/* ============================================
   風船工房未来 - Art Direction CSS
   Design Philosophy: Editorial Asymmetry,
   Monochrome Canvas, Maximum Readability
   ============================================ */

/* --- RESET & BASE --- */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --color-bg: #FFFFFF;
  --color-bg-warm: #FAFAF8;
  --color-text: #222222;
  --color-text-light: #555555;
  --color-text-muted: #888888;
  --color-border: #E8E8E8;
  --color-border-dark: #CCCCCC;
  --font-serif: 'Noto Serif JP', 'Yu Mincho', '游明朝', serif;
  --font-sans: 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', sans-serif;
  --font-display: 'Great Vibes', 'Cormorant Garamond', cursive, serif;
  --fs-body: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --lh-body: 1.85;
  --section-gap: clamp(48px, 6vw, 96px);
  --container-max: 1200px;
  --ease-out: cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

body {
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  line-height: var(--lh-body);
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
}

/* --- UTILITY --- */
.pc-only { display: inline; }
@media (max-width: 768px) {
  .pc-only { display: none; }
}

/* ============================================
   HEADER
   ============================================ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: background 0.4s ease, border-color 0.4s ease, transform 0.3s var(--ease-out);
}

.site-header.scrolled {
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

/* .site-header.hidden は廃止（常時追従に変更） */
/* .site-header.hidden {
  transform: translateY(-100%);
} */

.header-inner {
  width: 100%;
  padding: 0 40px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

/* FV時（透明ヘッダー）はヘッダー全体を下げてロゴ上に余白を確保 */
.site-header:not(.scrolled) {
  padding-top: 20px;
}

.logo {
  display: flex;
  flex-direction: column;
  gap: 2px;
  flex-shrink: 0;
}

.logo-main {
  font-family: var(--font-serif);
  font-size: 2.2rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: #FFFFFF;
  transition: color 0.4s ease, font-size 0.4s ease;
}

.site-header.scrolled .logo-main {
  color: var(--color-text);
  font-size: 1.1rem;
}

.logo-sub {
  font-family: var(--font-display);
  font-size: 1.1rem;
  color: rgba(255,255,255,0.7);
  letter-spacing: 0.15em;
  font-weight: 300;
  transition: color 0.4s ease, font-size 0.4s ease;
}

.site-header.scrolled .logo-sub {
  color: var(--color-text-muted);
  font-size: 0.7rem;
}

.global-nav {
  flex: 1;
  display: flex;
  justify-content: flex-end;
  margin-right: 16px;
}

.nav-list {
  display: flex;
  gap: clamp(16px, 2vw, 32px);
  list-style: none;
}

.nav-list a {
  font-size: 0.82rem;
  font-weight: 400;
  letter-spacing: 0.04em;
  color: rgba(255,255,255,0.9);
  transition: color 0.4s ease;
  position: relative;
}

.site-header.scrolled .nav-list a {
  color: var(--color-text);
}

.nav-list a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: currentColor;
  transition: width 0.3s var(--ease-out);
}

.nav-list a:hover::after {
  width: 100%;
}

.header-cta {
  flex-shrink: 0;
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  z-index: 1001;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: #FFFFFF;
  transition: all 0.3s var(--ease-out);
}

.site-header.scrolled .hamburger span {
  background: var(--color-text);
}

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ============================================
   BUTTONS
   ============================================ */

/* ヘッダーCTAボタン：透明時は白ボーダー、スクロール後は墨色 */
.btn-header-line {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: #FFFFFF;
  border: 1.5px solid rgba(255,255,255,0.7);
  padding: 9px 18px;
  border-radius: 2px;
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  transition: background 0.3s, color 0.3s, border-color 0.4s, transform 0.2s;
  white-space: nowrap;
}

.btn-header-line:hover {
  background: rgba(255,255,255,0.15);
  transform: translateY(-1px);
}

.site-header.scrolled .btn-header-line {
  background: var(--color-text);
  color: #FFFFFF;
  border-color: var(--color-text);
}

.site-header.scrolled .btn-header-line:hover {
  background: #444444;
}

.btn-header-line .line-icon {
  flex-shrink: 0;
}

/* ヒーローメインCTA：白地×墨ボーダー */
.btn-hero-line {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: rgba(255, 255, 255, 0.95);
  color: var(--color-text);
  padding: 16px 36px;
  border-radius: 2px;
  border: 1px solid var(--color-text);
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  transition: background 0.25s, color 0.25s, transform 0.2s;
  white-space: nowrap;
}

.btn-hero-line:hover {
  background: var(--color-text);
  color: #FFFFFF;
  transform: translateY(-2px);
}

.btn-hero-line .line-icon {
  flex-shrink: 0;
}

/* ヒーローゴーストCTA：透明×白ボーダー */
.btn-hero-ghost {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: rgba(255, 255, 255, 0.9);
  padding: 14px 28px;
  border-radius: 2px;
  border: 1px solid rgba(255, 255, 255, 0.6);
  font-size: 0.88rem;
  font-weight: 400;
  letter-spacing: 0.06em;
  transition: background 0.25s, border-color 0.25s, transform 0.2s;
  white-space: nowrap;
}

.btn-hero-ghost:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.9);
  transform: translateY(2px);
}

/* フッターLINEボタン */
.btn-footer-line {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.12);
  color: #FFFFFF;
  padding: 12px 28px;
  border-radius: 2px;
  border: 1px solid rgba(255, 255, 255, 0.4);
  font-size: 0.88rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  transition: background 0.2s, transform 0.2s;
  white-space: nowrap;
}

