/* ============================================================
   style.css  — Sky Films LP3
   Next.js + Tailwind CSS を プレーン CSS に変換
   ============================================================ */

/* ===== 1. デザイントークン ===== */
:root {
  --color-ink:        #14181d;
  --color-ink-soft:   #3a4047;
  --color-muted:      #8b9099;
  --color-line:       #d8d5d0;
  --color-paper:      #ece9e4;
  --color-paper-2:    #f4f2ee;
  --color-night:      #0e151d;
  --color-night-2:    #121b25;
  --color-night-line: #2a3540;
  --color-accent:     #c8a96a;
  --font-sans:    "Noto Sans JP", system-ui, sans-serif;
  --font-serif:   "Noto Serif JP", serif;
  --font-display: "Jost", system-ui, sans-serif;
}

/* ===== 2. ベーススタイル ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html { scroll-behavior: smooth; }
body {
  background-color: #fff;
  color: var(--color-ink);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { display: block; max-width: 100%; }
a { text-decoration: none; color: inherit; }
ul, ol { list-style: none; }
button { cursor: pointer; background: none; border: none; font: inherit; color: inherit; }

/* ===== 3. タイポグラフィユーティリティ ===== */
.kicker {
  font-family: var(--font-display);
  font-weight: 400;
  letter-spacing: 0.28em;
  font-size: 0.7rem;
}
.numeric {
  font-family: var(--font-display);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
}
.vertical {
  writing-mode: vertical-rl;
  text-orientation: mixed;
}

/* ===== 4. アニメーション ===== */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}
.reveal { opacity: 0; }
.reveal.is-visible {
  animation: fadeUp 0.9s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

@keyframes scrollLine {
  0%   { transform: scaleY(0); transform-origin: top; }
  45%  { transform: scaleY(1); transform-origin: top; }
  55%  { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}
.scroll-line {
  display: block;
  width: 1px;
  height: 4rem;
  position: relative;
}
.scroll-line::after {
  content: "";
  display: block;
  width: 1px;
  height: 100%;
  background: currentColor;
  animation: scrollLine 2.4s ease-in-out infinite;
}

/* ===== 5. レイアウトユーティリティ ===== */
.container {
  margin: 0 auto;
  max-width: 1280px;
  padding: 0 1.25rem;
}
@media (min-width: 640px) {
  .container { padding: 0 2rem; }
}

/* セクション共通パディング */
.section-pad { padding: 6rem 0; }
@media (min-width: 640px) {
  .section-pad { padding: 8rem 0; }
}

/* サイドバーグリッド（見出し左240px + コンテンツ右） */
.sidebar-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
}
@media (min-width: 1024px) {
  .sidebar-grid {
    grid-template-columns: 240px 1fr;
    gap: 2.5rem 3.5rem;
  }
}

/* サイドバー左カラム（大画面でパディング追加） */
.sidebar-left {
  display: flex;
  flex-direction: column;
}
@media (min-width: 1024px) {
  .sidebar-left {
    padding-top: 2rem;
    padding-bottom: 3rem;
  }
}

/* ===== 6. セクション見出し ===== */
.section-heading {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}
.section-heading__kicker {
  display: flex;
  align-items: center;
  gap: 1rem;
}
.section-heading__line {
  display: block;
  height: 1px;
  width: 3rem;
}
@media (min-width: 640px) {
  .section-heading__line { width: 4rem; }
}
.section-heading__title {
  font-family: var(--font-serif);
  font-size: 1.85rem;
  font-weight: 500;
  line-height: 1.2;
  margin-top: 1.25rem;
}
@media (min-width: 640px) {
  .section-heading__title { font-size: 2.2rem; }
}
.section-heading__desc {
  font-size: 0.875rem;
  line-height: 2.4;
  margin-top: 1.25rem;
  max-width: 300px;
}

/* ===== 7. ヘッダー ===== */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 50;
  padding: 1.25rem 0;
  background-color: transparent;
  transition: background-color 0.5s, padding 0.5s, box-shadow 0.5s;
}
.site-header.is-scrolled {
  background-color: rgba(255, 255, 255, 0.92);
  padding: 0.75rem 0;
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.06);
  backdrop-filter: blur(8px);
}
.header-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
@media (min-width: 640px) {
  .header-inner { padding: 0 2rem; }
}
.header-logo img {
  height: 2rem;
  width: auto;
}

