/* ========================================
   AI導入支援LP — スタイルシート
   ======================================== */

/* --- 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(--ai-font-body);
  font-size: var(--ai-size-body);
  line-height: var(--ai-leading-normal);
  color: var(--ai-text-primary);
  background: var(--ai-bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }

/* --- ユーティリティ --- */
.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.pc-only { display: inline; }
.sp-only { display: none; }
@media (max-width: 767px) {
  .pc-only { display: none; }
  .sp-only { display: inline; }
}

/* ========================================
   HEADER（既存LP統一・ダークテーマ版）
   ======================================== */
.header {
  position: fixed; top: 0; left: 0; width: 100%; z-index: 100;
  background: rgba(10, 14, 26, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(99, 102, 241, 0.1);
  transition: box-shadow 0.3s;
}
.header--scrolled { box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3); }
.header__inner {
  max-width: 1200px; margin: 0 auto; padding: 0 24px;
  display: flex; align-items: center; justify-content: space-between;
  height: 64px;
}
.header__logo-main {
  font-family: var(--ai-font-heading);
  font-size: 1.4rem; font-weight: 800;
  color: var(--white);
  letter-spacing: 0.08em;
}
.header__nav { display: flex; align-items: center; gap: 28px; }
.header__nav-link {
  font-size: 0.85rem; font-weight: 500;
  color: var(--ai-text-secondary);
  transition: color 0.2s;
}
.header__nav-link:hover { color: var(--white); }
.header__cta-btn {
  font-size: 0.85rem; font-weight: 600;
  color: var(--navy); background: var(--gold);
  padding: 8px 20px; border-radius: 6px;
  transition: background 0.2s, box-shadow 0.2s;
}
.header__cta-btn:hover {
  background: #d4b45e;
  box-shadow: 0 0 20px rgba(201, 168, 76, 0.3);
}

/* ハンバーガー */
.header__hamburger {
  display: none; flex-direction: column; gap: 5px;
  padding: 4px; width: 32px;
  background: none; border: none; cursor: pointer;
}
.header__hamburger span {
  display: block; height: 2px; background: var(--ai-text-secondary);
  border-radius: 2px; transition: all 0.3s;
}

/* ドロップダウン */
.header__nav-dropdown { position: relative; }
.header__nav-link--has-dropdown { display: inline-flex; align-items: center; }
.header__dropdown-menu {
  position: absolute; top: 100%; left: 50%; transform: translateX(-50%);
  background: var(--ai-bg-card);
  border: 1px solid rgba(99, 102, 241, 0.15);
  border-radius: 10px; padding: 8px 0;
  min-width: 220px;
  opacity: 0; pointer-events: none;
  transition: opacity 0.2s, transform 0.2s;
  transform: translateX(-50%) translateY(8px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}
.header__nav-dropdown:hover .header__dropdown-menu {
  opacity: 1; pointer-events: all;
  transform: translateX(-50%) translateY(0);
}
.header__dropdown-item {
  display: block; padding: 10px 20px;
  font-size: 0.85rem; color: var(--ai-text-secondary);
  transition: background 0.15s, color 0.15s;
}
.header__dropdown-item:hover { background: rgba(99, 102, 241, 0.1); color: var(--white); }
.header__dropdown-item--active { color: var(--gold); }
.header__dropdown-item--disabled { color: rgba(148, 163, 184, 0.5); pointer-events: none; }

@media (max-width: 768px) {
  .header__nav { display: none; }
  .header__hamburger { display: flex; }
}

/* --- モバイルナビ --- */
.mobile-nav {
  position: fixed; inset: 0; z-index: 99;
  background: rgba(10, 14, 26, 0.95);
  backdrop-filter: blur(16px);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; pointer-events: none;
  transition: opacity 0.3s;
}
.mobile-nav--open { opacity: 1; pointer-events: all; }
.mobile-nav__inner { text-align: center; display: flex; flex-direction: column; gap: 28px; }
.mobile-nav__label { font-size: 0.85rem; font-weight: 600; color: var(--ai-text-secondary); letter-spacing: 0.05em; }
.mobile-nav__link { font-size: 1.125rem; font-weight: 500; color: var(--ai-text-primary); }
.mobile-nav__link--indent { padding-left: 16px; font-size: 1rem; }
.mobile-nav__link--active { color: var(--gold); }
.mobile-nav__link--disabled { color: rgba(148, 163, 184, 0.5); pointer-events: none; }
.mobile-nav__cta {
  display: inline-block; margin-top: 8px;
  background: var(--gold); color: var(--navy);
  font-weight: 600; padding: 14px 32px; border-radius: 8px;
  transition: box-shadow 0.2s;
}
.mobile-nav__cta:hover { box-shadow: 0 0 24px rgba(201, 168, 76, 0.3); }

