:root {
  /* Color Palette */
  --color-primary: #004077;
  --color-secondary: #0099cc;
  --color-teal: #0abfa3;
  --color-blue-m: #25478b;
  --color-accent: #fff000;
  --color-accent-b: #c6eef9;
  --color-warm_s: #b7942b;
  --color-warm: #2b5faf;
  --color-warm-light: #c9b573;
  --color-text: #333333;
  --color-text-light: #666666;
  --color-bg: #f8f9fa;
  --color-white: #ffffff;
  --color-border: #e0e0e0;
  --color-info: #f0f7fd;
  --color-summary: #c6eef9;
  --color-hover-bg: #fff000;
  --color-hover-text: #004077;

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #004077 0%, #2d5a8f 100%);
  --gradient-secondary: linear-gradient(135deg, #0099cc 0%, #00b4e6 100%);

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-xxl: 4rem;

  /* Typography */
  --font-family: "Noto Sans JP", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;
  --font-size-4xl: 2.5rem;
  --font-size-5xl: 3rem;

  /* Line Heights — Elemental UI style (tighter, functional) */
  --line-height-tight: 1.2;
  --line-height-base: 1.4;
  --line-height-relaxed: 1.6;
  --line-height-max: 1.8;

  /* Border Radius — Elemental UI style (compact, functional) */
  --radius-sm: 0.125rem;
  --radius-md: 0.3rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.5rem;
  --radius-full: 9999px;

  /* Shadows — flat, border-first approach */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 1px 4px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 2px 8px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 4px 16px rgba(0, 0, 0, 0.12);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 300ms ease;
  --transition-slow: 500ms ease;

  /* Layout */
  --container-max-width: 1200px;
  --container-padding: 1rem;
  --header-height: 80px;

  /* Z-index */
  --z-index-dropdown: 100;
  --z-index-sticky: 200;
  --z-index-fixed: 300;
  --z-index-modal: 400;
  --z-index-popover: 500;
}

/* Media Query Breakpoints */
@custom-media --screen-sm (min-width: 640px);
@custom-media --screen-md (min-width: 768px);
@custom-media --screen-lg (min-width: 1024px);
@custom-media --screen-xl (min-width: 1280px);


/* ---------------------------------------------------------------
   セクション共通: 余白調整
--------------------------------------------------------------- */
.section {
  padding: 12.5rem 0 1.5rem;
}

.section-header {
  margin-bottom: 3rem;
}

@media (max-width: 1024px) {
  .section {
    padding: 8rem 0 0;
  }
}

@media (max-width: 768px) {
  .section {
    padding: 8.5rem 0 0;
  }
}

/* Container */
.container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

/* Video Section */
.video-section {
  background-color: var(--color-white);
}

.video-wrapper {
  display: grid;
  grid-template-columns: 3fr 2fr;
  gap: var(--spacing-xl);
  align-items: start;
  margin-top: var(--spacing-xl);
  box-shadow: var(--shadow-xl);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.video-container {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  background-color: #000;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
}

.video-container iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
}

.video-points {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.video-point {
  display: flex;
  gap: var(--spacing-md);
  align-items: flex-start;
}

.video-point__icon {
  flex-shrink: 0;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--radius-full);
  background: var(--gradient-secondary);
  color: var(--color-white);
  font-weight: 700;
  font-size: var(--font-size-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}

.video-point__title {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 0.25rem;
}

.video-point__body {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  line-height: var(--line-height-relaxed);
}

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

/* ---------------------------------------------------------------
   動画セクション: 中央1カラム
--------------------------------------------------------------- */
.video-section .video-wrapper {
  display: block;
  max-width: 860px;
  margin: 0 auto;
}

@media (max-width: 768px) {
  .video-section .video-wrapper {
    max-width: 100%;
  }
}

@media (max-width: 768px) {
  .bridgetop-section .small-contents {
    padding-top:60px;
  }
}

/* Safariでの表示崩れ対応CSS */
_::-webkit-full-page-media, _:future, :root .video-wrapper {
	overflow: initial ;
}