/* PC ナビ */
.header-nav {
  display: none;
  align-items: center;
  gap: 1.75rem;
}
@media (min-width: 1024px) {
  .header-nav { display: flex; }
}
.header-nav__link {
  font-family: var(--font-display);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  color: rgba(255, 255, 255, 0.85);
  transition: color 0.2s;
}
.header-nav__link:hover { color: #fff; }
.site-header.is-scrolled .header-nav__link { color: var(--color-ink-soft); }
.site-header.is-scrolled .header-nav__link:hover { color: var(--color-ink); }

.header-nav__cta {
  font-family: var(--font-display);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  border: 1px solid rgba(255, 255, 255, 0.5);
  border-radius: 9999px;
  padding: 0.5rem 1.25rem;
  color: #fff;
  transition: background-color 0.2s, color 0.2s, border-color 0.2s;
}
.header-nav__cta:hover { background-color: #fff; color: var(--color-ink); }
.site-header.is-scrolled .header-nav__cta {
  border-color: rgba(20, 24, 29, 0.25);
  color: var(--color-ink);
}
.site-header.is-scrolled .header-nav__cta:hover {
  background-color: var(--color-ink);
  color: #fff;
}

/* ハンバーガーボタン */
.hamburger {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  border-radius: 9999px;
  border: 1px solid rgba(255, 255, 255, 0.5);
  color: #fff;
  transition: border-color 0.2s, color 0.2s;
}
@media (min-width: 1024px) {
  .hamburger { display: none; }
}
.site-header.is-scrolled .hamburger,
.site-header.is-menu-open .hamburger {
  border-color: rgba(20, 24, 29, 0.25);
  color: var(--color-ink);
}
.hamburger__lines {
  position: relative;
  display: block;
  width: 1rem;
  height: 0.75rem;
}
.hamburger__line {
  position: absolute;
  left: 0;
  display: block;
  height: 1px;
  width: 1rem;
  background: currentColor;
  transition: all 0.3s;
}
.hamburger__line:nth-child(1) { top: 0; }
.hamburger__line:nth-child(2) { top: 0.375rem; }
.hamburger__line:nth-child(3) { top: 0.75rem; }
.site-header.is-menu-open .hamburger__line:nth-child(1) { top: 0.375rem; transform: rotate(45deg); }
.site-header.is-menu-open .hamburger__line:nth-child(2) { opacity: 0; }
.site-header.is-menu-open .hamburger__line:nth-child(3) { top: 0.375rem; transform: rotate(-45deg); }

/* モバイルオーバーレイメニュー */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 40;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.5s;
}
.mobile-menu.is-open {
  pointer-events: auto;
  opacity: 1;
}
.mobile-menu__bg {
  position: absolute;
  inset: 0;
  background-color: var(--color-night);
}
.mobile-menu__inner {
  position: relative;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 0 2rem;
}
@media (min-width: 640px) {
  .mobile-menu__inner { padding: 0 3.5rem; }
}
.mobile-menu__list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}
.mobile-menu__item {
  display: flex;
  align-items: baseline;
  gap: 1rem;
}
.mobile-menu__num {
  font-family: var(--font-display);
  font-size: 0.75rem;
  color: var(--color-accent);
}
.mobile-menu__label {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  color: #fff;
  transition: color 0.2s;
}
.mobile-menu__item:hover .mobile-menu__label { color: var(--color-accent); }
.mobile-menu__en {
  font-family: var(--font-display);
  font-size: 0.6rem;
  letter-spacing: 0.25em;
  color: rgba(255, 255, 255, 0.4);
}
.mobile-menu__cta {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  margin-top: 3rem;
  border: 1px solid rgba(255, 255, 255, 0.4);
  border-radius: 9999px;
  padding: 0.75rem 1.75rem;
  font-size: 0.875rem;
  letter-spacing: 0.2em;
  color: #fff;
  width: fit-content;
  transition: background-color 0.2s, color 0.2s;
}
.mobile-menu__cta:hover { background-color: #fff; color: var(--color-ink); }

