:root {
  --color-bg: #faf8f5;
  --color-bg-elevated: #ffffff;
  --color-text-main: #2c2420;
  --color-text-sub: #6b5d54;
  --color-text-light: #8f8379;
  --color-accent-gold: #c9a961;
  --color-accent-teal: #4a7c7e;
  --color-border: rgba(108, 93, 84, 0.15);
  --color-border-strong: rgba(108, 93, 84, 0.3);
  --shadow-medium: 0 4px 24px rgba(44, 36, 32, 0.12);
  --shadow-soft: 0 2px 12px rgba(44, 36, 32, 0.08);
  --font-serif-jp: "Shippori Mincho", serif;
  --font-serif-en: "Cinzel", serif;
  --font-text: "Noto Serif JP", serif;
  --radius-md: 16px;
  --radius-lg: 24px;
  --transition-fast: 0.2s ease;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-text);
  color: var(--color-text-main);
  background: var(--color-bg);
  line-height: 1.8;
}

/* パã?ãƒ?‚£ã‚¯ãƒ«ãƒ¬ã‚¤ãƒ¤ãƒ¼ - 修正ç‰? */
.text-particle-layer {
  position: fixed;
  inset: 0;
  z-index: 10;  /* � 修正: pageより上� */
  pointer-events: none;
  mix-blend-mode: multiply;
  opacity: 0.35;
}

.container { max-width: 1200px; margin: 0 auto; padding: 0 40px; }
section { padding: 120px 0; position: relative; z-index: 1; }

/* HEADER */
.main-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 80px;
  background: rgba(250, 248, 245, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  z-index: 1000;
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 40px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo-jp {
  font-family: var(--font-serif-jp);
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 0.08em;
}

.logo-en {
  font-family: var(--font-serif-en);
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--color-text-sub);
}

.main-nav {
  display: flex;
  gap: 40px;
}

.main-nav a {
  font-family: var(--font-serif-en);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--color-text-sub);
  text-decoration: none;
  transition: color 0.3s ease;
  position: relative;
}

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

.main-nav a:hover {
  color: var(--color-accent-teal);
}

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


/* HERO */
.hero {
  height: 100vh;
  min-height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  overflow: hidden;
}

/* 背景動画 */
.hero-video-wrapper {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
}

.hero-video {
  position: absolute;
  top: 50%;
  left: 50%;
  min-width: 100%;
  min-height: 100%;
  width: auto;
  height: auto;
  transform: translate(-50%, -50%);
  object-fit: cover;
}

.hero-video-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(250, 248, 245, 0) 0%,
    rgba(250, 248, 245, 0.05) 80%,
    rgba(250, 248, 245, 0.1) 100%
  );
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero-logo {
  margin-bottom: 60px;
}

.hero-logo-image {
  max-width: 700px;
  width: 100%;
  height: auto;
  filter: drop-shadow(0 8px 24px rgba(0, 0, 0, 0.3));
}

.hero-tagline {
  font-family: var(--font-serif-jp);
  font-size: 24px;
  font-weight: 500;
  letter-spacing: 0.12em;
  margin: 0 0 20px 0;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
  font-size: 15px;
  line-height: 2;
  color: var(--color-text-main);
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

/* RELEASE / TIMELINE */
.release-section {
  background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-elevated) 100%);
  padding: 100px 0;
}

/* 2026年�メインボックス */
.release-main-box {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-medium);
  padding: 60px;
}

/* ヘッãƒ?ー部åˆ?¼?2026å¹´?? */
.release-header {
  display: grid;
  grid-template-columns: 140px 1fr auto;
  gap: 40px;
  align-items: center;
  padding-bottom: 40px;
  margin-bottom: 40px;
  border-bottom: 1px solid var(--color-border);
}

.release-year {
  font-family: var(--font-serif-en);
  font-size: 80px;
  font-weight: 600;
  color: var(--color-accent-gold);
  line-height: 1;
}

.release-title {
  font-family: var(--font-serif-jp);
  font-size: 32px;
  font-weight: 600;
  letter-spacing: 0.08em;
  margin-bottom: 12px;
}

.release-description {
  font-size: 15px;
  line-height: 1.9;
  color: var(--color-text-sub);
}

.release-badge {
  padding: 16px 32px;
  background: var(--color-accent-teal);
  border-radius: 8px;
  color: var(--color-bg-elevated);
  font-family: var(--font-serif-en);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.12em;
  white-space: nowrap;
}