/* ========================================
   ボタン共通
   ======================================== */
.ai-btn {
  display: inline-flex; align-items: center; justify-content: center;
  font-family: var(--ai-font-heading);
  font-weight: 700; border-radius: 8px;
  cursor: pointer; border: none;
  transition: transform 0.2s, box-shadow 0.3s, background 0.2s;
}
.ai-btn--primary {
  background: var(--gold); color: var(--navy);
}
.ai-btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 30px rgba(201, 168, 76, 0.4), 0 4px 16px rgba(201, 168, 76, 0.2);
}
.ai-btn--lg { padding: 16px 36px; font-size: 1.05rem; }
.ai-btn--sm { padding: 10px 24px; font-size: 0.9rem; }

/* ========================================
   ファーストビュー（#hero）
   ======================================== */
.ai-hero {
  position: relative;
  min-height: 100vh; min-height: 100dvh;
  display: flex; align-items: center; justify-content: center;
  background: var(--ai-gradient-hero);
  overflow: hidden;
  padding: 120px 24px 80px;
}

/* 微粒子エフェクト（ドットグリッド） */
.ai-hero__particles {
  position: absolute; inset: 0;
  background-image:
    radial-gradient(circle, rgba(99, 102, 241, 0.25) 1px, transparent 1px),
    radial-gradient(circle, rgba(139, 92, 246, 0.15) 1px, transparent 1px);
  background-size: 40px 40px, 60px 60px;
  background-position: 0 0, 20px 30px;
  animation: particleDrift 20s linear infinite;
  opacity: 0.6;
}

@keyframes particleDrift {
  0% { transform: translate(0, 0); }
  50% { transform: translate(-15px, -10px); }
  100% { transform: translate(0, 0); }
}

/* グロウエフェクト */
.ai-hero__glow {
  position: absolute;
  top: 30%; left: 50%;
  width: 600px; height: 600px;
  transform: translate(-50%, -50%);
  background: radial-gradient(ellipse at center,
    rgba(99, 102, 241, 0.12) 0%,
    rgba(139, 92, 246, 0.06) 40%,
    transparent 70%);
  pointer-events: none;
}

/* コンテンツ */
.ai-hero__inner {
  position: relative; z-index: 1;
  max-width: 800px; width: 100%;
  text-align: center;
}

/* サービスラベル */
.ai-hero__label {
  font-family: var(--ai-font-display);
  font-size: var(--ai-size-small);
  font-weight: 600;
  color: var(--ai-accent-glow);
  letter-spacing: 0.15em;
  margin-bottom: 32px;
  opacity: 0;
  animation: fadeInUp 0.6s ease-out 0.2s forwards;
}

/* メインコピー */
.ai-hero__catch {
  font-family: var(--ai-font-heading);
  font-size: var(--ai-size-hero);
  font-weight: 800;
  line-height: var(--ai-leading-tight);
  color: var(--white);
  margin-bottom: 28px;
}

.ai-hero__line {
  display: block;
  opacity: 0;
  animation: fadeInUp 0.7s ease-out forwards;
}
.ai-hero__line--1 { animation-delay: 0.4s; }
.ai-hero__line--2 { animation-delay: 0.6s; }
.ai-hero__line--3 { animation-delay: 0.8s; }
.ai-hero__line--4 { animation-delay: 1.0s; }

/* サブコピー */
.ai-hero__sub {
  font-size: clamp(0.95rem, 1.5vw, 1.125rem);
  color: var(--ai-text-secondary);
  line-height: var(--ai-leading-normal);
  margin-bottom: 40px;
  opacity: 0;
  animation: fadeInUp 0.7s ease-out 1.3s forwards;
}
.ai-hero__sub em {
  font-style: normal;
  color: var(--ai-text-accent);
  font-weight: 700;
}

/* CTA */
.ai-hero__cta-wrap {
  margin-bottom: 56px;
  opacity: 0;
  animation: fadeInUp 0.7s ease-out 1.5s forwards;
}