.btn-footer-line:hover {
  background: rgba(255, 255, 255, 0.22);
  transform: translateY(-1px);
}

.btn-footer-line .line-icon {
  flex-shrink: 0;
}

.btn-text {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--color-text);
  border-bottom: 1px solid var(--color-text);
  padding-bottom: 4px;
  transition: gap 0.3s var(--ease-out);
}

.btn-text:hover {
  gap: 14px;
}

.btn-arrow {
  transition: transform 0.3s var(--ease-out);
}

.btn-text:hover .btn-arrow {
  transform: translateX(4px);
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border: 1px solid var(--color-text);
  border-radius: 0;
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  transition: background 0.3s, color 0.3s, gap 0.3s;
}

.btn-outline:hover {
  background: var(--color-text);
  color: var(--color-bg);
  gap: 14px;
}

/* ============================================
   HERO — Fullscreen Slideshow
   ============================================ */
.hero {
  position: relative;
  width: 100%;
  height: 100vh;
  min-height: 600px;
  overflow: hidden;
}

/* スライドショー */
.hero-slideshow {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-slide {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0;
  transition: opacity 1.4s ease;
}

.hero-slide.active {
  opacity: 1;
  animation: heroZoom 9s ease-out forwards;
}

@keyframes heroZoom {
  from { transform: scale(1.06); }
  to   { transform: scale(1.0); }
}

/* オーバーレイ：左下を暗く、右側は写真を見せる */
.hero-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(
    110deg,
    rgba(15,13,11,0.65) 0%,
    rgba(15,13,11,0.38) 50%,
    rgba(15,13,11,0.10) 100%
  );
}

/* スライドドット */
.hero-slide-dots {
  position: absolute;
  bottom: 36px;
  left: clamp(24px, 6vw, 96px);
  display: flex;
  gap: 10px;
  z-index: 10;
}

.slide-dot {
  width: 28px;
  height: 2px;
  background: rgba(255,255,255,0.35);
  border: none;
  cursor: pointer;
  padding: 0;
  transition: background 0.3s, width 0.4s;
}
.slide-dot.active {
  background: #FFFFFF;
  width: 48px;
}

/* コンテンツレイヤー */
.hero-inner {
  position: relative;
  z-index: 5;
  width: 100%;
  height: 100%;
  padding: 0 40px clamp(80px, 10vh, 120px) 40px;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
}

.hero-content {
  max-width: 580px;
}

/* 英語装飾ライン */
.hero-en-label {
  font-family: var(--font-display);
  font-size: clamp(0.72rem, 1vw, 0.88rem);
  font-weight: 300;
  font-style: italic;
  letter-spacing: 0.22em;
  color: rgba(255, 255, 255, 0.65);
  margin-bottom: 20px;
  display: block;
}

/* タイトル */
.hero-title {
  font-family: var(--font-serif);
  font-weight: 600;
  letter-spacing: 0.06em;
  line-height: 1.45;
  margin-bottom: 24px;
  display: flex;
  flex-direction: column;
}

.hero-title-line {
  display: block;
  font-size: clamp(2rem, 4.5vw, 3.6rem);
  color: #FFFFFF;
  text-shadow: 0 2px 24px rgba(0,0,0,0.35);
}

/* 最終行「バルーンギフトを。」は必ず1行に */
.hero-title-accent {
  display: block;
  white-space: nowrap;
  color: #FFFFFF;
  text-shadow: 0 2px 24px rgba(0,0,0,0.35);
  font-size: clamp(1.6rem, 3.8vw, 3.2rem);
}

.hero-subtitle {
  font-size: clamp(0.82rem, 1.1vw, 0.95rem);
  line-height: 2;
  color: rgba(255, 255, 255, 0.82);
  margin-bottom: 36px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* スクロールインジケーター */
.hero-scroll-indicator {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding-bottom: 8px;
  opacity: 0.6;
  align-self: flex-end;
}

.scroll-line {
  display: block;
  width: 1px;
  height: 60px;
  background: linear-gradient(to bottom, transparent, rgba(255,255,255,0.8));
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.4; transform: scaleY(0.8); }
  50% { opacity: 1; transform: scaleY(1); }
}

.scroll-text {
  font-family: var(--font-display);
  font-size: 0.6rem;
  letter-spacing: 0.3em;
  color: rgba(255, 255, 255, 0.7);
  writing-mode: vertical-rl;
  text-orientation: mixed;
}

/* ============================================
   SECTIONS COMMON
   ============================================ */
.section {
  padding: var(--section-gap) 40px;
}

.section-header {
  text-align: center;
  margin-bottom: clamp(40px, 5vw, 72px);
}

.section-en,
.section-en-deco {
  display: block;
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 300;
  color: var(--color-text-muted);
  letter-spacing: 0.06em;
  line-height: 1.1;
  margin-bottom: 6px;
}

/* 小さい英字（従来の.section-en） */
.section-en {
  font-size: clamp(0.75rem, 1vw, 0.9rem);
  letter-spacing: 0.2em;
}

/* 大きめ筆記体装飾英字 */
.section-en-deco {
  font-size: clamp(1.6rem, 3.5vw, 2.8rem);
  opacity: 0.45;
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 600;
  letter-spacing: 0.08em;
  line-height: 1.4;
}

.section-lead {
  margin-top: 16px;
  font-size: 0.95rem;
  color: var(--color-text-light);
}

.section-cta {
  text-align: center;
  margin-top: clamp(40px, 5vw, 64px);
}

/* ============================================
   NEWS / BANNERS
   ============================================ */
.section-news {
  background: #FFFFFF;
  padding: clamp(56px, 6vw, 80px) 40px;
}

