/* ============================================================
   トップページ専用スタイル
   ============================================================ */

/* ---------- ヒーローセクション ---------- */
.hero {
  min-height: 100svh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  /* 背景画像＋グラデーションオーバーレイ */
  background:
    linear-gradient(145deg,
      rgba(0, 38, 66, 0.72) 0%,
      rgba(0, 82, 136, 0.60) 50%,
      rgba(0, 168, 232, 0.55) 100%
    ),
    url('../img/hero_bg.jpg') center / cover no-repeat;
  padding-top: var(--header-height);
}

/* 背景装飾：大きな円と波紋 */
.hero::before {
  content: '';
  position: absolute;
  right: -10%;
  top: -20%;
  width: 70vmin;
  height: 70vmin;
  background: radial-gradient(circle, rgba(0,168,232,0.2) 0%, transparent 70%);
  border-radius: 0;
  animation: hero-pulse 6s ease-in-out infinite;
}

.hero::after {
  content: '';
  position: absolute;
  left: -5%;
  bottom: -10%;
  width: 50vmin;
  height: 50vmin;
  background: radial-gradient(circle, rgba(255,255,255,0.06) 0%, transparent 70%);
  border-radius: 0;
  animation: hero-pulse 8s ease-in-out 2s infinite;
}

@keyframes hero-pulse {
  0%, 100% { transform: scale(1); opacity: 0.7; }
  50% { transform: scale(1.1); opacity: 1; }
}

.hero-particles {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}

/* 浮遊する雪・水滴パーティクル */
.hero-particles span {
  position: absolute;
  display: block;
  width: 6px;
  height: 6px;
  background: rgba(255,255,255,0.25);
  border-radius: 0;
  animation: float-up linear infinite;
}

@keyframes float-up {
  0% { transform: translateY(100vh) scale(0); opacity: 0; }
  10% { opacity: 1; }
  90% { opacity: 0.5; }
  100% { transform: translateY(-10vh) scale(1); opacity: 0; }
}

.hero-inner {
  position: relative;
  z-index: 1;
  width: 100%;
}

.hero-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

/* テキスト側 */
.hero-text {
  max-width: 700px;
  width: 100%;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.25);
  border-radius: 0;
  color: rgba(255,255,255,0.9);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-md);
  backdrop-filter: blur(8px);
  animation: fadeInDown 0.8s ease forwards;
}

.hero-badge .dot {
  width: 8px;
  height: 8px;
  background: var(--color-accent);
  border-radius: 0;
  animation: blink 1.5s ease-in-out infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 700;
  color: white;
  line-height: 1.55;
  margin-bottom: var(--space-md);
  animation: fadeInUp 0.9s ease 0.2s both;
}

.hero-title .highlight {
  position: relative;
  color: var(--color-accent);
  display: inline-block;
}

.hero-title .highlight::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--color-accent);
  border-radius: 0;
  opacity: 0.5;
}

.hero-desc {
  font-size: clamp(0.9375rem, 1.5vw, 1.0625rem);
  color: rgba(255,255,255,0.82);
  line-height: 2;
  margin-bottom: var(--space-lg);
  animation: fadeInUp 0.9s ease 0.4s both;
}

.hero-actions {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
  justify-content: center; /* ビジュアル削除後のセンター寄せ */
  animation: fadeInUp 0.9s ease 0.6s both;
}

/* ビジュアル側 */
.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
  animation: fadeInRight 0.9s ease 0.3s both;
}

/* ヒーロービジュアルカード */
.hero-card-stack {
  position: relative;
  width: 100%;
  max-width: 460px;
}

.hero-card-main {
  background: rgba(0, 20, 50, 0.75);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255,255,255,0.25);
  border-radius: 0;
  padding: var(--space-lg);
  color: white;
  position: relative;
  z-index: 2;
  box-shadow: 0 8px 32px rgba(0,0,0,0.4);
}

.hero-card-bg {
  position: absolute;
  top: 16px;
  left: 16px;
  right: -16px;
  bottom: -16px;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 0;
  z-index: 1;
}