/* 実績数値バッジ */
.ai-hero__trust {
  display: flex; align-items: center; justify-content: center;
  gap: 32px;
  opacity: 0;
  animation: fadeInUp 0.7s ease-out 1.8s forwards;
}
.ai-hero__trust-item { text-align: center; }
.ai-hero__trust-num {
  display: block;
  font-family: var(--ai-font-display);
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 800;
  color: var(--ai-text-accent);
  text-shadow: 0 0 30px rgba(201, 168, 76, 0.3);
  line-height: 1.2;
}
.ai-hero__trust-num small {
  font-size: 0.5em; font-weight: 600;
  color: var(--ai-text-secondary);
}
.ai-hero__trust-label {
  display: block;
  font-size: var(--ai-size-small);
  color: var(--ai-text-secondary);
  margin-top: 4px;
}
.ai-hero__trust-divider {
  width: 1px; height: 40px;
  background: linear-gradient(to bottom, transparent, rgba(99, 102, 241, 0.3), transparent);
}

/* ========================================
   フェードインアニメーション
   ======================================== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* スクロールフェード（汎用） */
.ai-section {
  padding: 100px 24px;
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s ease-out, transform 0.7s ease-out;
}
.ai-section.visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- セクション共通パーツ --- */
.ai-section__label {
  font-family: var(--ai-font-display);
  font-size: var(--ai-size-small);
  font-weight: 600;
  color: var(--ai-accent-glow);
  letter-spacing: 0.15em;
  text-align: center;
  margin-bottom: 12px;
}
.ai-section__title {
  font-family: var(--ai-font-heading);
  font-size: var(--ai-size-section-title);
  font-weight: 800;
  color: var(--white);
  text-align: center;
  line-height: var(--ai-leading-tight);
  margin-bottom: 56px;
}

/* ========================================
   課題セクション（#problems）
   ======================================== */
#problems { background: var(--ai-bg-secondary); }

.ai-problems__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  max-width: 1080px;
  margin: 0 auto;
}

/* 課題カード */
.ai-problem-card {
  background: var(--ai-bg-card);
  border: 1px solid rgba(99, 102, 241, 0.15);
  border-radius: 16px;
  padding: 36px 28px;
  transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
}
.ai-problem-card:hover {
  transform: translateY(-4px);
  border-color: var(--ai-accent-primary);
  box-shadow: 0 0 24px rgba(99, 102, 241, 0.12), 0 8px 24px rgba(0, 0, 0, 0.2);
}

/* アイコン */
.ai-problem-card__icon {
  width: 48px; height: 48px;
  display: flex; align-items: center; justify-content: center;
  background: var(--ai-danger-soft);
  border-radius: 12px;
  color: var(--ai-danger);
  margin-bottom: 20px;
}

/* カード見出し */
.ai-problem-card__title {
  font-family: var(--ai-font-heading);
  font-size: var(--ai-size-card-title);
  font-weight: 700;
  color: var(--white);
  line-height: 1.5;
  margin-bottom: 20px;
}

/* 箇条書き */
.ai-problem-card__list {
  display: flex; flex-direction: column; gap: 10px;
}
.ai-problem-card__list li {
  position: relative;
  padding-left: 18px;
  font-size: var(--ai-size-small);
  color: var(--ai-text-secondary);
  line-height: 1.7;
}
.ai-problem-card__list li::before {
  content: '';
  position: absolute; left: 0; top: 8px;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--ai-danger);
  opacity: 0.6;
}

/* レスポンシブ */
@media (max-width: 1199px) {
  .ai-problems__grid { grid-template-columns: repeat(3, 1fr); gap: 20px; }
}
@media (max-width: 767px) {
  .ai-problems__grid { grid-template-columns: 1fr; gap: 16px; }
  .ai-problem-card { padding: 28px 24px; }
}

/* ========================================
   社長メッセージ（#message）
   ======================================== */
.ai-message {
  position: relative;
  background: var(--ai-bg-primary);
  text-align: center;
  overflow: hidden;
}

/* 中央グロウ */
.ai-message__glow {
  position: absolute;
  top: 50%; left: 50%;
  width: 700px; height: 700px;
  transform: translate(-50%, -50%);
  background: var(--ai-gradient-glow);
  pointer-events: none;
}

