var(--vin-teal);
  transition: all 0.3s ease;
  padding: 18px 40px;
  font-size: 1.1rem;
}

.cta-buttons .btn-white:hover {
  background: #FFFFFF;
  color: var(--vin-teal);
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(0, 191, 165, 0.4);
}

.cta-buttons .btn-white-outline {
  border: 2px solid #fff;
  color: #fff;
  background: transparent;
  transition: all 0.3s ease;
  padding: 18px 40px;
  font-size: 1.1rem;
}

.cta-buttons .btn-white-outline:hover {
  background: #fff;
  color: var(--vin-primary);
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(255, 255, 255, 0.3);
}

/* -----------------------------------------
   Footer
----------------------------------------- */
.footer {
  background: #05050B;
  /* Deepest Black */
  color: #fff;
  padding: 80px 0 40px;
  font-size: 0.9rem;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-content {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 60px;
  margin-bottom: 60px;
}

.footer-brand .logo-text {
  color: #fff;
  font-size: 1.25rem;
  font-weight: 700;
  font-family: var(--font-en);
}

.footer-description {
  margin-top: 24px;
  opacity: 0.6;
  line-height: 1.7;
  max-width: 300px;
}

.footer-nav h4 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 24px;
  opacity: 1;
  color: var(--vin-primary);
}

.footer-nav ul {
  list-style: none;
}

.footer-nav li {
  margin-bottom: 12px;
}

.footer-nav a {
  opacity: 0.6;
  transition: opacity 0.3s;
  color: #fff;
}

.footer-nav a:hover {
  opacity: 1;
  color: var(--vin-accent);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 32px;
  text-align: center;
  /* Removed opacity: 0.5 to control child opacity independently */
}

.footer-bottom-links {
  display: flex;
  justify-content: center;
  gap: 24px;
  list-style: none;
  padding: 0;
  margin: 0 0 24px;
  flex-wrap: wrap;
}

.footer-bottom-links li {
  margin: 0;
}

.footer-bottom-links a {
  color: #fff;
  opacity: 0.6;
  font-size: 0.85rem;
  transition: opacity 0.3s;
}

.footer-bottom-links a:hover {
  opacity: 1;
  color: var(--vin-accent);
}

.copyright {
  opacity: 0.5;
  font-size: 0.8rem;
  margin: 0;
}

/* -----------------------------------------
   Gull-wing Door Animation
----------------------------------------- */
#gull-wing-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 9999;
  display: flex;
  pointer-events: none;
  /* Changed via JS when done */
  perspective: 2000px;
  overflow: hidden;
}

.wing {
  position: absolute;
  top: 0;
  width: 50%;
  height: 100%;
  background: var(--vin-primary);
  /* Deep Blue */
  transform-origin: top center;
  transition: transform 1.5s cubic-bezier(0.6, 0.05, 0.2, 0.9);
  will-change: transform;
  z-index: 2;
}

.wing-left {
  left: 0;
  border-right: 1px solid rgba(255, 255, 255, 0.1);
  transform-origin: top left;
}

.wing-right {
  right: 0;
  border-left: 1px solid rgba(255, 255, 255, 0.1);
  transform-origin: top right;
}

/* Content inside the wings (Logo/Text) */
.wing-content {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  transition: opacity 0.5s ease-out;
}

.wing-logo-icon {
  width: 80px;
  height: 80px;
  animation: pulse 2s infinite;
}

.wing-logo-text {
  color: white;
  font-family: var(--font-base);
  font-size: 1.2rem;
  letter-spacing: 0.1em;
  opacity: 0.8;
}

/* Animation States */
#gull-wing-overlay.active .wing-left {
  transform: rotateY(-90deg) rotateX(10deg) skewY(5deg);
  /* Opens like a door but also tilts up */
}

#gull-wing-overlay.active .wing-right {
  transform: rotateY(90deg) rotateX(10deg) skewY(-5deg);
}

#gull-wing-overlay.active .wing-content {
  opacity: 0;
}

@keyframes pulse {
  0% {
    transform: scale(1);
    opacity: 1;
  }

  50% {
    transform: scale(1.05);
    opacity: 0.8;
  }

  100% {
    transform: scale(1);
    opacity: 1;
  }
}

/* -----------------------------------------
   Responsive
----------------------------------------- */
@media (max-width: 1024px) {
  .hero-inner {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-buttons {
    justify-content: center;
  }

