/* ==========================================================================
   base.css
   デザイントークン(CSS変数)・リセット・共通スタイル
   モバイルファースト(min-widthで段階的に拡張)
   ========================================================================== */

:root {
  /* Colors: base */
  --color-bg: #F7F8FA;
  --color-bg-white: #FFFFFF;

  /* Colors: primary(藍) */
  --color-primary: #2C5273;
  --color-primary-dark: #1B2E3F;
  --color-primary-darker: #152331;

  /* Colors: 差し色(淡青) */
  --color-accent-1: #E4ECF3;
  --color-accent-2: #EEF2F6;
  --color-accent-3: #DCE6EE;
  --color-accent-text: #8FA9BF;

  /* Colors: 導線バー(グレージュ) */
  --color-taupe: #8A8577;
  --color-taupe-text: #F1EFE9;

  /* Colors: text */
  --color-text: #454B52;
  --color-text-sub: #5C616A;
  --color-text-on-dark: #DCE6EE;
  --color-text-on-dark-sub: #B9CBD9;
  --color-text-on-dark-muted: #8195A5;
  --color-text-on-dark-copy: #5C7086;

  /* Colors: border */
  --color-border: rgba(0, 0, 0, .08);
  --color-border-soft: rgba(0, 0, 0, .06);

  /* Typography */
  --font-heading: 'Noto Serif JP', serif;
  --font-body: 'Noto Sans JP', sans-serif;

  /* Layout */
  --container-max: 1200px;
  --container-max-wide: 1312px;
  --container-pad: 20px;
  --radius-pill: 26px;

  /* Motion */
  --ease-standard: cubic-bezier(.22, .61, .36, 1);
  --duration-base: .6s;
}

@media (min-width: 768px) {
  :root {
    --container-pad: 40px;
  }
}

@media (min-width: 1024px) {
  :root {
    --container-pad: 64px;
  }
}

*, *::before, *::after {
  box-sizing: border-box;
}

html {
  font-size: 100%;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3, p {
  margin: 0;
}

a {
  color: var(--color-primary);
  text-decoration: none;
}

a:hover {
  color: var(--color-primary-dark);
}

img {
  max-width: 100%;
  display: block;
}

ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
}

/* 共通コンテナ */
.l-container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: var(--container-pad);
  padding-right: var(--container-pad);
}

.l-container--wide {
  max-width: var(--container-max-wide);
}

/* 丸型リンク(VIEW MORE等の共通パーツ) */
.c-more-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 14px;
}

.c-more-link__icon {
  flex: none;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}

/* 実写真の未支給プレースホルダー(実装時に本物の画像へ差し替える) */
.ph-image {
  position: relative;
  width: 100%;
  height: 100%;
  min-height: 160px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 12px;
  text-align: center;
  background: repeating-linear-gradient(
    45deg,
    var(--color-accent-1) 0,
    var(--color-accent-1) 12px,
    var(--color-accent-2) 12px,
    var(--color-accent-2) 24px
  );
  color: var(--color-text-sub);
  font-size: 14px;
  line-height: 1.6;
}

.ph-image--dark {
  background: repeating-linear-gradient(
    45deg,
    rgba(255, 255, 255, .08) 0,
    rgba(255, 255, 255, .08) 12px,
    rgba(255, 255, 255, .03) 12px,
    rgba(255, 255, 255, .03) 24px
  );
  color: var(--color-text-on-dark);
}

/* スクロール演出(js/scroll-animation.jsと連動) */
[data-animate] {
  opacity: 0;
  will-change: transform, opacity;
  transition: opacity var(--duration-base) var(--ease-standard),
              transform var(--duration-base) var(--ease-standard);
}

[data-animate="fade-up"] {
  transform: translateY(24px);
}

[data-animate="fade-left"] {
  transform: translateX(-32px);
}

[data-animate="fade-right"] {
  transform: translateX(32px);
}

[data-animate].is-visible {
  opacity: 1;
  transform: translate(0, 0);
}

@media (prefers-reduced-motion: reduce) {
  [data-animate] {
    opacity: 1;
    transform: none;
    transition: none;
  }
}


/* ==========================================================================
   header.css
   .site-header
   1段構成: ロゴ / グローバルナビ(PC) / 無料相談CTA+ハンバーガー(モバイル)
   モバイルはナビをドロップダウン表示
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  background: var(--color-bg-white);
}

.site-header__top {
  display: flex;
  align-items: center;
  gap: 16px;
  max-width: var(--container-max-wide);
  margin: 0 auto;
  padding: 16px var(--container-pad);
}