/* 見出し */
.ai-message__heading {
  font-family: var(--ai-font-heading);
  font-size: var(--ai-size-section-title);
  font-weight: 800;
  color: var(--white);
  line-height: 1.5;
  margin-bottom: 36px;
  position: relative;
}
.ai-gold { color: var(--ai-text-accent); }

/* 区切り線 */
.ai-message__divider {
  width: 60px; height: 2px;
  background: var(--ai-gradient-accent);
  margin: 0 auto 36px;
  border-radius: 1px;
}

/* 本文 */
.ai-message__body {
  max-width: 640px; margin: 0 auto 56px;
  position: relative;
}
.ai-message__body p {
  font-size: clamp(0.95rem, 1.5vw, 1.1rem);
  color: var(--ai-text-secondary);
  line-height: var(--ai-leading-normal);
  margin-bottom: 16px;
}
.ai-message__body p:last-child { margin-bottom: 0; }
.ai-message__body strong {
  color: var(--white);
  font-weight: 700;
}

/* 階段図解 */
.ai-stairs {
  display: flex;
  align-items: flex-end;
  justify-content: center;
  gap: 0;
  max-width: 720px;
  margin: 0 auto 48px;
  position: relative;
}

.ai-stairs__step {
  display: flex; flex-direction: column; align-items: center;
  gap: 12px;
  padding: 24px 20px;
  background: var(--ai-bg-card);
  border: 1px solid rgba(99, 102, 241, 0.15);
  border-radius: 14px;
  min-width: 160px;
  transition: box-shadow 0.3s;
}
/* ステップ状に高さを上げる */
.ai-stairs__step--1 { transform: translateY(40px); }
.ai-stairs__step--2 { transform: translateY(20px); }
.ai-stairs__step--3 { transform: translateY(0); box-shadow: 0 0 30px rgba(99, 102, 241, 0.15); border-color: var(--ai-accent-primary); }

.ai-stairs__icon {
  width: 48px; height: 48px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(99, 102, 241, 0.1);
  border-radius: 12px;
  color: var(--ai-accent-glow);
}
.ai-stairs__step--3 .ai-stairs__icon {
  background: rgba(99, 102, 241, 0.2);
  color: var(--gold);
}

.ai-stairs__label {
  font-family: var(--ai-font-heading);
  font-size: var(--ai-size-small);
  font-weight: 700;
  color: var(--white);
}
.ai-stairs__step--3 .ai-stairs__label { color: var(--gold); }

/* 矢印 */
.ai-stairs__arrow {
  width: 40px;
  display: flex; align-items: center; justify-content: center;
  color: var(--ai-accent-primary);
  font-size: 1.5rem;
  flex-shrink: 0;
  align-self: center;
}
.ai-stairs__arrow::after {
  content: '→';
  background: var(--ai-gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 700;
}

/* 補足メッセージ */
.ai-message__footnote {
  font-size: var(--ai-size-small);
  color: var(--ai-text-secondary);
  max-width: 600px;
  margin: 0 auto;
  position: relative;
}

@media (max-width: 767px) {
  .ai-stairs {
    flex-direction: column;
    align-items: center;
    gap: 8px;
  }
  .ai-stairs__step { min-width: 200px; width: 100%; max-width: 280px; }
  .ai-stairs__step--1,
  .ai-stairs__step--2,
  .ai-stairs__step--3 { transform: none; }
  .ai-stairs__arrow { transform: rotate(90deg); width: auto; height: 32px; }
}

/* ========================================
   4ステージ支援モデル（#approach）
   ======================================== */
#approach { background: var(--ai-bg-secondary); }

.ai-stages {
  display: flex;
  align-items: stretch;
  justify-content: center;
  gap: 0;
  max-width: 1080px;
  margin: 0 auto;
}

.ai-stage {
  flex: 1;
  display: flex; flex-direction: column; align-items: center;
  text-align: center;
  padding: 32px 20px;
  background: var(--ai-bg-card);
  border: 1px solid rgba(99, 102, 241, 0.15);
  border-radius: 16px;
  transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
}
.ai-stage:hover {
  transform: translateY(-4px);
  border-color: var(--ai-accent-primary);
  box-shadow: 0 0 24px rgba(99, 102, 241, 0.12);
}