/* タイムライン年表 */
.timeline-wrapper {
  position: relative;
  padding: 20px 0;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.5s ease-out, opacity 0.3s ease;
  opacity: 0;
}

.timeline-wrapper.open {
  max-height: 1000px;
  opacity: 1;
  padding: 40px 0 20px 0;
}

/* アコーãƒ?‚£ã‚ªãƒ³ãƒœã‚¿ãƒ³ */
.timeline-toggle {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 16px 24px;
  background: rgba(74, 124, 126, 0.1);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.3s ease;
  font-family: var(--font-serif-jp);
  font-size: 15px;
  font-weight: 500;
  color: var(--color-accent-teal);
  letter-spacing: 0.08em;
}

.timeline-toggle:hover {
  background: rgba(74, 124, 126, 0.15);
  border-color: var(--color-accent-teal);
}

.toggle-icon {
  width: 20px;
  height: 20px;
  transition: transform 0.3s ease;
}

.timeline-toggle[aria-expanded="true"] .toggle-icon {
  transform: rotate(180deg);
}


/* 中央�縦� */
.timeline-line {
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--color-border-strong);
  transform: translateX(-50%);
}

/* タイムラインアイãƒ?ƒ  */
.timeline-item {
  position: relative;
  margin-bottom: 40px;
  display: flex;
  align-items: flex-start;
}

.timeline-item:last-child {
  margin-bottom: 0;
}

/* ドッ� */
.timeline-dot {
  position: absolute;
  left: 50%;
  top: 8px;
  width: 16px;
  height: 16px;
  background: var(--color-accent-teal);
  border: 3px solid var(--color-bg-elevated);
  border-radius: 50%;
  transform: translateX(-50%);
  z-index: 2;
  box-shadow: 0 0 0 3px var(--color-border);
}

/* ���置 */
.timeline-right {
  justify-content: flex-start;
  padding-left: calc(50% + 30px);
}

/* 左��置 */
.timeline-left {
  justify-content: flex-end;
  padding-right: calc(50% + 30px);
}

/* コンãƒ?ƒ³ãƒ??ãƒ?‚¯ã‚¹ */
.timeline-content-box {
  background: rgba(255, 255, 255, 0.6);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px 28px;
  max-width: 400px;
  transition: all 0.3s ease;
}

.timeline-content-box:hover {
  background: var(--color-bg-elevated);
  border-color: var(--color-border-strong);
  transform: translateY(-2px);
  box-shadow: var(--shadow-soft);
}

.timeline-date {
  font-family: var(--font-serif-en);
  font-size: 16px;
  font-weight: 600;
  color: var(--color-accent-teal);
  margin-bottom: 8px;
}

.timeline-subtitle {
  font-family: var(--font-serif-jp);
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 0.06em;
  margin-bottom: 8px;
  color: var(--color-text-main);
}

.timeline-text {
  font-size: 13px;
  line-height: 1.8;
  color: var(--color-text-sub);
  margin: 0;
}


/* YOUTUBE */
.youtube-section { padding: 120px 0; }
.section-title { text-align: center; margin-bottom: 60px; }
.title-en {
  font-family: var(--font-serif-en);
  font-size: 14px;
  letter-spacing: 0.2em;
  color: var(--color-text-light);
  display: block;
  margin-bottom: 8px;
}
.title-jp {
  font-family: var(--font-serif-jp);
  font-size: 36px;
  font-weight: 600;
  letter-spacing: 0.1em;
}

.youtube-container { max-width: 900px; margin: 0 auto; }
.youtube-embed {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-medium);
  border: 1px solid var(--color-border);
  background: var(--color-bg-elevated);
}

.youtube-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-sub);
  font-family: var(--font-serif-en);
  font-size: 14px;
  letter-spacing: 0.1em;
}

/* ABOUT */
.about-section {
  background: linear-gradient(180deg, var(--color-bg-elevated) 0%, var(--color-bg) 100%);
  padding: 120px 0;
}

.about-title-main {
  font-family: var(--font-serif-jp);
  font-size: 40px;
  font-weight: 600;
  letter-spacing: 0.08em;
  line-height: 1.6;
  text-align: center;
  margin-bottom: 40px;
}

.about-story {
  max-width: 800px;
  margin: 0 auto 60px;
}

.story-paragraph {
  font-size: 16px;
  line-height: 2;
  color: var(--color-text-sub);
  text-align: center;
  margin-bottom: 24px;
}