  .hero-visual {
    order: -1;
  }

  .multimodal-graphic {
    max-width: 60%;
  }

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

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

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

  .process-steps::before {
    display: none;
  }

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

  .footer-content {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .header-inner {
    flex-wrap: wrap;
  }



  .hero-title {
    font-size: 2.2rem;
  }

  .section-title {
    font-size: 1.8rem;
  }

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

  .process-steps {
    grid-template-columns: 1fr;
  }

  .footer-content {
    grid-template-columns: 1fr;
  }
}

/* -----------------------------------------
   Contact Form (Dummy)
----------------------------------------- */
.contact-section {
  padding: 80px 0;
  background-color: var(--bg-body);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.contact-form-wrapper {
  max-width: 600px;
  margin: 0 auto;
  background: var(--bg-card);
  padding: 40px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

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

.form-label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 12px 16px;
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-sm);
  color: #fff;
  font-family: var(--font-base);
  font-size: 1rem;
  transition: all 0.3s;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--vin-primary);
  background: rgba(0, 0, 0, 0.4);
  box-shadow: 0 0 0 3px rgba(124, 77, 255, 0.2);
}

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

.form-submit {
  width: 100%;
  padding: 16px;
  font-size: 1rem;
  font-weight: 700;
  margin-top: 16px;
}

.form-label .required {
  color: #ef5350;
  margin-left: 4px;
}

/* -----------------------------------------
   Smooth Scroll & Back to Top
----------------------------------------- */
html {
  scroll-behavior: smooth;
}

.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 50px;
  height: 50px;
  border: none;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--vin-primary) 0%, #5c3dbf 100%);
  color: #FFFFFF;
  cursor: pointer;
  box-shadow: 0 4px 15px rgba(124, 77, 255, 0.4);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all 0.3s ease;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(124, 77, 255, 0.5);
}

.back-to-top svg {
  width: 24px;
  height: 24px;
}

/* -----------------------------------------
   Asset Slot (プレースホルダ)
   差し込み素材の予定枠を可視化
----------------------------------------- */
.asset-slot {
  border: 2px dashed var(--vin-accent);
  border-radius: var(--radius-md);
  background: rgba(52, 226, 228, 0.05);
  padding: 32px;
  margin-top: 24px;
  text-align: center;
}

.asset-slot-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.asset-slot-label {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--vin-accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.asset-slot-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 600px;
}

.asset-slot-lg {
  padding: 48px 32px;
  min-height: 160px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.asset-slot-sm {
  padding: 12px 16px;
  margin-top: 12px;
  border-width: 1px;
  display: flex;
  align-items: center;
  gap: 8px;
  justify-content: center;
}

.asset-slot-desc-sm {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* -----------------------------------------
   Brand Mini Block (ブランド保持製品)
----------------------------------------- */
.brand-mini-block {
  margin-top: 64px;
  padding: 48px 0 0;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.brand-mini-title {
  font-size: 1.3rem;
  font-weight: 700;
  color: #fff;
  text-align: center;
  margin-bottom: 8px;
}

.brand-mini-subtitle {
  font-size: 0.9rem;
  color: var(--text-secondary);
  text-align: center;
  margin-bottom: 40px;
}

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

.brand-mini-card {
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  text-align: center;
  transition: border-color 0.3s;
}

.brand-mini-card:hover {
  border-color: rgba(52, 226, 228, 0.3);
}

.brand-mini-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 16px;
}

.brand-mini-card h4 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--vin-accent);
  margin-bottom: 8px;
  font-family: var(--font-en);
}

.brand-mini-card p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* -----------------------------------------
   PoC Gap Section
----------------------------------------- */
.poc-gap {
  padding: 100px 0;
  background: var(--bg-body);
}

@media (max-width: 768px) {
  .brand-mini-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
}

/* -----------------------------------------
   AI導入フェーズ比較表
----------------------------------------- */
.phase-compare-wrapper {
  margin-top: 3rem;
}