/* ステージバッジ */
.ai-stage__badge {
  font-family: var(--ai-font-display);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--ai-accent-glow);
  background: rgba(99, 102, 241, 0.1);
  padding: 4px 14px;
  border-radius: 20px;
  margin-bottom: 20px;
}

/* アイコン */
.ai-stage__icon {
  width: 56px; height: 56px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(99, 102, 241, 0.08);
  border-radius: 14px;
  color: var(--ai-accent-glow);
  margin-bottom: 20px;
}

/* タイトル */
.ai-stage__title {
  font-family: var(--ai-font-heading);
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--white);
  margin-bottom: 6px;
}

/* サービス名 */
.ai-stage__service {
  font-size: var(--ai-size-small);
  font-weight: 600;
  color: var(--ai-text-accent);
  margin-bottom: 14px;
}

/* 説明 */
.ai-stage__desc {
  font-size: var(--ai-size-small);
  color: var(--ai-text-secondary);
  line-height: 1.7;
}

/* 矢印 */
.ai-stages__arrow {
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  width: 40px;
  opacity: 0.7;
}

/* レスポンシブ */
@media (max-width: 767px) {
  .ai-stages {
    flex-direction: column;
    align-items: center;
    gap: 8px;
  }
  .ai-stage { width: 100%; max-width: 320px; }
  .ai-stages__arrow {
    transform: rotate(90deg);
    width: auto; height: 32px;
  }
}

/* ========================================
   サービスカード（#services）
   ======================================== */
#services { background: var(--ai-bg-primary); }

.ai-services__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  max-width: 1080px;
  margin: 0 auto;
}

.ai-service-card {
  position: relative;
  background: var(--ai-bg-card);
  border: 1px solid rgba(99, 102, 241, 0.15);
  border-radius: 16px;
  padding: 32px 28px 24px;
  display: flex; flex-direction: column;
  overflow: hidden;
  transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
}
.ai-service-card:hover {
  transform: translateY(-4px);
  border-color: var(--ai-accent-primary);
  box-shadow: 0 0 24px rgba(99, 102, 241, 0.12), 0 8px 24px rgba(0, 0, 0, 0.2);
}

/* 上部アクセントライン */
.ai-service-card__accent {
  position: absolute; top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--ai-gradient-accent);
}

/* ヘッダー（番号 + ステージ） */
.ai-service-card__head {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 16px;
}
.ai-service-card__num {
  font-family: var(--ai-font-display);
  font-size: 0.8rem;
  font-weight: 800;
  color: var(--ai-accent-glow);
  letter-spacing: 0.05em;
}
.ai-service-card__stage {
  font-family: var(--ai-font-display);
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--ai-accent-secondary);
  background: rgba(139, 92, 246, 0.1);
  padding: 3px 10px;
  border-radius: 12px;
  letter-spacing: 0.05em;
}

/* タイトル */
.ai-service-card__title {
  font-family: var(--ai-font-heading);
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--white);
  margin-bottom: 8px;
}

/* キャッチ */
.ai-service-card__catch {
  font-size: var(--ai-size-small);
  color: var(--ai-text-secondary);
  margin-bottom: 20px;
}

/* こんな方へ */
.ai-service-card__for {
  margin-bottom: 16px;
}
.ai-service-card__for-label {
  display: block;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--ai-accent-glow);
  letter-spacing: 0.05em;
  margin-bottom: 8px;
}
.ai-service-card__for ul {
  display: flex; flex-direction: column; gap: 6px;
}
.ai-service-card__for li {
  position: relative;
  padding-left: 16px;
  font-size: var(--ai-size-small);
  color: var(--ai-text-secondary);
  line-height: 1.6;
}
.ai-service-card__for li::before {
  content: '';
  position: absolute; left: 0; top: 7px;
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--ai-accent-primary);
  opacity: 0.6;
}

/* 詳細 */
.ai-service-card__detail {
  margin-bottom: 20px;
  flex: 1;
}
.ai-service-card__detail p {
  font-size: var(--ai-size-small);
  color: var(--ai-text-secondary);
  line-height: 1.7;
  margin-bottom: 6px;
}
.ai-service-card__detail p:last-child { margin-bottom: 0; }
.ai-service-card__detail strong {
  color: var(--ai-text-primary);
  font-weight: 600;
}