/* ===== 8. ヒーロー ===== */
.hero {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 100svh;
  overflow: hidden;
}
.hero__bg {
  position: absolute;
  inset: 0;
}
.hero__bg-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.hero__overlay-tb {
  position: absolute;
  inset: 0;
  /* 画像を明るく見せるためオーバーレイ（黒グラデーション）を薄くした */
  background: linear-gradient(to bottom, rgba(0,0,0,0.22), rgba(0,0,0,0.05), rgba(0,0,0,0.3));
}
.hero__overlay-lr {
  position: absolute;
  inset: 0;
  /* 左側の黒みも軽くしてメインビジュアルを明るく */
  background: linear-gradient(to right, rgba(0,0,0,0.22), transparent);
}
.hero__content {
  position: relative;
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 6rem 1.25rem 0;
}
@media (min-width: 640px) {
  .hero__content { padding: 6rem 2rem 0; }
}
.hero__kicker {
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.hero__kicker-line {
  display: block;
  height: 1px;
  width: 2rem;
  background: rgba(255, 255, 255, 0.5);
}
.hero__title {
  font-family: var(--font-serif);
  font-size: 2.6rem;
  font-weight: 500;
  line-height: 1.28;
  color: #fff;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}
@media (min-width: 640px) { .hero__title { font-size: 3.8rem; } }
@media (min-width: 1024px) { .hero__title { font-size: 4.4rem; } }
.hero__desc {
  margin-top: 1.75rem;
  max-width: 28rem;
  font-size: 0.875rem;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.85);
}
@media (min-width: 640px) { .hero__desc { font-size: 1rem; } }
.hero__play {
  display: inline-flex;
  align-items: center;
  gap: 1rem;
  margin-top: 3rem;
  color: #fff;
}
.hero__play-circle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 4rem;
  height: 4rem;
  border-radius: 9999px;
  border: 1px solid rgba(255, 255, 255, 0.6);
  transition: transform 0.3s, border-color 0.3s;
  flex-shrink: 0;
}
.hero__play:hover .hero__play-circle {
  transform: scale(1.05);
  border-color: #fff;
}
.hero__play-label {
  font-family: var(--font-display);
  font-size: 0.78rem;
  letter-spacing: 0.28em;
}
.hero__scroll {
  position: absolute;
  bottom: 0;
  right: 1.5rem;
  display: none;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  color: rgba(255, 255, 255, 0.7);
}
@media (min-width: 640px) {
  .hero__scroll { display: flex; }
}
.hero__scroll-text {
  font-family: var(--font-display);
  font-size: 0.6rem;
  letter-spacing: 0.3em;
}

/* ===== 9. 選ばれる理由 ===== */
.reasons__cards {
  display: grid;
  grid-template-columns: 1fr;
  border-top: 1px solid var(--color-line);
}
@media (min-width: 640px) {
  .reasons__cards { grid-template-columns: repeat(3, 1fr); }
}
.reasons__card {
  display: flex;
  flex-direction: column;
  padding: 2rem 0;
  border-bottom: 1px solid var(--color-line);
}
@media (min-width: 640px) {
  .reasons__card {
    padding: 2rem 1.75rem;
    border-bottom: none;
    border-right: 1px solid var(--color-line);
  }
  .reasons__card:last-child { border-right: none; }
}
.reasons__card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.reasons__card-num {
  font-family: var(--font-display);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  color: var(--color-muted);
}
.reasons__card-icon {
  width: 32px;
  height: 32px;
  color: var(--color-ink-soft);
  transition: color 0.2s;
}
.reasons__card:hover .reasons__card-icon { color: var(--color-accent); }
.reasons__card-title {
  font-family: var(--font-serif);
  font-size: 1.125rem;
  font-weight: 500;
  color: var(--color-ink);
  margin-top: 1.5rem;
}
.reasons__card-body {
  font-size: 0.82rem;
  line-height: 1.8;
  color: var(--color-ink-soft);
  margin-top: 0.75rem;
}

/* ===== 10. サービス内容 ===== */
.services__cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem 1.75rem;
}
@media (min-width: 640px) {
  .services__cards { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1024px) {
  .services__cards { grid-template-columns: repeat(3, 1fr); }
}
.services__card-img-wrap { overflow: hidden; }
.services__card-img {
  aspect-ratio: 16 / 10;
  width: 100%;
  object-fit: cover;
  transition: transform 0.7s ease-out;
}
.services__card:hover .services__card-img { transform: scale(1.05); }
.services__card-title {
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-ink);
  margin-top: 1.25rem;
}
.services__card-body {
  font-size: 0.8rem;
  line-height: 1.8;
  color: var(--color-ink-soft);
  margin-top: 0.5rem;
}

