/* =========================================
   機能詳細ページ専用スタイル
   ========================================= */

/* ---- 機能ナビ ---- */
.feature-nav {
  position: sticky;
  top: 64px;
  z-index: 100;
  background: var(--color-white);
  border-bottom: 1px solid var(--color-gray-2);
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
}
.feature-nav__list {
  display: flex;
  gap: 0;
  overflow-x: auto;
  scrollbar-width: none;
}
.feature-nav__list::-webkit-scrollbar { display: none; }
.feature-nav__list li { flex-shrink: 0; }
.feature-nav__list a {
  display: block;
  padding: 16px 24px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-light);
  border-bottom: 3px solid transparent;
  white-space: nowrap;
  transition: var(--transition);
}
.feature-nav__list a:hover {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
  background: rgba(47,74,91,0.03);
}

/* ---- 機能セクション（2カラム） ---- */
.feat-section__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.feat-section__inner--reverse {
  direction: rtl;
}
.feat-section__inner--reverse > * {
  direction: ltr;
}

/* ---- リード文 ---- */
.feat-section__lead {
  font-size: 16px;
  color: var(--color-text-light);
  line-height: 1.9;
  margin-bottom: 32px;
  padding-left: 23px;
}

/* ---- 機能リスト ---- */
.feat-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.feat-list__item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 20px 24px;
  background: var(--color-gray);
  border-radius: var(--radius-md);
  border-left: 4px solid var(--color-primary);
  transition: var(--transition);
}
.feat-list__item:hover {
  background: rgba(47,74,91,0.06);
  transform: translateX(4px);
}
.feat-list__icon {
  width: 28px;
  height: 28px;
  background: var(--color-primary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 2px;
}
.feat-list__item strong {
  display: block;
  font-size: 15px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 6px;
}
.feat-list__item p {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.7;
  margin: 0;
}

/* ---- ビジュアルボックス ---- */
.feat-visual {
  border-radius: var(--radius-lg);
  padding: 48px 32px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 300px;
  text-align: center;
}
.feat-visual--cloud {
  background: linear-gradient(135deg, #EEF2F4 0%, #DCE5EA 100%);
  border: 2px solid rgba(47,74,91,0.15);
}
.feat-visual--security {
  background: linear-gradient(135deg, #EEF2F4 0%, #DCE5EA 100%);
  border: 2px solid rgba(47,74,91,0.15);
}
.feat-visual--data {
  background: linear-gradient(135deg, #FFF3EC 0%, #FCE3D6 100%);
  border: 2px solid rgba(227,83,41,0.2);
}
.feat-visual--design {
  background: linear-gradient(135deg, #EEF2F4 0%, #DCE5EA 100%);
  border: 2px solid rgba(47,74,91,0.15);
}
.feat-visual__icon {
  font-size: 80px;
  margin-bottom: 24px;
  filter: drop-shadow(0 4px 12px rgba(0,0,0,0.1));
}
.feat-visual__lines { font-size: 14px; color: var(--color-text); }
.feat-visual__line {
  background: white;
  padding: 10px 20px;
  border-radius: 50px;
  font-weight: 600;
  margin: 8px 0;
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}
.feat-visual__arrow { font-size: 28px; color: var(--color-primary); }
.feat-visual__badge {
  background: var(--color-primary);
  color: white;
  padding: 12px 32px;
  border-radius: 50px;
  font-family: var(--font-en);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: 0.1em;
  margin-top: 16px;
  box-shadow: 0 4px 20px rgba(47,74,91,0.3);
}
.feat-visual__sub {
  margin-top: 12px;
  font-size: 14px;
  color: var(--color-text-light);
  font-weight: 600;
}

/* ---- データチャート（ビジュアル） ---- */
.feat-visual__chart {
  display: flex;
  align-items: flex-end;
  gap: 8px;
  height: 120px;
  padding: 0 8px;
}
.chart-bar {
  flex: 1;
  background: linear-gradient(to top, #2F4A5B, #4D7286);
  border-radius: 6px 6px 0 0;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  align-items: center;
  padding-top: 6px;
  min-width: 28px;
  transition: opacity 0.3s;
}
.chart-bar span {
  font-size: 11px;
  color: white;
  font-weight: 700;
}
.feat-visual__data-label {
  margin-top: 16px;
  font-size: 13px;
  color: var(--color-text-light);
  font-weight: 600;
}

/* ---- デザイン形状ビジュアル ---- */
.feat-shapes {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.feat-shape {
  padding: 20px 12px;
  border-radius: var(--radius-md);
  font-size: 13px;
  font-weight: 700;
  text-align: center;
  color: var(--color-white);
  letter-spacing: 0.05em;
}
.feat-shape--card { background: linear-gradient(135deg, #2F4A5B, #233A48); border-radius: 12px; }
.feat-shape--seal { background: linear-gradient(135deg, #E35329, #C8431F); border-radius: 50px; }
.feat-shape--tag { background: linear-gradient(135deg, #4D7286, #2F4A5B); border-radius: 4px 4px 4px 20px; }
.feat-shape--custom { background: linear-gradient(135deg, #ED8A63, #E35329); clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%); min-height: 80px; display:flex; align-items:center; justify-content:center; }

/* ---- 技術仕様グリッド ---- */
.spec-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}
.spec-card {
  background: var(--color-white);
  border: 2px solid var(--color-gray-2);
  border-radius: var(--radius-md);
  padding: 32px 28px;
  transition: var(--transition);
}
.spec-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-sm);
  transform: translateY(-4px);
}
.spec-card__icon { font-size: 36px; margin-bottom: 16px; }
.spec-card__title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--color-text);
  border-left: 4px solid var(--color-primary);
  padding-left: 12px;
}
.spec-card__list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.spec-card__list li {
  font-size: 14px;
  color: var(--color-text-light);
  padding-left: 16px;
  position: relative;
  line-height: 1.6;
}
.spec-card__list li::before {
  content: '▷';
  position: absolute;
  left: 0;
  color: var(--color-primary);
  font-size: 10px;
  top: 3px;
}

/* ---- レスポンシブ ---- */
@media (max-width: 900px) {
  .feat-section__inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .feat-section__inner--reverse { direction: ltr; }
  .feat-visual { min-height: 220px; }
}