.about-features {
  max-width: 800px;
  margin: 0 auto;
  padding-top: 40px;
  border-top: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.feature-item { text-align: center; }
.feature-title {
  font-family: var(--font-serif-jp);
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 0.08em;
  margin-bottom: 8px;
}
.feature-text {
  font-size: 14px;
  color: var(--color-text-sub);
}

/* キャラクターセクション */
.characters-section { margin-top: 80px; }

.character-carousel-container {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
  padding: 0 80px;
}

.character-carousel-track {
  overflow: hidden;
  width: 100%;
}

.character-carousel-inner {
  display: flex;
  transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.character-slide {
  min-width: 100%;
  flex-shrink: 0;
  padding: 0 20px;
}

.character-content {
  display: flex;
  flex-direction: column;
  gap: 32px;
  align-items: center;
}

.character-image-wrapper {
  width: 100%;
  max-width: 320px;
}

.character-image {
  width: 100%;
  aspect-ratio: 3/4;
  object-fit: cover;
  border-radius: var(--radius-md);
  border: 2px solid var(--color-border);
}

.character-placeholder {
  width: 100%;
  aspect-ratio: 3/4;
  background: linear-gradient(135deg, var(--color-bg-elevated) 0%, var(--color-bg) 100%);
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  color: var(--color-text-light);
}

.character-placeholder svg {
  width: 60px;
  height: 60px;
  opacity: 0.3;
}

.character-placeholder span {
  font-family: var(--font-serif-jp);
  font-size: 14px;
  letter-spacing: 0.08em;
}

.character-info {
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 16px;
  max-width: 600px;
}

.character-name {
  font-family: var(--font-serif-jp);
  font-size: 28px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--color-text-main);
  margin: 0;
}

.character-role {
  font-family: var(--font-text);
  font-size: 14px;
  color: var(--color-accent-teal);
  margin: 0;
}

.character-quote {
  font-family: var(--font-text);
  font-size: 15px;
  font-style: italic;
  color: var(--color-text-sub);
  margin: 0;
  padding: 16px 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.character-description {
  font-family: var(--font-text);
  font-size: 14px;
  line-height: 1.9;
  color: var(--color-text-sub);
  margin: 0;
  text-align: left;
}

/* カルーセルボタン */
.carousel-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.3s ease;
  z-index: 10;
}

.carousel-btn:hover {
  background: var(--color-accent-gold);
  border-color: var(--color-accent-gold);
  box-shadow: var(--shadow-medium);
}

.carousel-btn svg {
  width: 24px;
  height: 24px;
  color: var(--color-text-main);
}

.carousel-btn:hover svg {
  color: var(--color-bg-elevated);
}

.carousel-btn-prev { left: 0; }
.carousel-btn-next { right: 0; }

/* SNS */
.sns-section { padding: 120px 0; }
.sns-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin-top: 60px;
}

.sns-card {
  padding: 40px 32px;
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  text-align: center;
  transition: all 0.3s ease;
}

.sns-card a {
  display: block;
  color: inherit;
  text-decoration: none;
}

.sns-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-medium);
}

.sns-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 20px;
  color: var(--color-accent-teal);
  transition: all 0.3s ease;
}

.sns-icon svg {
  width: 100%;
  height: 100%;
}

.sns-card:hover .sns-icon {
  color: var(--color-accent-gold);
  transform: scale(1.1);
}

.sns-title {
  font-family: var(--font-serif-en);
  font-size: 18px;
  font-weight: 600;
  margin: 0 0 8px 0;
}

.sns-description {
  font-size: 13px;
  color: var(--color-text-sub);
}

/* FOOTER */
.site-footer {
  padding: 60px 0 40px;
  background: var(--color-bg-elevated);
  border-top: 1px solid var(--color-border);
  text-align: center;
}

.footer-logo-jp {
  font-family: var(--font-serif-jp);
  font-size: 20px;
  font-weight: 600;
  letter-spacing: 0.1em;
  margin-bottom: 4px;
}

.footer-logo-en {
  font-family: var(--font-serif-en);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--color-text-sub);
  margin-bottom: 24px;
}

.footer-copyright {
  font-size: 12px;
  color: var(--color-text-light);
}

.youtube-embed {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%;  /* 16:9�アスペクト� */
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-medium);
  border: 1px solid var(--color-border);
  background: var(--color-bg-elevated);
  overflow: hidden;  /* 👈 追加 */
}

.youtube-embed iframe {  /* 👈 新�追加 */
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