.site-header__brand {
  flex: none;
  margin-right: auto;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 18px;
  color: var(--color-primary);
  letter-spacing: .02em;
}

.site-header__actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

.site-header__cta {
  flex: none;
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  padding: 10px 16px;
  background: var(--color-primary);
  color: #fff;
  border-radius: 8px;
  font-weight: 700;
  font-size: 14px;
}

.site-header__cta:hover {
  color: #fff;
  background: var(--color-primary-dark);
}

/* ハンバーガーボタン(モバイル・タブレットのみ表示) */
.site-header__toggle {
  flex: none;
  width: 40px;
  height: 40px;
  border: none;
  background: transparent;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
}

.site-header__toggle-bars {
  position: relative;
  width: 22px;
  height: 16px;
}

.site-header__toggle-bars span {
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  border-radius: 2px;
  background: var(--color-primary-dark);
  transition: transform .3s var(--ease-standard), opacity .3s var(--ease-standard);
}

.site-header__toggle-bars span:nth-child(1) { top: 0; }
.site-header__toggle-bars span:nth-child(2) { top: 7px; }
.site-header__toggle-bars span:nth-child(3) { top: 14px; }

.site-header__toggle[aria-expanded="true"] .site-header__toggle-bars span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.site-header__toggle[aria-expanded="true"] .site-header__toggle-bars span:nth-child(2) {
  opacity: 0;
}
.site-header__toggle[aria-expanded="true"] .site-header__toggle-bars span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ナビ(モバイル: ドロップダウン、初期状態は非表示) */
.site-header__nav {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--color-bg-white);
  padding: 0 var(--container-pad) 20px;
  box-shadow: 0 16px 24px rgba(27, 46, 63, .08);
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  visibility: hidden;
  transition: max-height .35s var(--ease-standard), opacity .3s var(--ease-standard);
}

.site-header__nav.is-open {
  max-height: 360px;
  opacity: 1;
  visibility: visible;
}

.site-header__nav-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.site-header__nav-link {
  display: block;
  padding: 12px 4px;
  font-size: 14px;
  font-weight: 500;
  color: #23262B;
  border-bottom: 1px solid var(--color-border-soft);
}

@media (min-width: 768px) {
  .site-header__brand {
    font-size: 20px;
  }
}

@media (min-width: 1024px) {
  .site-header__brand {
    font-size: 22px;
  }

  .site-header__cta {
    padding: 15px 30px;
    font-size: 14px;
  }

  .site-header__toggle {
    display: none;
  }

  .site-header__nav {
    position: static;
    padding: 0;
    max-height: none;
    opacity: 1;
    visibility: visible;
    box-shadow: none;
  }

  .site-header__nav-list {
    flex-direction: row;
    align-items: center;
    gap: 32px;
  }

  .site-header__nav-link {
    padding: 0;
    font-size: 14px;
    font-weight: 500;
    border-bottom: none;
  }
}



/* ==========================================================================
   footer.css
   .site-footer
   ロゴ・タグライン/リンク2列/コピーライト、背景 濃紺
   ========================================================================== */

.site-footer {
  background: var(--color-primary-darker);
  padding: 40px var(--container-pad) 24px;
}

.site-footer__inner {
  max-width: var(--container-max);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 28px;
  padding-bottom: 28px;
  border-bottom: 1px solid rgba(255, 255, 255, .1);
}

.site-footer__brand {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 16px;
  color: #fff;
  margin-bottom: 10px;
}

.site-footer__tagline {
  font-size: 14px;
  line-height: 1.9;
  color: var(--color-text-on-dark-muted);
}

.site-footer__links {
  display: flex;
  gap: 40px;
}

.site-footer__list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 14px;
  color: var(--color-text-on-dark-sub);
}

.site-footer__bottom {
  max-width: var(--container-max);
  margin: 20px auto 0;
  font-size: 14px;
  color: var(--color-text-on-dark-copy);
}

@media (min-width: 768px) {
  .site-footer {
    padding: 56px var(--container-pad) 32px;
  }

  .site-footer__inner {
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-start;
    padding-bottom: 32px;
  }

  .site-footer__brand {
    font-size: 17px;
  }

  .site-footer__tagline {
    font-size: 14px;
  }

  .site-footer__links {
    gap: 56px;
  }

  .site-footer__list {
    font-size: 14px;
  }

  .site-footer__bottom {
    margin-top: 24px;
    font-size: 14px;
  }
}