/* 消雪事業強調バナー */
.snow-highlight {
  display: flex;
  align-items: center;
  gap: 14px;
  background: linear-gradient(135deg, rgba(0,168,232,0.2) 0%, rgba(255,255,255,0.08) 100%);
  border: 1px solid rgba(0,168,232,0.4);
  border-radius: 0;
  padding: var(--space-sm) var(--space-md);
  margin-bottom: var(--space-md);
}

.snow-highlight__icon {
  font-size: 2rem;
  flex-shrink: 0;
}

.snow-highlight__text {}

.snow-highlight__label {
  font-size: 0.6875rem;
  font-family: var(--font-en);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-accent);
  font-weight: 700;
}

.snow-highlight__title {
  font-size: 1.0625rem;
  font-weight: 700;
  color: white;
}

/* スタッツリスト */
.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-sm);
  margin-top: var(--space-md);
}

.hero-stat {
  text-align: center;
  padding: var(--space-sm);
  background: rgba(0,168,232,0.18);
  border: 1px solid rgba(0,168,232,0.35);
  border-radius: 0;
}

.hero-stat__number {
  font-family: var(--font-en);
  font-size: 1.5rem;
  font-weight: 800;
  color: #6FD6FF;
  line-height: 1;
  margin-bottom: 4px;
  text-shadow: 0 0 12px rgba(0,168,232,0.7);
}

.hero-stat__label {
  font-size: 0.6875rem;
  color: rgba(255,255,255,0.9);
  font-weight: 600;
}

/* 事業カード */
.hero-businesses {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
  margin-top: var(--space-sm);
}

.hero-biz-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8125rem;
  font-weight: 600;
  color: white;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.18);
  padding: 6px 10px;
  text-shadow: 0 1px 3px rgba(0,0,0,0.5);
}

.hero-biz-item__icon {
  width: 28px;
  height: 28px;
  background: rgba(255,255,255,0.1);
  border-radius: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.875rem;
  flex-shrink: 0;
}

/* スクロール誘導 */
.hero-scroll {
  position: absolute;
  bottom: var(--space-lg);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: rgba(255,255,255,0.55);
  font-size: 0.6875rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  font-family: var(--font-en);
  z-index: 2;
  animation: fadeIn 1s ease 1s both;
}

.hero-scroll__line {
  width: 1px;
  height: 50px;
  background: linear-gradient(to bottom, rgba(255,255,255,0.5), transparent);
  animation: scroll-line 2s ease-in-out infinite;
}

@keyframes scroll-line {
  0% { transform: scaleY(0); transform-origin: top; }
  50% { transform: scaleY(1); transform-origin: top; }
  51% { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ---------- 消雪事業フィーチャーセクション ---------- */
.snow-section {
  padding: var(--space-3xl) 0;
  /* 実写画像＋濃いオーバーレイ */
  background:
    linear-gradient(160deg,
      rgba(0, 20, 60, 0.85) 0%,
      rgba(0, 55, 100, 0.78) 50%,
      rgba(0, 30, 70, 0.85) 100%
    ),
    url('../img/snow_section_img.jpg') center / cover no-repeat;
  position: relative;
  overflow: hidden; /* fade-in-right/leftアニメーションのはみ出し防止 */
  color: white;
}

/* セクション上部の装飾（波形は廃止し、シンプルな境界線に） */
.snow-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 6px;
  background: linear-gradient(90deg, var(--color-accent) 0%, rgba(0,168,232,0.3) 100%);
  z-index: 2;
  pointer-events: none;
}

.snow-section::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 80px;
  background: linear-gradient(to top, rgba(247,250,253,0.15) 0%, transparent 100%);
  pointer-events: none;
}

.snow-section-inner {
  position: relative;
  z-index: 1;
  padding: 60px var(--space-md);
}

.snow-feature-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: center;
}

.snow-feature-text {}

.snow-feature-text .section-label {
  color: var(--color-accent);
  text-shadow: 0 1px 4px rgba(0,0,0,0.5);
}

.snow-feature-text .section-title {
  color: white;
  text-shadow: 0 2px 8px rgba(0,0,0,0.6);
}

.snow-feature-text .section-subtitle {
  color: rgba(255,255,255,0.92);
  text-shadow: 0 1px 4px rgba(0,0,0,0.5);
  text-align: left;
}

.snow-feature-points {
  margin-top: var(--space-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.snow-point {
  display: flex;
  gap: var(--space-sm);
  align-items: flex-start;
}