/* スライダーラッパー */
.news-slider-wrapper {
  position: relative;
  overflow: hidden;       /* はみ出しを隐す */
  padding: 0 56px;        /* 矢印ボタン分 */
}

/* 横並びflexトラック */
.news-banners {
  display: flex;
  flex-direction: row;
  gap: 24px;
  transition: transform 0.55s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  will-change: transform;
  cursor: grab;
  user-select: none;
}

.news-banners.no-transition {
  transition: none;
}

.news-banners.dragging {
  cursor: grabbing;
  transition: none;
}

/* スライダーボタン */
.slider-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(255,255,255,0.9);
  border: 1px solid rgba(0,0,0,0.1);
  color: var(--color-text);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 10;
  box-shadow: 0 2px 12px rgba(0,0,0,0.12);
  transition: background 0.2s, transform 0.2s;
  backdrop-filter: blur(4px);
}

.slider-btn:hover {
  background: #fff;
  transform: translateY(-50%) scale(1.08);
}

.slider-btn-prev { left: 8px; }
.slider-btn-next { right: 8px; }

/* ドットインジケーター */
.slider-dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 16px;
}

.slider-dot-item {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(0,0,0,0.2);
  cursor: pointer;
  transition: background 0.3s, transform 0.3s;
  border: none;
  padding: 0;
}

.slider-dot-item.active {
  background: var(--color-accent);
  transform: scale(1.3);
}

.news-section-header {
  text-align: center;
  margin-bottom: 48px;
}

.news-banner-item {
  flex: 0 0 clamp(220px, 28vw, 380px);
  width: clamp(220px, 28vw, 380px);
  border-radius: 12px;
  overflow: hidden;
  transition: box-shadow 0.3s;
}

.news-banner-item:hover {
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.12);
}

.news-banner-item img {
  width: 100%;
  height: auto;
  object-fit: cover;
  display: block;
}

/* ============================================
   CONCEPT
   ============================================ */
.section-concept {
  background: var(--color-bg);
}

.concept-layout {
  max-width: 1400px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 0;
  align-items: center;
  position: relative;
}

.concept-image-wrapper {
  position: relative;
  z-index: 1;
}

.concept-img {
  width: 100%;
  border-radius: 4px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.08);
  object-fit: cover;
  aspect-ratio: 3/4;
}

.concept-text {
  position: relative;
  z-index: 2;
  background: var(--color-bg);
  padding: clamp(32px, 4vw, 64px);
  margin-left: -60px;
  border-radius: 4px;
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.04);
}

.concept-lead {
  margin-top: 20px;
  margin-bottom: 32px;
  line-height: 2;
  color: var(--color-text-light);
}

/* ============================================
   CATALOG / GALLERY
   ============================================ */
.section-catalog {
  background: #F2EFE9;
  padding: clamp(32px, 4vw, 56px) 40px;
}

.catalog-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(16px, 2vw, 28px);
}

/* 6枚グリッド：3列×2行 */

.catalog-item {
  background: var(--color-bg);
  border-radius: 8px;
  overflow: hidden;
  transition: transform 0.3s var(--ease-out), box-shadow 0.3s;
}

.catalog-item:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.1);
}

.catalog-img-wrapper {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4/5;
}

.catalog-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s var(--ease-out);
}

.catalog-item:hover .catalog-img {
  transform: scale(1.05);
}

.catalog-info {
  padding: 20px 24px 24px;
}

.catalog-item-title {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 400;
  letter-spacing: 0.04em;
  margin-bottom: 12px;
  color: var(--color-text);
}

.catalog-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.tag {
  display: inline-block;
  padding: 4px 12px;
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  background: var(--color-bg-warm);
  border: 1px solid var(--color-border);
  border-radius: 20px;
  color: var(--color-text-light);
  white-space: nowrap;
}

/* ============================================
   GUIDE (2 COLUMNS)
   ============================================ */
.section-guide {
  background: var(--color-bg);
}

.guide-grid {
  max-width: 1400px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(24px, 3vw, 48px);
}

.guide-card {
  position: relative;
  overflow: hidden;
  border-radius: 8px;
  background: var(--color-bg-warm);
  transition: box-shadow 0.3s;
}

.guide-card:hover {
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.06);
}

.guide-card-img-wrapper {
  overflow: hidden;
  aspect-ratio: 16/10;
}

.guide-card-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s var(--ease-out);
}

.guide-card:hover .guide-card-img {
  transform: scale(1.03);
}

.guide-card-body {
  padding: clamp(24px, 3vw, 40px);
}

.guide-card-biz-badge {
  display: inline-block;
  background: var(--color-text);
  color: #FFFFFF;
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  padding: 4px 12px;
  border-radius: 2px;
  margin-bottom: 8px;
}

.guide-card-title {
  font-family: var(--font-serif);
  font-size: clamp(1.1rem, 1.8vw, 1.4rem);
  font-weight: 600;
  letter-spacing: 0.06em;
  margin-top: 8px;
  margin-bottom: 16px;
  line-height: 1.5;
}

.guide-card-text {
  color: var(--color-text-light);
  margin-bottom: 24px;
  line-height: 1.9;
}

/* ============================================
   SHOP INFO — 左右均等・エディトリアル
   ============================================ */
.section-shop {
  background: #1e1e1e;
  color: #f0ede8;
}

.shop-layout {
  max-width: 1400px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: clamp(40px, 5vw, 80px);
  align-items: center;
}

/* 左カラム：写真＋キャプション */
.shop-image-col {
  position: sticky;
  top: 100px;
}

.shop-img-frame {
  position: relative;
  overflow: hidden;
  border-radius: 4px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
}