/* フッター（形態 + 価格） */
.ai-service-card__footer {
  display: flex; align-items: center; justify-content: space-between;
  padding-top: 16px;
  border-top: 1px solid rgba(99, 102, 241, 0.1);
}
.ai-service-card__type {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--ai-text-secondary);
  background: rgba(99, 102, 241, 0.08);
  padding: 4px 12px;
  border-radius: 8px;
}
.ai-service-card__price {
  font-family: var(--ai-font-display);
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--ai-text-accent);
}
.ai-service-card__price small {
  font-size: 0.7em;
  font-weight: 600;
  color: var(--ai-text-secondary);
}

/* レスポンシブ */
@media (max-width: 767px) {
  .ai-services__grid { grid-template-columns: 1fr; gap: 16px; }
  .ai-service-card { padding: 28px 22px 20px; }
}

/* ========================================
   実績セクション（#results）
   ======================================== */
.ai-results {
  position: relative;
  background: var(--ai-bg-primary);
  overflow: hidden;
}
.ai-results__particles {
  position: absolute; inset: 0;
  background-image: radial-gradient(circle, rgba(201, 168, 76, 0.12) 1px, transparent 1px);
  background-size: 50px 50px;
  opacity: 0.5;
  pointer-events: none;
}

/* 数値エリア */
.ai-results__numbers {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 48px;
  margin-bottom: 72px;
  position: relative;
}
.ai-results__item { text-align: center; }
.ai-results__prefix {
  font-family: var(--ai-font-display);
  font-size: var(--ai-size-impact-number);
  font-weight: 800;
  color: var(--ai-text-accent);
  line-height: 1;
}
.ai-results__num {
  font-family: var(--ai-font-display);
  font-size: var(--ai-size-impact-number);
  font-weight: 800;
  color: var(--ai-text-accent);
  text-shadow: 0 0 40px rgba(201, 168, 76, 0.35);
  line-height: 1;
}
.ai-results__unit {
  font-family: var(--ai-font-heading);
  font-size: clamp(1rem, 2vw, 1.5rem);
  font-weight: 700;
  color: var(--ai-text-secondary);
  margin-left: 4px;
}
.ai-results__unit small { font-size: 0.8em; }
.ai-results__label {
  display: block;
  font-size: var(--ai-size-small);
  color: var(--ai-text-secondary);
  margin-top: 8px;
}
.ai-results__divider {
  width: 1px; height: 60px;
  background: linear-gradient(to bottom, transparent, rgba(201, 168, 76, 0.25), transparent);
}

/* 事例サブ見出し */
.ai-results__sub-heading {
  font-family: var(--ai-font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--white);
  text-align: center;
  margin-bottom: 32px;
}

/* 事例カードグリッド */
.ai-cases__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  max-width: 1080px;
  margin: 0 auto;
  position: relative;
}

.ai-case-card {
  background: var(--ai-bg-card);
  border: 1px solid rgba(99, 102, 241, 0.15);
  border-radius: 16px;
  overflow: hidden;
  transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
}
.ai-case-card:hover {
  transform: translateY(-4px);
  border-color: var(--ai-accent-primary);
  box-shadow: 0 0 24px rgba(99, 102, 241, 0.12);
}

.ai-case-card__header {
  display: flex; align-items: center; gap: 12px;
  padding: 16px 24px;
  border-bottom: 1px solid rgba(99, 102, 241, 0.08);
}
.ai-case-card__industry {
  font-size: 0.75rem; font-weight: 700;
  color: var(--ai-accent-glow);
  background: rgba(99, 102, 241, 0.1);
  padding: 3px 10px; border-radius: 8px;
}
.ai-case-card__size {
  font-size: 0.75rem; color: var(--ai-text-secondary);
}

.ai-case-card__body { padding: 24px; }

.ai-case-card__block { margin-bottom: 4px; }
.ai-case-card__tag {
  display: inline-block;
  font-size: 0.7rem; font-weight: 700;
  padding: 2px 10px; border-radius: 6px;
  margin-bottom: 8px;
  letter-spacing: 0.05em;
}
.ai-case-card__tag--before {
  background: var(--ai-danger-soft); color: var(--ai-danger);
}
.ai-case-card__tag--after {
  background: rgba(99, 102, 241, 0.1); color: var(--ai-accent-glow);
}
.ai-case-card__block p {
  font-size: var(--ai-size-small);
  color: var(--ai-text-secondary);
  line-height: 1.7;
}
.ai-case-card__arrow {
  text-align: center;
  font-size: 1rem;
  color: var(--ai-accent-primary);
  padding: 8px 0;
  opacity: 0.5;
}