.snow-point__icon {
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  margin-top: 2px;
}

.snow-point__body {}

.snow-point__title {
  font-weight: 700;
  font-size: 1rem;
  color: white;
  margin-bottom: 4px;
}

.snow-point__desc {
  font-size: 0.875rem;
  color: rgba(255,255,255,0.72);
  line-height: 1.7;
}

/* 消雪ビジュアルカード */
.snow-visual-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-sm);
}

/* 実写番号付き画像パネル */
.snow-img-panel {
  grid-column: span 2;
  border-radius: 0;
  overflow: hidden;
  position: relative;
  aspect-ratio: 16/7;
  box-shadow: 0 8px 32px rgba(0,0,0,0.45);
  margin-bottom: var(--space-sm);
}

.snow-img-panel img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.6s ease;
}

.snow-img-panel:hover img {
  transform: scale(1.03);
}

.snow-img-panel__caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(to top, rgba(0,20,60,0.9) 0%, transparent 100%);
  padding: var(--space-md);
  color: white;
  font-size: 0.875rem;
  font-weight: 600;
  display: flex;
  align-items: flex-end;
  gap: 8px;
}

.snow-vcard {
  background: rgba(255,255,255,0.12);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,0.25);
  border-radius: 0;
  padding: var(--space-md);
  transition: transform var(--transition-base), background var(--transition-base);
}

.snow-vcard:hover {
  transform: translateY(-4px);
  background: rgba(255,255,255,0.18);
}

.snow-vcard__icon {
  font-size: 2.25rem;
  margin-bottom: var(--space-xs);
}

.snow-vcard__title {
  font-weight: 700;
  color: white;
  font-size: 0.9375rem;
  margin-bottom: 6px;
  text-shadow: 0 1px 4px rgba(0,0,0,0.5);
}

.snow-vcard__desc {
  font-size: 0.8125rem;
  color: rgba(255,255,255,0.85);
  line-height: 1.7;
}

.snow-vcard--large {
  grid-column: span 2;
}

/* ---------- 強み・特徴セクション ---------- */
.strengths-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

.strength-card {
  background: white;
  border-radius: 0;
  padding: var(--space-lg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  position: relative;
  overflow: hidden;
}

.strength-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-accent) 100%);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
}

.strength-card:hover::before {
  transform: scaleX(1);
}

.strength-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.strength-card__number {
  font-family: var(--font-en);
  font-size: 3rem;
  font-weight: 900;
  color: var(--color-gray-100);
  line-height: 1;
  margin-bottom: var(--space-xs);
  transition: color var(--transition-base);
}

.strength-card:hover .strength-card__number {
  color: var(--color-accent-2);
}

.strength-card__icon {
  font-size: 2rem;
  margin-bottom: var(--space-sm);
}

.strength-card__title {
    font-size: 1.425rem;
    font-weight: 700;
    color: var(--color-primary-dark);
    margin-bottom: var(--space-xs);
    margin-top: 20px;
}

.strength-card__desc {
  text-align: justify;
  font-size: 1rem;
  color: var(--color-text-muted);
  line-height: 1.8;
}

/* ---------- 事業紹介セクション ---------- */
.services-section {
  padding: var(--space-3xl) 0;
  background: var(--color-off-white);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-sm);
}

.service-card {
  background: white;
  border-radius: 0;
  padding: var(--space-lg) var(--space-md);
  text-align: center;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
  cursor: default;
}

.service-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary-light);
}

.service-card__icon {
  font-size: 2.5rem;
  margin-bottom: var(--space-sm);
  display: block;
}

.service-card__title {
font-size: 1.425rem;
    font-weight: 700;
    color: var(--color-primary-dark);
    margin-bottom: 10px;
    text-align: left;
    line-height: 1.4;
}

.service-card__desc {
    text-align: justify;
    font-size: 1rem;
    color: var(--color-text-muted);
    line-height: 1.8;
}

/* ---------- エリアセクション ---------- */
.area-section {
  padding: var(--space-3xl) 0;
  overflow: hidden; /* fade-in-left/rightアニメーションのはみ出し防止 */
}