.shop-img {
  width: 100%;
  height: auto;
  aspect-ratio: 3/2;
  object-fit: cover;
  object-position: center top;
  display: block;
  transition: transform 0.6s var(--ease-out);
}

.shop-img-frame:hover .shop-img {
  transform: scale(1.03);
}

.shop-img-caption {
  margin-top: 16px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.shop-img-caption-en {
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-style: italic;
  letter-spacing: 0.18em;
  color: rgba(240,237,232,0.55);
}

.shop-img-caption-ja {
  font-size: 0.8rem;
  color: rgba(240,237,232,0.55);
  letter-spacing: 0.06em;
}

/* 右カラム：情報 */
.shop-info-col {
  /* sticky解除 */
}

.shop-info-inner {
  /* padding不要、section-paddingで十分 */
}

.shop-details {
  margin-top: 32px;
  margin-bottom: 32px;
  border-top: 1px solid rgba(240,237,232,0.2);
}

.shop-detail-row {
  display: grid;
  grid-template-columns: 6em 1fr;
  gap: 0 16px;
  padding: 16px 0;
  border-bottom: 1px solid rgba(240,237,232,0.2);
  align-items: baseline;
}

.shop-details dt {
  font-size: 0.78rem;
  font-weight: 500;
  color: rgba(240,237,232,0.55);
  letter-spacing: 0.06em;
}

.shop-details dd {
  font-size: 0.95rem;
  line-height: 1.7;
}

.shop-map {
  margin-bottom: 24px;
  border-radius: 4px;
  overflow: hidden;
  border: 1px solid rgba(240,237,232,0.2);
}

.shop-map iframe {
  width: 100%;
  display: block;
}

/* ============================================
   FAQ
   ============================================ */
.section-faq {
  background: var(--color-bg);
}

.faq-layout {
  max-width: 900px;
  margin: 0 auto;
}

.faq-list {
  margin-top: 48px;
}

.faq-item {
  border-bottom: 1px solid var(--color-border);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 0;
  font-family: var(--font-serif);
  font-size: clamp(0.95rem, 1.2vw, 1.1rem);
  font-weight: 600;
  letter-spacing: 0.04em;
  cursor: pointer;
  list-style: none;
  transition: color 0.2s;
}

.faq-question::-webkit-details-marker {
  display: none;
}

.faq-question::after {
  content: '+';
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 300;
  color: var(--color-text-muted);
  transition: transform 0.3s var(--ease-out);
  flex-shrink: 0;
  margin-left: 16px;
}

details[open] .faq-question::after {
  transform: rotate(45deg);
}

.faq-answer {
  padding: 0 0 24px;
  color: var(--color-text-light);
  line-height: 2;
}

/* ============================================
   FOOTER
   ============================================ */
.site-footer {
  background: var(--color-text);
  color: var(--color-bg);
  padding: clamp(48px, 6vw, 80px) clamp(20px, 5vw, 80px);
}

.footer-inner {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 32px;
  text-align: center;
}

.footer-logo {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  display: block;
}

.footer-logo-en {
  font-family: var(--font-display);
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.5);
  letter-spacing: 0.15em;
  font-weight: 300;
  display: block;
  margin-top: 4px;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 20px 32px;
}

.footer-nav a {
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.7);
  transition: color 0.2s;
}

.footer-nav a:hover {
  color: #FFFFFF;
}

.footer-copy {
  font-size: 0.72rem;
  color: rgba(255, 255, 255, 0.4);
  letter-spacing: 0.04em;
  margin-top: 16px;
}

/* ============================================
   SCROLL ANIMATIONS
   ============================================ */
/* アニメーション: JS付与後に発火 */
/* アニメーション廃止 — 全要素常時表示 */
.fade-in,
.fade-in-left,
.fade-in-right {
  opacity: 1 !important;
  transform: none !important;
}

.fade-in.animate,
.fade-in-left.animate,
.fade-in-right.animate {
  opacity: 1 !important;
  transform: none !important;
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
  .global-nav {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .global-nav.active {
    display: flex;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    justify-content: center;
    align-items: center;
    z-index: 999;
  }

  .global-nav.active .nav-list {
    flex-direction: column;
    align-items: center;
    gap: 32px;
  }

  .global-nav.active .nav-list a {
    font-size: 1.1rem;
  }

  .header-cta {
    display: none;
  }

  .concept-layout {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .concept-text {
    margin-left: 20px;
    margin-right: 20px;
    margin-top: -40px;
  }

  .shop-layout {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .shop-image-col {
    position: static;
  }

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

  .catalog-grid {
    grid-template-columns: repeat(2, 1fr);
    padding: 0;
  }

  .hero-scroll-indicator {
    display: none;
  }
}

@media (max-width: 768px) {
  /* ヘッダー */
  .header-inner {
    padding: 0 20px;
    height: 60px;
  }

  .site-header:not(.scrolled) {
    padding-top: 10px;
  }

  .logo-main {
    font-size: 1.3rem;
  }

  .logo-sub {
    font-size: 0.65rem;
  }

  .site-header:not(.scrolled) .logo-main {
    font-size: 1.3rem;
  }

  .site-header:not(.scrolled) .logo-sub {
    font-size: 0.65rem;
  }

  .hero {
    min-height: 90vh;
    align-items: flex-end;
  }

  .hero-inner {
    padding: 0 12px clamp(48px, 10vw, 72px);
  }

  .hero-title-line,
  .hero-title-accent {
    font-size: clamp(1.8rem, 8vw, 2.6rem);
  }