@media (max-width: 1199px) {
  .ai-cases__grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 767px) {
  .ai-results__numbers { flex-direction: column; gap: 28px; }
  .ai-results__divider { width: 60px; height: 1px; }
  .ai-cases__grid { grid-template-columns: 1fr; gap: 16px; }
}

/* ========================================
   なぜソウゾウか（#why-souzo）
   ======================================== */
#why-souzo { background: var(--ai-bg-secondary); }

.ai-why__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  max-width: 900px;
  margin: 0 auto;
}

.ai-why-card {
  background: var(--ai-bg-card);
  border: 1px solid rgba(99, 102, 241, 0.15);
  border-radius: 16px;
  padding: 32px 28px;
  transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
}
.ai-why-card:hover {
  transform: translateY(-4px);
  border-color: var(--ai-accent-primary);
  box-shadow: 0 0 24px rgba(99, 102, 241, 0.12);
}

.ai-why-card__icon {
  width: 52px; height: 52px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(201, 168, 76, 0.08);
  border-radius: 14px;
  color: var(--gold);
  margin-bottom: 20px;
}

.ai-why-card__title {
  font-family: var(--ai-font-heading);
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--white);
  margin-bottom: 12px;
}

.ai-why-card__desc {
  font-size: var(--ai-size-small);
  color: var(--ai-text-secondary);
  line-height: 1.8;
}

@media (max-width: 767px) {
  .ai-why__grid { grid-template-columns: 1fr; gap: 16px; }
  .ai-why-card { padding: 28px 24px; }
}

/* ========================================
   FAQ（#faq）
   ======================================== */
#faq { background: var(--ai-bg-primary); }

.ai-faq {
  max-width: 760px;
  margin: 0 auto;
  display: flex; flex-direction: column;
  gap: 0;
}

.ai-faq__item {
  border-bottom: 1px solid rgba(99, 102, 241, 0.12);
}
.ai-faq__item:first-child {
  border-top: 1px solid rgba(99, 102, 241, 0.12);
}

.ai-faq__q {
  display: flex; align-items: center; justify-content: space-between;
  padding: 22px 4px;
  font-family: var(--ai-font-heading);
  font-size: clamp(0.95rem, 1.5vw, 1.05rem);
  font-weight: 700;
  color: var(--white);
  cursor: pointer;
  list-style: none;
  transition: color 0.2s;
}
.ai-faq__q::-webkit-details-marker { display: none; }
.ai-faq__q::after {
  content: '+';
  flex-shrink: 0;
  width: 28px; height: 28px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem;
  font-weight: 400;
  color: var(--ai-accent-glow);
  border: 1px solid rgba(99, 102, 241, 0.2);
  border-radius: 50%;
  margin-left: 16px;
  transition: transform 0.3s, background 0.3s;
}
.ai-faq__item[open] .ai-faq__q::after {
  content: '−';
  background: rgba(99, 102, 241, 0.1);
  transform: rotate(180deg);
}
.ai-faq__q:hover { color: var(--ai-accent-glow); }

.ai-faq__a {
  padding: 0 4px 22px;
  animation: faqOpen 0.3s ease-out;
}
.ai-faq__a p {
  font-size: var(--ai-size-body);
  color: var(--ai-text-secondary);
  line-height: var(--ai-leading-normal);
}

@keyframes faqOpen {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ========================================
   CTA（#contact）
   ======================================== */
.ai-cta {
  position: relative;
  overflow: hidden;
  text-align: center;
}

.ai-cta__bg {
  position: absolute; inset: 0;
  background: linear-gradient(135deg, #1E1B4B 0%, #312E81 30%, #4C1D95 60%, #1E1B4B 100%);
  opacity: 0.85;
}
/* グロウオーバーレイ */
.ai-cta::before {
  content: '';
  position: absolute;
  top: 50%; left: 50%;
  width: 500px; height: 500px;
  transform: translate(-50%, -50%);
  background: radial-gradient(ellipse at center, rgba(201, 168, 76, 0.1) 0%, transparent 70%);
  pointer-events: none;
}

.ai-cta__inner {
  position: relative; z-index: 1;
  max-width: 640px;
  margin: 0 auto;
}