.phase-compare-wrapper h3 {
  text-align: center;
  margin-bottom: 1.5rem;
  font-size: 1.3rem;
  color: #fff;
}

.phase-compare-scroll {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.phase-compare-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  font-size: 0.95rem;
}

.phase-compare-table thead th {
  background: var(--vin-primary);
  color: #fff;
  padding: 16px 20px;
  text-align: left;
  font-weight: 700;
  font-size: 0.9rem;
  letter-spacing: 0.02em;
  border-bottom: 2px solid rgba(255, 255, 255, 0.15);
}

.phase-compare-table thead th:first-child {
  border-radius: var(--radius-lg) 0 0 0;
  min-width: 160px;
}

.phase-compare-table thead th:last-child {
  border-radius: 0 var(--radius-lg) 0 0;
}

.phase-compare-table tbody td {
  padding: 16px 20px;
  color: var(--text-secondary);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  line-height: 1.7;
  vertical-align: top;
}

.phase-compare-table tbody tr {
  background: var(--bg-card);
  transition: background 0.2s;
}

.phase-compare-table tbody tr:nth-child(even) {
  background: rgba(255, 255, 255, 0.02);
}

.phase-compare-table tbody tr:hover {
  background: rgba(124, 77, 255, 0.06);
}

/* VINハイライト行 */
.phase-compare-table tbody tr.phase-vin {
  background: rgba(124, 77, 255, 0.12);
  border-left: 4px solid var(--vin-primary);
}

.phase-compare-table tbody tr.phase-vin td {
  color: #fff;
  font-weight: 500;
}

.phase-compare-table tbody tr.phase-vin td:first-child {
  font-weight: 700;
  color: var(--vin-accent);
}

.phase-compare-table tbody tr.phase-vin td:last-child {
  font-weight: 700;
  color: var(--vin-accent);
}

.phase-compare-table tbody tr:last-child td:first-child {
  border-radius: 0 0 0 var(--radius-lg);
}

.phase-compare-table tbody tr:last-child td:last-child {
  border-radius: 0 0 var(--radius-lg) 0;
}

.phase-compare-note {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 12px;
  text-align: center;
}

/* 提供実績セクション */
.proof-block h3 {
  color: #fff;
}

.proof-block .section-description {
  color: var(--text-secondary);
}

@media (max-width: 768px) {

  .phase-compare-table thead th,
  .phase-compare-table tbody td {
    padding: 12px 14px;
    font-size: 0.85rem;
  }
}

/* -----------------------------------------
   Features List (Vertical Layout)
----------------------------------------- */
.features-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
  max-width: 900px;
  margin: 0 auto 5rem;
}

.feature-list-item {
  display: flex;
  align-items: flex-start;
  background: var(--bg-card);
  padding: 32px;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.05);
  transition: transform 0.3s, border-color 0.3s;
}

.feature-list-item:hover {
  transform: translateY(-2px);
  border-color: rgba(124, 77, 255, 0.3);
  background: rgba(124, 77, 255, 0.03);
}

.feature-list-icon {
  flex-shrink: 0;
  width: 56px;
  height: 56px;
  margin-right: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.feature-list-content h4 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: #fff;
}

.feature-list-content p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

@media (max-width: 768px) {
  .feature-list-item {
    padding: 24px;
    flex-direction: column;
  }

  .feature-list-icon {
    margin-right: 0;
    margin-bottom: 16px;
  }
}

/* Proof Section Updates */
.asset-slot-lg {
  height: 280px;
  /* プレースホルダの高さを確保 */
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.03);
  border: 1px dashed rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-md);
  color: var(--text-muted);
}

/* Stats Grid for Proof Section */
.proof-stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 16px;
  max-width: 900px;
  margin: 2rem auto 0;
}

.stat-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  padding: 24px 12px;
  text-align: center;
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.stat-card:hover {
  transform: translateY(-5px);
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--vin-accent);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.stat-value {
  display: flex;
  align-items: baseline;
  justify-content: center;
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--vin-accent);
  line-height: 1.1;
  margin-bottom: 8px;
  letter-spacing: -0.02em;
}