.area-section .section-subtitle {
  text-align: left;
}

.area-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: center;
}

.area-map-placeholder {
  border-radius: 0;
  aspect-ratio: 4/3;
  overflow: hidden; /* 画像をボックス内にくり抜く */
  border: 2px solid var(--color-border);
  box-shadow: 0 8px 32px rgba(0,0,0,0.12);
}

.area-map-placeholder img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
  transition: transform 0.6s ease;
}

.area-map-placeholder:hover img {
  transform: scale(1.03);
}

.area-prefectures {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-top: var(--space-md);
}

.area-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  background: var(--color-accent-2);
  border: 1px solid var(--color-gray-200);
  border-radius: 0;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-primary);
  transition: background var(--transition-fast), border-color var(--transition-fast);
}

.area-tag:hover {
  background: var(--color-primary-light);
  border-color: var(--color-primary-light);
  color: white;
}

/* ---------- CTAセクション ---------- */
.cta-section {
  padding: var(--space-3xl) 0;
  /* 背景画像＋グラデーションオーバーレイ */
  background:
    linear-gradient(135deg,
      rgba(0, 38, 66, 0.80) 0%,
      rgba(0, 82, 136, 0.70) 60%,
      rgba(0, 168, 232, 0.65) 100%
    ),
    url('../img/cta_bg.jpg') center / cover no-repeat;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 30% 50%, rgba(0,168,232,0.2) 0%, transparent 60%),
              radial-gradient(circle at 70% 50%, rgba(255,255,255,0.06) 0%, transparent 60%);
}

.cta-inner {
  position: relative;
  z-index: 1;
  text-align: center;
}

.cta-title {
  font-family: var(--font-serif);
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  color: white;
  line-height: 1.4;
  margin-bottom: var(--space-sm);
}

.cta-desc {
  font-size: 1rem;
  color: rgba(255,255,255,0.8);
  max-width: 560px;
  margin: 0 auto var(--space-lg);
  line-height: 1.9;
}

.cta-buttons {
  display: flex;
  gap: var(--space-sm);
  justify-content: center;
  flex-wrap: wrap;
}

/* ---------- ニュースセクション ---------- */
.news-section {
  padding: var(--space-3xl) 0;
}

.news-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.news-item {
  display: flex;
  gap: var(--space-md);
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--color-border);
  align-items: flex-start;
  transition: background var(--transition-fast);
  text-decoration: none;
  color: inherit;
}

.news-item:hover {
  color: var(--color-primary);
}

.news-item:first-child {
  border-top: 1px solid var(--color-border);
}

.news-date {
  font-family: var(--font-en);
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  flex-shrink: 0;
  padding-top: 3px;
  min-width: 100px;
}

.news-category {
  flex-shrink: 0;
  padding: 3px 10px;
  font-size: 0.6875rem;
  font-weight: 700;
  border-radius: 0;
  background: var(--color-accent-2);
  color: var(--color-primary);
  white-space: nowrap;
  margin-top: 1px;
  height: fit-content;
}

.news-title {
  font-size: 0.9375rem;
  line-height: 1.7;
  flex: 1;
}

.news-more {
  text-align: center;
  margin-top: var(--space-lg);
}

/* ---------- アニメーションキーフレーム ---------- */
@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInRight {
  from { opacity: 0; transform: translateX(40px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* ---------- レスポンシブ (トップページ) ---------- */
@media (max-width: 1024px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .hero-content {
    grid-template-columns: 1fr;
  }

  .hero-visual {
    display: none;
  }

  .snow-feature-grid {
    grid-template-columns: 1fr;
  }

  .snow-visual-cards {
    grid-template-columns: 1fr;
  }

  .snow-img-panel {
    grid-column: span 1; /* 1列グリッドに合わせてリセット */
  }

  .snow-vcard--large {
    grid-column: span 1;
  }

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

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

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

@media (max-width: 480px) {
  .hero-actions {
    flex-direction: column;
  }

  .hero-actions .btn {
    width: 100%;
  }

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

  .snow-visual-cards {
    grid-template-columns: 1fr;
  }

  .snow-img-panel {
    grid-column: span 1; /* 1列グリッドに合わせてリセット */
  }

  .snow-vcard--large {
    grid-column: span 1;
  }

  .news-item {
    flex-wrap: wrap;
  }
}