  /* モバイルでも「バルーンギフトを。」は1行に */
  .hero-title-accent {
    white-space: nowrap;
    font-size: clamp(1.6rem, 7vw, 2.4rem);
  }

  .hero-actions {
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
  }

  .btn-hero-line,
  .btn-hero-ghost {
    width: 100%;
    justify-content: center;
  }

  /* バナースライダー：スマホでも横スクロール */
  .news-slider-wrapper {
    padding: 0 36px;
  }

  .news-banners {
    flex-direction: row;
    gap: 16px;
  }

  .news-banner-item {
    flex: 0 0 75vw;
    width: 75vw;
  }

  .slider-btn {
    width: 36px;
    height: 36px;
  }

  .catalog-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
    padding: 0;
  }

  .catalog-img-wrapper {
    aspect-ratio: 3/4;
  }

  .catalog-info {
    padding: 14px 16px 18px;
  }

  .catalog-item-title {
    font-size: 0.85rem;
  }

  .tag {
    font-size: 0.65rem;
    padding: 3px 8px;
  }

  .shop-detail-row {
    grid-template-columns: 5em 1fr;
  }

  /* セクション共通余白 */
  .section {
    padding-left: 20px;
    padding-right: 20px;
  }

  .section-news {
    padding: clamp(40px, 8vw, 64px) 20px;
  }

  .news-section-header {
    margin-bottom: 32px;
  }

  /* 見出し英語表記 */
  .section-en-deco {
    font-size: clamp(1.6rem, 6vw, 2.4rem);
  }

  /* セクションタイトル */
  .section-title {
    font-size: clamp(1.3rem, 5vw, 1.8rem);
  }

  /* イラスト：スマホでは小さく */
  .hero-illust {
    width: clamp(120px, 35vw, 200px);
    right: -10px;
    bottom: 40px;
    opacity: 0.4;
  }

  .catalog-illust {
    width: clamp(60px, 16vw, 100px);
    opacity: 0.25;
  }

  .concept-illust-deco {
    width: clamp(60px, 16vw, 100px);
    opacity: 0.25;
  }

  /* コンセプト */
  .concept-text {
    margin: -20px 16px 0;
    padding: 24px 20px 28px;
  }

  /* ショップ */
  .shop-layout {
    gap: 24px;
  }

  /* FAQ */
  .faq-question {
    font-size: 0.9rem;
    padding: 18px 40px 18px 16px;
  }

  .faq-answer {
    padding: 0 16px;
  }

  /* フッター */
  .footer-nav {
    flex-direction: column;
    gap: 12px;
    align-items: center;
  }
}

@media (max-width: 480px) {
  .catalog-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .catalog-item-title {
    font-size: 0.78rem;
  }

  .hero-title-accent {
    font-size: clamp(1.4rem, 6.5vw, 2rem);
  }

  /* バナー幅を小さいスマホでも少し広めに */
  .news-banner-item {
    flex: 0 0 82vw;
    width: 82vw;
  }

  /* ヘッダーロゴ */
  .logo-main {
    font-size: 1.15rem;
  }

  /* FVコピー */
  .hero-inner {
    padding: 0 16px clamp(40px, 10vw, 60px);
  }

  .hero-subtitle {
    font-size: 0.7rem;
  }

  .hero-lead {
    font-size: 0.78rem;
    max-width: 100%;
  }

  /* ボタン */
  .btn-hero-line,
  .btn-hero-ghost {
    font-size: 0.85rem;
    padding: 13px 20px;
  }

  /* カタログ情報 */
  .catalog-info {
    padding: 10px 12px 14px;
  }

  .catalog-item-tags {
    gap: 4px;
  }

  /* コンセプト */
  .concept-title {
    font-size: clamp(1.2rem, 5vw, 1.6rem);
  }

  /* ショップ */
  .shop-detail-table {
    font-size: 0.85rem;
  }

  /* フッター */
  .footer-logo-main {
    font-size: 1.1rem;
  }

  .footer-copy {
    font-size: 0.72rem;
  }
}

/* ============================================
   SCROLL ANIMATIONS
   ============================================ */
.scroll-hidden {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94),
              transform 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.scroll-hidden.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* カタログアイテムは少し遅延をずらす */
.catalog-item:nth-child(1) { transition-delay: 0.05s; }
.catalog-item:nth-child(2) { transition-delay: 0.12s; }
.catalog-item:nth-child(3) { transition-delay: 0.19s; }
.catalog-item:nth-child(4) { transition-delay: 0.05s; }
.catalog-item:nth-child(5) { transition-delay: 0.12s; }
.catalog-item:nth-child(6) { transition-delay: 0.19s; }

/* FAQアイテムも少しずらす */
.faq-item:nth-child(1) { transition-delay: 0.04s; }
.faq-item:nth-child(2) { transition-delay: 0.10s; }
.faq-item:nth-child(3) { transition-delay: 0.16s; }

/* ============================================
   ILLUSTRATION DECORATIONS
   ============================================ */

/* FV右下のバルーンブーケイラスト */
.hero-illust {
  position: absolute;
  right: -40px;
  bottom: -20px;
  width: clamp(200px, 28vw, 420px);
  pointer-events: none;
  z-index: 2;
  opacity: 0.55;
  filter: drop-shadow(0 8px 24px rgba(0,0,0,0.15));
  animation: float-illust 6s ease-in-out infinite;
}

.hero-illust-img {
  width: 100%;
  height: auto;
  display: block;
}

@keyframes float-illust {
  0%, 100% { transform: translateY(0px) rotate(-2deg); }
  50%       { transform: translateY(-18px) rotate(2deg); }
}