.ai-cta__heading {
  font-family: var(--ai-font-heading);
  font-size: var(--ai-size-section-title);
  font-weight: 800;
  color: var(--white);
  line-height: 1.5;
  margin-bottom: 40px;
}

.ai-cta__buttons {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

/* ゴーストボタン */
.ai-btn--ghost {
  background: transparent;
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.3);
}
.ai-btn--ghost:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.5);
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
}

/* 安心メッセージ */
.ai-cta__trust {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
}
.ai-cta__trust li {
  position: relative;
  padding-left: 20px;
  font-size: var(--ai-size-small);
  color: rgba(255, 255, 255, 0.7);
}
.ai-cta__trust li::before {
  content: '\2713';
  position: absolute; left: 0; top: 0;
  color: var(--gold);
  font-weight: 700;
}

@media (max-width: 767px) {
  .ai-cta__buttons { flex-direction: column; align-items: stretch; }
  .ai-cta__buttons .ai-btn--lg { width: 100%; }
  .ai-cta__trust { flex-direction: column; gap: 10px; align-items: center; }
}

/* ========================================
   prefers-reduced-motion 対応
   ======================================== */
@media (prefers-reduced-motion: reduce) {
  .ai-hero__particles { animation: none; }
  .ai-hero__label,
  .ai-hero__line,
  .ai-hero__sub,
  .ai-hero__cta-wrap,
  .ai-hero__trust {
    opacity: 1;
    animation: none;
  }
  .ai-section {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ========================================
   FOOTER（ダークテーマ版）
   ======================================== */
.footer {
  background: var(--ai-bg-primary);
  border-top: 1px solid rgba(99, 102, 241, 0.1);
  padding: 48px 0 24px;
}
.footer__inner {
  display: flex; align-items: flex-start; justify-content: space-between;
  gap: 32px;
  padding-bottom: 32px;
  border-bottom: 1px solid rgba(99, 102, 241, 0.08);
}
.footer__logo {
  font-family: var(--ai-font-heading);
  font-size: 1.3rem; font-weight: 800;
  color: var(--white);
  letter-spacing: 0.08em;
}
.footer__company {
  font-size: var(--ai-size-small);
  color: var(--ai-text-secondary);
  margin-top: 4px;
}
.footer__nav {
  display: flex; flex-wrap: wrap; gap: 16px 24px;
}
.footer__nav a {
  font-size: var(--ai-size-small);
  color: var(--ai-text-secondary);
  transition: color 0.2s;
}
.footer__nav a:hover { color: var(--white); }
.footer__copy {
  font-size: 0.75rem;
  color: rgba(148, 163, 184, 0.5);
  text-align: center;
  padding-top: 24px;
}

@media (max-width: 767px) {
  .footer__inner { flex-direction: column; align-items: center; text-align: center; }
  .footer__nav { justify-content: center; }
}

/* ========================================
   モバイル固定CTA
   ======================================== */
.sticky-cta {
  position: fixed; bottom: 0; left: 0; width: 100%;
  padding: 12px 16px;
  background: rgba(10, 14, 26, 0.9);
  backdrop-filter: blur(8px);
  border-top: 1px solid rgba(99, 102, 241, 0.1);
  z-index: 90;
  transform: translateY(100%);
  transition: transform 0.3s;
  display: none;
}
.sticky-cta--visible { transform: translateY(0); }
.sticky-cta .btn,
.sticky-cta .ai-btn { width: 100%; }

@media (max-width: 768px) {
  .sticky-cta { display: block; }
}

.btn--primary {
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--gold); color: var(--navy);
  font-family: var(--ai-font-heading);
  font-weight: 700; border-radius: 8px;
  cursor: pointer; border: none;
  transition: box-shadow 0.3s;
}
.btn--sm { padding: 12px 24px; font-size: 0.9rem; }

/* ========================================
   レスポンシブ — ファーストビュー
   ======================================== */
@media (max-width: 767px) {
  .ai-hero {
    padding: 100px 20px 60px;
    min-height: auto;
  }
  .ai-hero__label { margin-bottom: 24px; }
  .ai-hero__catch { margin-bottom: 20px; }
  .ai-hero__sub { margin-bottom: 32px; }
  .ai-hero__cta-wrap { margin-bottom: 40px; }
  .ai-hero__trust {
    gap: 20px;
    flex-wrap: wrap;
  }
  .ai-hero__trust-divider { height: 32px; }
}