/* ===== 11. 制作実績 ===== */
.works__cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}
@media (min-width: 1024px) {
  .works__cards { grid-template-columns: repeat(4, 1fr); }
}
.works__card { position: relative; overflow: hidden; }
.works__card-img {
  aspect-ratio: 4 / 5;
  width: 100%;
  object-fit: cover;
  filter: brightness(0.8) saturate(0.85);
  transition: transform 0.7s ease-out, filter 0.7s ease-out;
}
.works__card:hover .works__card-img {
  transform: scale(1.06);
  filter: brightness(0.95) saturate(0.85);
}
.works__card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.8), rgba(0,0,0,0.15), transparent);
}
.works__card-info {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: 1rem;
}
.works__card-cat {
  font-family: var(--font-display);
  font-size: 0.6rem;
  letter-spacing: 0.24em;
  color: rgba(255, 255, 255, 0.95);
}
.works__card-title {
  font-family: var(--font-serif);
  font-size: 0.92rem;
  font-weight: 500;
  line-height: 1.4;
  color: #fff;
  margin-top: 0.375rem;
}
.works__card-detail {
  font-size: 0.66rem;
  color: rgba(255, 255, 255, 0.6);
  margin-top: 0.25rem;
}
.works__view-all { margin-top: 2rem; }
.works__view-all a {
  display: inline-flex;
  flex-direction: column;
  gap: 0.5rem;
  font-family: var(--font-display);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  color: rgba(255, 255, 255, 0.8);
  transition: color 0.2s;
}
.works__view-all a:hover { color: var(--color-accent); }
.works__view-all-line {
  display: block;
  height: 1px;
  width: 6rem;
  background: rgba(255, 255, 255, 0.4);
  transition: width 0.3s, background-color 0.3s;
}
.works__view-all a:hover .works__view-all-line {
  width: 7rem;
  background-color: var(--color-accent);
}
.works__nav {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.75rem;
  margin-top: 2rem;
}
.works__nav-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  border-radius: 9999px;
  border: 1px solid rgba(255, 255, 255, 0.25);
  color: rgba(255, 255, 255, 0.55);
}
.works__nav-btn--next {
  border-color: rgba(255, 255, 255, 0.4);
  color: #fff;
  transition: background-color 0.2s, color 0.2s;
}
.works__nav-btn--next:hover {
  background-color: #fff;
  color: var(--color-night);
}
.works__copyright {
  position: absolute;
  right: 0.5rem;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-display);
  font-size: 0.55rem;
  letter-spacing: 0.3em;
  color: rgba(255, 255, 255, 0.3);
  display: none;
}
@media (min-width: 1280px) {
  .works__copyright { display: block; }
}

/* ===== 12. 制作の流れ ===== */
.flow__steps {
  display: grid;
  grid-template-columns: 1fr;
  border-top: 1px solid var(--color-line);
}
@media (min-width: 640px) {
  .flow__steps { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1024px) {
  .flow__steps { grid-template-columns: repeat(3, 1fr); }
}
.flow__step {
  display: flex;
  flex-direction: column;
  padding: 2rem 0;
  border-bottom: 1px solid var(--color-line);
}
@media (min-width: 640px) {
  .flow__step { padding: 2rem 1.5rem; }
}
.flow__step-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.flow__step-icon { width: 26px; height: 26px; color: var(--color-ink-soft); }
.flow__step-num {
  font-family: var(--font-display);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--color-accent);
}
.flow__step-title {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--color-ink);
  margin-top: 1.5rem;
}
.flow__step-body {
  font-size: 0.8rem;
  line-height: 1.8;
  color: var(--color-ink-soft);
  margin-top: 0.5rem;
}