/* カタログセクションの右上ハートバルーンイラスト */
.catalog-section-header {
  position: relative;
}

.catalog-illust {
  position: absolute;
  right: -20px;
  top: -40px;
  width: clamp(100px, 14vw, 200px);
  pointer-events: none;
  opacity: 0.35;
  filter: drop-shadow(0 4px 12px rgba(0,0,0,0.08));
  animation: float-illust 7s ease-in-out infinite;
  animation-delay: 1s;
}

.catalog-illust-img {
  width: 100%;
  height: auto;
  display: block;
}

/* コンセプトセクションの左上スターバルーンイラスト */
.concept-illust-deco {
  position: absolute;
  left: 20px;
  top: 20px;
  width: clamp(80px, 10vw, 160px);
  pointer-events: none;
  opacity: 0.3;
  filter: drop-shadow(0 4px 12px rgba(0,0,0,0.08));
  animation: float-illust 8s ease-in-out infinite;
  animation-delay: 2s;
  z-index: 1;
}

.concept-illust-img {
  width: 100%;
  height: auto;
  display: block;
}

/* コンセプトセクションはposition: relativeが必要 */
.section-concept {
  position: relative;
  overflow: hidden;
}

/* ============================================
   CATEGORY SEARCH SECTION
   ============================================ */
.section-category {
  background: var(--color-bg-warm);
  padding: clamp(56px, 6vw, 96px) clamp(24px, 5vw, 80px);
}

.section-category .section-header {
  text-align: center;
  margin-bottom: clamp(40px, 5vw, 64px);
}

.category-group {
  max-width: 960px;
  margin: 0 auto 40px;
}

.category-group:last-of-type {
  margin-bottom: 0;
}

.category-group-title {
  font-family: var(--font-serif);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--color-text-muted);
  text-transform: uppercase;
  margin-bottom: 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border);
}

.category-btn-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.category-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  border: 1px solid var(--color-border-dark);
  border-radius: 40px;
  font-size: 0.82rem;
  font-family: var(--font-sans);
  font-weight: 400;
  letter-spacing: 0.04em;
  color: var(--color-text);
  background: #FFFFFF;
  text-decoration: none;
  transition: background 0.2s, border-color 0.2s, color 0.2s, transform 0.15s;
  white-space: nowrap;
}

.category-btn:hover {
  background: var(--color-text);
  border-color: var(--color-text);
  color: #FFFFFF;
  transform: translateY(-2px);
}

/* カラーボタン：左端にカラードット */
.category-btn--color::before {
  content: '';
  display: inline-block;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--btn-color, #ccc);
  flex-shrink: 0;
  border: 1px solid rgba(0,0,0,0.08);
}

/* カラフル・ミックスはレインボーグラデーション */
.category-btn--rainbow::before {
  background: linear-gradient(135deg, #f88, #ff8, #8f8, #88f, #f8f);
}

/* スマホ対応 */
@media (max-width: 768px) {
  .section-category {
    padding: clamp(40px, 8vw, 64px) 20px;
  }

  .category-group {
    margin-bottom: 28px;
  }

  .category-btn {
    font-size: 0.78rem;
    padding: 7px 14px;
  }
}

/* ===== BUSINESS SECTION ===== */
.section-business {
  background: var(--color-bg-warm);
  padding: 80px 40px;
}

.business-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
}

.business-image-col {
  border-radius: 4px;
  overflow: hidden;
}

.business-img {
  width: 100%;
  height: 420px;
  object-fit: cover;
  display: block;
  border-radius: 4px;
}

.business-text-col {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.business-badge {
  display: inline-block;
  background: var(--color-dark, #222);
  color: #fff;
  font-size: 0.72rem;
  font-family: var(--font-sans);
  letter-spacing: 0.08em;
  padding: 4px 12px;
  border-radius: 2px;
  width: fit-content;
}

.business-lead {
  font-size: 0.95rem;
  line-height: 1.9;
  color: var(--color-text-light);
  font-family: var(--font-sans);
}

@media (max-width: 768px) {
  .section-business {
    padding: 56px 20px;
  }

  .business-layout {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .business-img {
    height: 240px;
  }
}

/* ===== SHOP SECTION DARK THEME OVERRIDES ===== */
.section-shop .section-en-deco {
  color: rgba(240, 237, 232, 0.3);
}

.section-shop .section-title {
  color: #f0ede8;
}

.section-shop .section-lead {
  color: rgba(240, 237, 232, 0.7);
}

.section-shop .btn-text {
  color: #f0ede8;
  border-bottom-color: rgba(240, 237, 232, 0.6);
}

.section-shop .btn-text:hover {
  color: #ffffff;
  border-bottom-color: #ffffff;
}

.section-shop .shop-img-frame {
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

/* ============================================
   MOBILE FIXES & LAYOUT OPTIMIZATION
   追記：スマホ版メニュー文字色修正 + レイアウト最適化
   ============================================ */

/* ---- 1. グローバルメニュー展開時の文字色修正 ----
   背景が白（rgba(255,255,255,0.98)）のため、
   nav-list a の色を白から暗色に上書きする
   メディアクエリなし：展開時は常に暗色（デスクトップでは.hamburgerが非表示なので問題なし） */
.global-nav.active .nav-list a {
  color: var(--color-text) !important; /* #222 */
}

/* ハンバーガーボタン：メニュー展開中は×マークを暗色に */
.hamburger.active span {
  background: var(--color-text) !important; /* #222 */
}