.stat-unit {
  font-size: 1rem;
  color: #fff;
  margin-left: 4px;
  font-weight: 500;
  opacity: 0.9;
}

.stat-label {
  display: block;
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 500;
  line-height: 1.4;
}

@media (max-width: 600px) {
  .proof-stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .stat-card {
    padding: 16px 8px;
  }

  .stat-value {
    font-size: 1.8rem;
  }
}/* --- Integrated Reference Styles (Header/Footer/Nav) --- */

.rounded-block-top { border-top-left-radius: 32px; border-top-right-radius: 32px; }
@media (min-width: 768px) { .rounded-block-top { border-top-left-radius: 40px; border-top-right-radius: 40px; } }

.layout__split { display: flex; flex-direction: column; gap: 40px; width: 100%; }
@media (min-width: 768px) { .layout__split { flex-direction: row; } }
.layout__split--gap-md { gap: 20px; }
.layout__split--gap-xl { gap: 30px; }
@media (min-width: 768px) { .layout__split--gap-xl { gap: 80px; } }
.layout__split--gap-xxl { gap: 40px; }
@media (min-width: 768px) { .layout__split--gap-xxl { gap: 110px; } }
.layout__split-col-left, .layout__split-col-right { flex: 1 1 0%; }

.button { display: inline-flex; padding: 8px 20px; align-items: center; gap: 20px; font-weight: 500; border-radius: 4px; }
.button--primary { color: #2B1859; background-color: #D2C5F5; transition: all 300ms ease-out; }
.button--primary:hover { color: #2B1859; background-color: #A78AEB; }
.button--small { font-size: 13px; }

.back-to-top { position: fixed; bottom: 27px; right: 27px; width: 56px; height: 56px; display: flex; align-items: center; justify-content: center; background-color: #6236C8; border-radius: 50%; opacity: 0; pointer-events: none; transition: opacity 0.3s ease, transform 0.3s ease; z-index: 100; }
.back-to-top svg { width: 34px; height: 34px; }
.back-to-top.visible { opacity: 1; pointer-events: auto; }
.back-to-top.visible:hover { transform: translateY(-5px); }

.site-header { display: flex; width: 100%; padding: 0; justify-content: center; position: fixed; left: 0; right: 0; z-index: 1000; }
@media (min-width: 768px) { .site-header { padding: 24px; } }
.site-header--min .main-nav { padding: 20px 24px; width: 100%; max-width: 1280px; margin: 0 auto; background-color: transparent; overflow-x: visible; }
@media (min-width: 768px) { .site-header--min .main-nav { padding: 0; } }

.site-logo__link { display: block; text-decoration: none; }
.site-logo__image { width: 127px; height: auto; display: block; }
.site-navigation { display: flex; align-items: center; }

.main-nav { padding: 12px 20px; width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 32px; background-color: #2B1859; }
@media (min-width: 768px) { .main-nav { display: inline-flex; width: auto; justify-content: flex-start; border-radius: 8px; } }

.main-nav__toggle { position: relative; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 3px; width: 56px; height: 56px; background-color: transparent; border-radius: 100%; border: none; cursor: pointer; }
.main-nav__toggle span { display: block; width: 18px; height: 2px; background-color: white; transition: all 0.3s ease; position: absolute; }
.main-nav__toggle span:nth-child(1) { transform: translateY(-6px); }
.main-nav__toggle span:nth-child(2) { transform: translateY(0); }
.main-nav__toggle span:nth-child(3) { transform: translateY(6px); }
.main-nav__toggle.is-active span:nth-child(1) { transform: translateY(0) rotate(45deg); }
.main-nav__toggle.is-active span:nth-child(2) { opacity: 0; }
.main-nav__toggle.is-active span:nth-child(3) { transform: translateY(0) rotate(-45deg); }
@media (min-width: 768px) { .main-nav__toggle { display: none; } }

.main-nav__list { display: none; align-items: center; gap: 1rem; margin: 0; padding: 0; list-style: none; }
@media (min-width: 768px) { .main-nav__list { display: flex; } }