/* ===== 13. 料金プラン ===== */
.price__header {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}
@media (min-width: 640px) {
  .price__header {
    flex-direction: row;
    align-items: flex-end;
    gap: 4rem;
  }
}
.price__sub {
  font-size: 0.875rem;
  line-height: 1.8;
  color: var(--color-ink-soft);
  padding-bottom: 0.25rem;
  white-space: nowrap;
}
.price__cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-top: 4rem;
  align-items: stretch;
}
@media (min-width: 640px) {
  .price__cards { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1280px) {
  .price__cards { grid-template-columns: repeat(4, 1fr); }
}
.price__card {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--color-line);
  background-color: #fff;
  color: var(--color-ink);
  padding: 2.25rem 1.5rem;
  transition: transform 0.3s;
}
@media (min-width: 640px) {
  .price__card { padding: 2.25rem 1.75rem; }
}
@media (min-width: 768px) {
  .price__card:hover { transform: translateY(-4px); }
}
.price__card--featured {
  border-color: var(--color-night);
  background-color: var(--color-night);
  color: #fff;
}
.price__plan-name {
  font-size: 0.875rem;
  letter-spacing: 0.08em;
  color: var(--color-ink-soft);
}
.price__card--featured .price__plan-name { color: var(--color-accent); }
.price__amount {
  display: flex;
  align-items: baseline;
  gap: 0.25rem;
  margin-top: 1.25rem;
}
.price__yen { font-family: var(--font-display); font-size: 1rem; }
.price__num { font-family: var(--font-display); font-size: 1.9rem; font-weight: 500; line-height: 1; }
.price__from { font-family: var(--font-display); font-size: 0.875rem; }
.price__note {
  font-size: 0.8rem;
  line-height: 1.8;
  color: var(--color-ink-soft);
  margin-top: 1rem;
}
.price__card--featured .price__note { color: rgba(255, 255, 255, 0.7); }
.price__divider {
  height: 1px;
  background-color: var(--color-line);
  margin: 1.5rem 0;
}
.price__card--featured .price__divider { background-color: var(--color-night-line); }
.price__features { display: flex; flex-direction: column; gap: 0.75rem; }
.price__feature {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.82rem;
}
.price__feature-dot {
  display: inline-block;
  width: 0.25rem;
  height: 0.25rem;
  border-radius: 9999px;
  background-color: var(--color-accent);
  flex-shrink: 0;
}
.price__feature-text { color: var(--color-ink-soft); }
.price__card--featured .price__feature-text { color: rgba(255, 255, 255, 0.9); }
.price__disclaimer {
  font-size: 0.68rem;
  color: var(--color-muted);
  margin-top: auto;
  padding-top: 2rem;
}
.price__card--featured .price__disclaimer { color: rgba(255, 255, 255, 0.45); }
.price__cta-wrap {
  display: flex;
  justify-content: center;
  margin-top: 3.5rem;
}
.price__cta {
  display: inline-flex;
  align-items: center;
  gap: 1rem;
  border: 1px solid rgba(20, 24, 29, 0.25);
  border-radius: 9999px;
  padding: 1rem 2.25rem;
  font-size: 0.875rem;
  letter-spacing: 0.18em;
  color: var(--color-ink);
  transition: background-color 0.2s, color 0.2s;
}
.price__cta:hover { background-color: var(--color-ink); color: #fff; }
.price__cta-line {
  display: block;
  height: 1px;
  width: 2rem;
  background: currentColor;
  transition: width 0.3s;
}
.price__cta:hover .price__cta-line { width: 3rem; }

/* ===== 14. 対応エリア ===== */
.area__grid {
  display: grid;
  grid-template-columns: 1fr;
  align-items: center;
  gap: 3rem;
}
@media (min-width: 1024px) {
  .area__grid { grid-template-columns: 1.7fr 1fr; gap: 4rem; }
}
.area__desc {
  font-size: 0.875rem;
  line-height: 1.8;
  color: var(--color-ink-soft);
  margin-top: 1.5rem;
  max-width: 100%;
}
.area__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2rem;
}
.area__tag {
  border: 1px solid var(--color-line);
  border-radius: 9999px;
  padding: 0.375rem 1rem;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--color-ink-soft);
}
.area__img-wrap { margin: 0 auto; width: 100%; max-width: 520px; }
.area__img { width: 100%; max-width: 520px; height: 400px; object-fit: contain; border-radius: 0.5rem; }