/* ---- 2. スマホ版レイアウト最適化（max-width: 768px） ---- */
@media (max-width: 768px) {

  /* Newsスライダー：左右余白を確保し画面端に張り付かないように */
  .section-news {
    padding-left: 0;
    padding-right: 0;
  }

  .news-section-header {
    padding-left: 20px;
    padding-right: 20px;
  }

  .news-slider-outer {
    padding: 0 16px;
  }

  /* バルーンカタログカード：左右余白を確保 */
  .catalog-grid {
    padding: 0 16px !important;
  }

  /* カタログセクション全体の余白調整 */
  .section-catalog {
    padding-left: 0;
    padding-right: 0;
  }

  .catalog-section-header {
    padding-left: 20px;
    padding-right: 20px;
  }

  /* カタログの「もっと見る」ボタンエリア */
  .catalog-more {
    padding-left: 20px;
    padding-right: 20px;
  }

  /* セクション見出し（h2）フォントサイズを適切に調整 */
  .section-title {
    font-size: clamp(1.2rem, 4.5vw, 1.6rem);
  }

  /* 英語デコレーション見出し */
  .section-en-deco {
    font-size: clamp(1.4rem, 5.5vw, 2rem);
  }

  /* カテゴリー検索セクションの余白 */
  .section-category {
    padding-left: 16px;
    padding-right: 16px;
  }
}

/* ============================================
   HORIZONTAL SCROLL FIX
   追記：横スクロール（横揺れ）の強制ブロック
   ============================================ */

/* html要素にもoverflow-x: hiddenを設定
   （bodyだけでは不十分な場合がある） */
html {
  overflow-x: hidden;
}

/* 100vwを使用している要素をスクロールバー幅の影響から保護 */
@media (max-width: 768px) {
  /* hero-illustのright値を調整してはみ出しを防止 */
  .hero-illust {
    right: 0;
    overflow: hidden;
  }

  /* section-header内のcatalog-section-headerのはみ出し防止 */
  .section-header,
  .catalog-section-header {
    max-width: 100%;
    overflow: hidden;
  }

  /* 全セクションが画面幅を超えないよう保護 */
  section {
    max-width: 100vw;
    overflow-x: hidden;
  }
}

/* ============================================
   MOBILE UI/UX IMPROVEMENTS v2
   追記：スマホUI/UX課題の解消（2025-06-03）
   ============================================ */

/* ---- 1. セクション間の巨大スペース解消 ----
   section-catalogの下padding・margin-bottomを適切な値に制限 */
@media (max-width: 768px) {
  .section-catalog {
    padding-top: clamp(40px, 8vw, 64px) !important;
    padding-bottom: clamp(40px, 8vw, 64px) !important;
  }

  /* section共通のpadding-bottomも適切に制限 */
  .section {
    padding-top: clamp(40px, 8vw, 64px) !important;
    padding-bottom: clamp(40px, 8vw, 64px) !important;
  }

  /* section-newsも同様 */
  .section-news {
    padding-top: clamp(40px, 8vw, 64px) !important;
    padding-bottom: clamp(40px, 8vw, 64px) !important;
  }
}

/* ---- 2. FV（ファーストビュー）スマホ画面内に収める ---- */
@media (max-width: 768px) {
  .hero {
    /* 100svh: スマホのアドレスバーを除いた実際の画面高さ */
    height: 100svh;
    min-height: 100svh;
    /* フォールバック：svhが非対応の場合 */
    height: 100vh;
    height: 100svh;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    overflow: hidden;
  }

  .hero-inner {
    padding-bottom: clamp(32px, 8vw, 56px) !important;
    padding-top: 80px; /* ヘッダー分の余白 */
  }

  /* FV内コンテンツが画面内に確実に収まるよう */
  .hero-content {
    max-height: calc(100svh - 140px);
    overflow: visible;
  }
}

/* ---- 3. バルーンカタログ画像の縦長解消（スマホ） ---- */
@media (max-width: 768px) {
  .catalog-img-wrapper {
    aspect-ratio: 1 / 1 !important; /* 正方形トリミング */
  }
}

/* ---- 4. Newsバナー矢印ボタンをスマホで非表示 ---- */
@media (max-width: 768px) {
  /* スマホではスワイプ操作のみ → 矢印ボタンを非表示 */
  #newsPrev,
  #newsNext,
  .news-slider-btn,
  .news-slider-prev,
  .news-slider-next {
    display: none !important;
  }

  /* 矢印がなくなった分、スライダーの左右パディングを解放 */
  .news-slider-wrapper {
    padding-left: 16px !important;
    padding-right: 16px !important;
  }

  /* バナー幅を画面幅いっぱいに近づける */
  .news-banner-item {
    flex: 0 0 88vw !important;
    width: 88vw !important;
  }
}

/* ---- 5. グローバルメニュー：モダン・ミニマルデザイン刷新 ---- */

/* メニュー展開時のオーバーレイ：わずかな透過＋blur */
.global-nav.active {
  background: rgba(255, 255, 255, 0.95) !important;
  backdrop-filter: blur(16px) !important;
  -webkit-backdrop-filter: blur(16px) !important;
  /* フェードインアニメーション */
  animation: menuFadeIn 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94) both;
}

@keyframes menuFadeIn {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ナビリスト：ゆったりとしたタイポグラフィ */
.global-nav.active .nav-list {
  gap: 40px !important;
}

.global-nav.active .nav-list a {
  font-size: 1.05rem !important;
  letter-spacing: 0.12em !important;
  line-height: 1.8 !important;
  font-weight: 400 !important;
  color: var(--color-text) !important;
  text-decoration: none;
  position: relative;
  transition: color 0.25s, opacity 0.25s;
  opacity: 0.85;
}