.main-nav__item { position: relative; }

.main-nav__link { display: inline-flex; align-items: center; font-size: 13px; text-decoration: none; color: #FFFFFF; white-space: nowrap; transition: color 0.3s ease; gap: 2px; padding: 0.5rem 0; }
.main-nav__link:hover { color: #D2C5F5; }
.main-nav__link .icon { display: inline-flex; align-items: center; transition: transform 0.25s ease; }
.main-nav__link .icon svg path { fill: currentColor; }
.main-nav__item.has-dropdown:hover .main-nav__link .icon { transform: rotate(45deg); }

.main-nav .dropdown { position: absolute; display: flex; padding: 10px; flex-direction: column; gap: 2px; min-width: 180px; background-color: #FFFFFF; border-radius: 8px; opacity: 0; box-shadow: 0px 0px 12px 0px rgba(0, 0, 0, 0.15); transform: translate(0, 20%); transition: all 250ms ease-out; pointer-events: none; }
.main-nav__item.has-dropdown:hover .dropdown { opacity: 1; transform: translate(0, 0); pointer-events: auto; }
.main-nav .dropdown__link { font-size: 12px; font-weight: 700; color: rgb(132, 90, 232); padding: 6px 10px; border-radius: 4px; transition: background-color 0.2s ease, color 0.3s ease; }
.main-nav .dropdown__link:hover { background-color: #F5F5F5; opacity: 1; }

.mobile-menu { position: fixed; top: 0; left: 0; display: flex; flex-direction: column; width: 100%; height: 0; background: #2B1859; overflow: hidden; transition: all 0.3s ease-in-out; z-index: 1001; opacity: 0; visibility: hidden; }
.mobile-menu.is-open { height: 100vh; overflow-y: auto; opacity: 1; visibility: visible; }
.mobile-menu__header { display: flex; align-items: center; justify-content: space-between; padding: 12px 20px; border-bottom: 1px solid rgba(255, 255, 255, 0.1); }
.mobile-menu__close { position: relative; width: 56px; height: 56px; background: transparent; border: none; cursor: pointer; }
.mobile-menu__close span { position: absolute; top: 50%; left: 50%; width: 20px; height: 2px; background-color: #FFFFFF; }
.mobile-menu__close span:nth-child(1) { transform: translate(-50%, -50%) rotate(45deg); }
.mobile-menu__close span:nth-child(2) { transform: translate(-50%, -50%) rotate(-45deg); }
.mobile-menu__nav { padding: 32px 20px; display: flex; flex-direction: column; }
.mobile-menu__nav-list { margin: 0; padding: 0; list-style: none; }
.mobile-menu__nav-link { display: flex; align-items: center; justify-content: space-between; padding: 16px 0; font-size: 16px; font-weight: 500; color: #FFFFFF; text-decoration: none; border-bottom: 1px solid rgba(255, 255, 255, 0.1); }
.mobile-menu__accordion-toggle { width: 100%; background: transparent; border: none; cursor: pointer; text-align: left; }
.mobile-menu__nav-text { display: flex; flex-direction: column; align-items: flex-start; gap: 2px; }
.mobile-menu__nav-desc { font-size: 12px; font-weight: 400; color: rgba(255, 255, 255, 0.55); }
.mobile-menu__accordion-toggle .icon { transition: transform 0.3s ease; flex-shrink: 0; }
.mobile-menu__nav-item.is-open .mobile-menu__accordion-toggle .icon { transform: rotate(45deg); }
.mobile-menu__subnav { display: none; list-style: none; margin: 0; padding: 0 0 8px 4px; }
.mobile-menu__nav-item.is-open > .mobile-menu__subnav { display: block; }
.mobile-menu__subnav-item { list-style: none; }
.mobile-menu__subnav-link { display: block; padding: 10px 0; font-size: 13px; color: rgba(255, 255, 255, 0.75); text-decoration: none; border-bottom: 1px solid rgba(255, 255, 255, 0.06); }
.mobile-menu__subnav-link:hover { color: #FFFFFF; }
.mobile-menu__cta-buttons { margin-top: 32px; display: flex; flex-direction: column; gap: 12px; }
.mobile-menu__cta-button { display: flex; align-items: center; justify-content: space-between; padding: 20px 16px 20px 20px; background: rgba(255, 255, 255, 0.08); border-radius: 12px; font-size: 15px; font-weight: 500; color: #FFFFFF; text-decoration: none; }
.mobile-menu__cta-button .icon { display: flex; align-items: center; justify-content: center; width: 40px; height: 40px; background: rgb(132, 90, 232); border-radius: 50%; flex-shrink: 0; }
.mobile-menu__cta-button .icon svg path { fill: #FFFFFF; }