/* ===== 15. FAQ ===== */
.faq__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
}
@media (min-width: 1024px) {
  .faq__grid { grid-template-columns: 1.4fr 1fr; gap: 4rem; }
}
.faq__list {
  margin-top: 3rem;
  border-top: 1px solid var(--color-line);
}
.faq__item { border-bottom: 1px solid var(--color-line); }
.faq__btn {
  display: flex;
  width: 100%;
  align-items: center;
  gap: 1.25rem;
  padding: 1.25rem 0;
  text-align: left;
}
.faq__q-label {
  font-family: var(--font-display);
  font-size: 0.75rem;
  color: var(--color-accent);
  flex-shrink: 0;
}
.faq__q-text {
  flex: 1;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--color-ink);
}
.faq__icon {
  position: relative;
  width: 1.25rem;
  height: 1.25rem;
  flex-shrink: 0;
  transition: transform 0.3s;
}
.faq__icon-h,
.faq__icon-v {
  position: absolute;
  top: 50%;
  left: 50%;
  background: var(--color-ink-soft);
}
.faq__icon-h {
  height: 1px;
  width: 0.875rem;
  transform: translate(-50%, -50%);
}
.faq__icon-v {
  width: 1px;
  height: 0.875rem;
  transform: translate(-50%, -50%);
  transition: opacity 0.3s;
}
.faq__item.is-open .faq__icon { transform: rotate(45deg); }
/* アコーディオンアニメーション（CSS grid trick） */
.faq__answer {
  display: grid;
  grid-template-rows: 0fr;
  opacity: 0;
  transition: grid-template-rows 0.3s ease-out, opacity 0.3s ease-out;
}
.faq__item.is-open .faq__answer {
  grid-template-rows: 1fr;
  opacity: 1;
}
.faq__answer-inner { overflow: hidden; min-height: 0; }
.faq__answer-text {
  padding: 0 1.5rem 1.5rem 2rem;
  font-size: 0.84rem;
  line-height: 1.8;
  color: var(--color-ink-soft);
}

/* お問い合わせボックス */
.contact-box {
  display: flex;
  flex-direction: column;
  justify-content: center;
  background-color: var(--color-night);
  padding: 3rem 2.25rem;
  color: #fff;
}
.contact-box__label { color: var(--color-accent); }
.contact-box__text {
  font-size: 0.875rem;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.8);
  margin-top: 1.25rem;
}
.contact-box__btn {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 2rem;
  border: 1px solid rgba(255, 255, 255, 0.4);
  border-radius: 9999px;
  padding: 1rem 1.75rem;
  font-size: 0.875rem;
  letter-spacing: 0.18em;
  color: #fff;
  transition: background-color 0.2s, color 0.2s;
}
.contact-box__btn:hover { background-color: #fff; color: var(--color-night); }
.contact-box__btn svg { transition: transform 0.2s; }
.contact-box__btn:hover svg { transform: translateX(4px); }

/* ===== 16. フッター ===== */
.site-footer {
  background-color: var(--color-night);
  color: #fff;
}
.footer-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 5rem 1.25rem;
}
@media (min-width: 640px) {
  .footer-inner { padding: 5rem 2rem; }
}
.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
}
@media (min-width: 1024px) {
  .footer-grid { grid-template-columns: 1.4fr 1fr auto; }
}
.footer-logo img { height: 2rem; width: auto; }
.footer-brand__desc {
  font-size: 0.8rem;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.6);
  margin-top: 1.5rem;
  max-width: 24rem;
}
.footer-nav {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem 1.5rem;
}
.footer-nav a {
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.7);
  transition: color 0.2s;
}
.footer-nav a:hover { color: var(--color-accent); }
.footer-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  border: 1px solid rgba(255, 255, 255, 0.4);
  border-radius: 9999px;
  padding: 0.875rem 1.75rem;
  font-size: 0.875rem;
  letter-spacing: 0.18em;
  color: #fff;
  white-space: nowrap;
  height: fit-content;
  transition: background-color 0.2s, color 0.2s;
}
.footer-cta:hover { background-color: #fff; color: var(--color-night); }
.footer-cta svg { transition: transform 0.2s; }
.footer-cta:hover svg { transform: translateX(4px); }
.footer-bottom {
  margin-top: 4rem;
  padding-top: 2rem;
  border-top: 1px solid var(--color-night-line);
}
.footer-bottom-row {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}
@media (min-width: 640px) {
  .footer-bottom-row {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}
.footer-legal {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.25rem;
}
.footer-legal a {
  font-size: 0.72rem;
  color: rgba(255, 255, 255, 0.55);
  transition: color 0.2s;
}
.footer-legal a:hover { color: var(--color-accent); }
.footer-social { display: flex; gap: 1rem; }
.footer-social a {
  color: rgba(255, 255, 255, 0.5);
  transition: color 0.2s;
}
.footer-social a:hover { color: #fff; }
.footer-copyright {
  display: block;
  margin-top: 1.5rem;
  font-family: var(--font-display);
  font-size: 0.62rem;
  letter-spacing: 0.2em;
  color: rgba(255, 255, 255, 0.4);
}

/* ===== 17. SVGアイコン共通 ===== */
.icon {
  fill: none;
  stroke: currentColor;
  stroke-width: 1.2;
  stroke-linecap: round;
  stroke-linejoin: round;
}