.global-nav.active .nav-list a:hover {
  opacity: 1;
  color: var(--color-text) !important;
}

/* 各リンクにアンダーラインアニメーション */
.global-nav.active .nav-list a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-text);
  transition: width 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.global-nav.active .nav-list a:hover::after {
  width: 100%;
}

/* ハンバーガー（×マーク）：細めでスタイリッシュに */
.hamburger.active span {
  background: var(--color-text) !important;
  height: 1px !important; /* 細めのライン */
}


/* ============================================================
   PHASE 5 FIXES: ドット中央揃え・スマホバナーサイズ・メニューデザイン刷新
   ============================================================ */

/* ---- 1. ドットナビゲーション：中央揃え ---- */
#sliderDots,
.news-slider-dots {
  display: flex !important;
  justify-content: center !important;
  align-items: center !important;
  width: 100% !important;
  left: 0 !important;
  gap: 6px;
}

/* ---- 2. スマホ版：Newsバナーを2枚表示サイズに最適化 ---- */
@media (max-width: 768px) {
  .news-banner-item {
    flex: 0 0 clamp(140px, 44vw, 200px) !important;
    width: clamp(140px, 44vw, 200px) !important;
  }
  .news-banner-item img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 8px;
  }
  /* Newsスライダー：スマホ時は矢印ボタンを非表示 */
  .news-slider-btn {
    display: none !important;
  }
  /* スライダー左右余白を確保 */
  .news-slider-wrapper {
    padding-left: 16px !important;
    padding-right: 16px !important;
  }
}

/* ---- 3. スマホ版グローバルメニュー：モダン・ミニマルデザイン刷新 ---- */
@media (max-width: 1024px) {
  /* メニュー背景：フロストガラス質感 */
  .global-nav.active {
    background: rgba(255, 255, 255, 0.97) !important;
    backdrop-filter: blur(16px) saturate(180%) !important;
    -webkit-backdrop-filter: blur(16px) saturate(180%) !important;
    box-shadow: 0 8px 40px rgba(0, 0, 0, 0.08) !important;
  }

  /* メニューリスト：中央揃え・ゆったりとした縦並び */
  .global-nav.active .nav-list {
    display: flex !important;
    flex-direction: column !important;
    align-items: center !important;
    justify-content: center !important;
    text-align: center !important;
    gap: 0 !important;
    padding: 80px 24px 40px !important;
    height: 100%;
    list-style: none;
  }

  /* 各メニュー項目 */
  .global-nav.active .nav-list li {
    width: 100%;
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
    padding: 0;
  }
  .global-nav.active .nav-list li:first-child {
    border-top: 1px solid rgba(0, 0, 0, 0.06);
  }

  /* メニューリンク：優雅なタイポグラフィ */
  .global-nav.active .nav-list a {
    display: block !important;
    padding: 18px 24px !important;
    font-size: 1.05rem !important;
    font-weight: 400 !important;
    letter-spacing: 0.18em !important;
    line-height: 1.6 !important;
    color: #222 !important;
    text-align: center !important;
    text-decoration: none !important;
    transition: background 0.2s, color 0.2s, opacity 0.2s !important;
    opacity: 1 !important;
  }
  .global-nav.active .nav-list a:hover {
    background: rgba(0, 0, 0, 0.03) !important;
    color: #555 !important;
  }
  /* アンダーラインアニメーション無効化（中央揃えと干渉するため） */
  .global-nav.active .nav-list a::after {
    display: none !important;
  }

  /* LINEボタン：メニュー内で目立つCTAに */
  .global-nav.active .btn-header-line {
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    gap: 8px !important;
    margin: 24px auto 0 !important;
    padding: 14px 32px !important;
    background: #06c755 !important;
    color: #fff !important;
    border-radius: 40px !important;
    font-size: 0.95rem !important;
    font-weight: 500 !important;
    letter-spacing: 0.08em !important;
    text-decoration: none !important;
    width: fit-content !important;
    box-shadow: 0 4px 16px rgba(6, 199, 85, 0.3) !important;
  }

  /* ハンバーガー（×マーク）：細めでスタイリッシュ */
  .hamburger.active span {
    background: #222 !important;
    height: 1px !important;
  }
}

/* ============================================
   シズオカ録音企画 ヘッダーボタン
   ============================================ */
.btn-header-rockon {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: transparent;
  color: #FFFFFF;
  border: 1px solid rgba(255,255,255,0.6);
  padding: 9px 18px;
  border-radius: 2px;
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  white-space: nowrap;
  transition: background 0.22s, color 0.22s, border-color 0.22s;
  text-decoration: none;
}

.btn-header-rockon:hover {
  background: rgba(255,255,255,0.15);
}

.site-header.scrolled .btn-header-rockon {
  color: #2a1a10;
  border-color: #c9b99a;
}

.site-header.scrolled .btn-header-rockon:hover {
  background: #2a1a10;
  color: #fff;
  border-color: #2a1a10;
}

@media (max-width: 768px) {
  .btn-header-rockon {
    display: none;
  }
}

/* ============================================
   シズオカ録音企画 フッターリンク
   ============================================ */
.footer-rockon {
  text-align: center;
  margin-bottom: 16px;
}

.footer-rockon a {
  display: inline-block;
  color: rgba(255, 255, 255, 0.55);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
  padding-bottom: 2px;
  transition: color 0.2s, border-color 0.2s;
}

.footer-rockon a:hover {
  color: rgba(255, 255, 255, 0.85);
  border-color: rgba(255, 255, 255, 0.5);
}