.footer { padding: 60px 24px; background-color: #2B1859; color: #FFFFFF; }
@media (min-width: 768px) { .footer { padding: 80px 60px; } }
.footer__ctas { margin-bottom: 64px; }
.footer__cta { padding: 40px 24px; display: flex; align-items: center; background-color: #201242; border-radius: 32px; color: #FFFFFF; text-decoration: none; gap: 20px; margin-bottom: 16px; }
.footer__cta:hover { color: #A78AEB; }
.footer__cta-content { flex: 1; }
.footer__cta-title { display: flex; align-items: center; gap: 8px; }
.footer__cta-title h3 { margin: 0; font-size: 22px; }
.footer__cta-arrow--mobile { display: inline-flex; align-items: center; }
.footer__cta-arrow--mobile svg path { fill: #FFFFFF; }
.footer__cta-arrow--desktop { display: none; align-items: center; justify-content: center; width: 50px; height: 50px; background: rgb(132, 90, 232); border-radius: 50%; flex-shrink: 0; }
.footer__cta-arrow--desktop svg path { fill: #FFFFFF; }
@media (min-width: 768px) { .footer__cta-arrow--mobile { display: none; } .footer__cta-arrow--desktop { display: flex; } }
.footer__body { display: flex; flex-direction: column; gap: 40px; }
@media (min-width: 768px) { .footer__body { flex-direction: row; justify-content: space-between; } }
.footer__address { padding: 20px; margin-bottom: 8px; background-color: #361E6F; border-radius: 12px; font-size: 12px; }
.footer__links { display: flex; flex-wrap: wrap; gap: 40px; }
.footer__links-list { list-style: none; padding: 0; margin: 0; }
.footer__link { font-size: 18px; color: #FFFFFF; text-decoration: none; display: flex; align-items: center; gap: 6px; margin-bottom: 10px; }
.footer__link::before { content: '•'; color: rgb(132, 90, 232); font-size: 20px; line-height: 1; flex-shrink: 0; }
.footer__sublinks { list-style: none; padding: 0; margin: 0; }
.footer__sublink { font-size: 12px; color: #FFFFFF; text-decoration: none; display: block; margin-bottom: 5px; }
.footer__legal { margin-top: 40px; border-top: 1px solid rgba(255, 255, 255, 0.1); padding-top: 20px; }
.footer__legal-links { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 20px; }
.footer__legal-link { font-size: 12px; color: #FFFFFF; text-decoration: none; }
.footer__copyright { margin-top: 20px; font-size: 10px; opacity: 0.6; }
.footer__addendum { padding: 40px 24px; background-color: #FFFFFF; color: #333; text-align: center; }
.footer__addendum-logos { display: flex; justify-content: center; gap: 20px; margin-top: 20px; }

/* ----------------------------------------
   画像待ちユーティリティ
   画像が準備できたら該当要素の img-pending クラスを削除すると表示される
---------------------------------------- */
.img-pending { display: none !important; }
.footer__addendum-logos img { height: 40px; }

/* AI usage guide: desktop SVG + mobile cards */
.ai-usage-desktop { display: block; }
.ai-usage-mobile { display: none; margin-bottom: 2.5rem; }
.ai-usage-mobile-grid { display: grid; grid-template-columns: 1fr; gap: 14px; }
.ai-usage-mobile-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 14px;
  padding: 16px;
}
.ai-usage-mobile-title { font-size: 1.05rem; margin-bottom: 8px; color: #fff; }
.ai-usage-mobile-body { color: var(--text-secondary); margin: 0 0 10px; }
.ai-usage-mobile-kv { margin: 6px 0 0; color: #fff; }

@media (max-width: 768px) {
  .ai-usage-desktop { display: none; }
  .ai-usage-mobile { display: block; }
}