/* レス�ンシ� */
@media (max-width: 768px) {
  .main-nav {
    display: none;
  }
  .hero-logo-image {
    max-width: 420px;
  }
  .hero-tagline { font-size: 20px; }
  .hero-subtitle { font-size: 14px; }
  .hero-video-overlay {
    background: linear-gradient(
      to bottom,
      rgba(250, 248, 245, 0.05) 0%,
      rgba(250, 248, 245, 0.1) 80%,
      rgba(250, 248, 245, 0.15) 100%
    );
  }
  .release-main-box {
    padding: 40px 24px;
  }
  .release-header {
    grid-template-columns: 1fr;
    text-align: center;
    padding-bottom: 30px;
    margin-bottom: 30px;
    gap: 20px;
  }
  .release-year { 
    font-size: 56px; 
    margin-bottom: 0;
  }
  .release-badge { 
    margin: 0 auto;
  }
  /* スマã?ã�§ã�¯ã‚¿ã‚¤ãƒ ãƒ©ã‚¤ãƒ³ã‚’å·¦å¯?�› */
  .timeline-line {
    left: 20px;
  }
  .timeline-right,
  .timeline-left {
    padding-left: 50px;
    padding-right: 0;
    justify-content: flex-start;
  }
  .timeline-dot {
    left: 20px;
  }
  .timeline-content-box {
    max-width: 100%;
  }
  .about-title-main { font-size: 28px; }
  .character-carousel-container { padding: 0 60px; }
  .carousel-btn { width: 40px; height: 40px; }
  .carousel-btn svg { width: 20px; height: 20px; }
  .character-name { font-size: 24px; }
  .character-placeholder { max-width: 240px; }
  .sns-grid { grid-template-columns: 1fr; gap: 20px; }
}

/* ==============================
   キャラクターカルーセル?šã‚µãƒ ãƒ�インジケーター + ãƒ??ルãƒ�ッãƒ?
   ============================== */
.carousel-indicators{
  display:flex;
  justify-content:center;
  gap:12px;
  margin-top:40px;
  padding:0 16px;
  flex-wrap:wrap;            /* PC�折り返� */
  align-items:center;
}

.indicator-thumb{
  width:44px;
  height:44px;
  border-radius:999px;
  border:1px solid var(--color-border);
  background:var(--color-bg-elevated);
  overflow:hidden;           /* 丸クリ�? */
  padding:0;
  cursor:pointer;
  transition:all var(--transition-fast);
  position:relative;
  box-shadow:0 0 0 0 rgba(0,0,0,0);
  flex:0 0 auto;
}

.indicator-thumb img{
  width:100%;
  height:100%;
  object-fit:cover;          /* 正方形→丸 */
  display:block;
  transform:scale(1.02);     /* 端�白抜�防止 */
}

.indicator-thumb:hover{
  transform:translateY(-1px);
  border-color:var(--color-border-strong);
  box-shadow:var(--shadow-soft);
}

.indicator-thumb:focus-visible{
  outline:none;
  border-color:var(--color-accent-gold);
  box-shadow:0 0 0 3px rgba(201,169,97,0.25);
}

.indicator-thumb.active{
  border-color:var(--color-accent-gold);
  box-shadow:0 0 0 3px rgba(201,169,97,0.25);
}

.indicator-thumb.no-image{
  display:grid;
  place-items:center;
  color:var(--color-text-light);
  font-family:var(--font-serif-en);
  font-size:12px;
  letter-spacing:0.06em;
}

/* ãƒ??ルãƒ�ップ（ã?ãƒ�ã?/フォーカスã�§è¡¨ç¤º?? */
.indicator-thumb::after{
  content:attr(data-tooltip);
  position:absolute;
  left:50%;
  bottom:56px;
  transform:translateX(-50%) translateY(6px);
  background:rgba(44,36,32,0.92);
  color:var(--color-bg-elevated);
  font-family:var(--font-serif-jp);
  font-size:12px;
  letter-spacing:0.06em;
  padding:8px 10px;
  border-radius:10px;
  white-space:nowrap;
  opacity:0;
  pointer-events:none;
  transition:opacity var(--transition-fast), transform var(--transition-fast);
  box-shadow:var(--shadow-soft);
}

.indicator-thumb::before{
  content:"";
  position:absolute;
  left:50%;
  bottom:48px;
  transform:translateX(-50%) translateY(6px);
  width:10px;
  height:10px;
  background:rgba(44,36,32,0.92);
  rotate:45deg;
  opacity:0;
  pointer-events:none;
  transition:opacity var(--transition-fast), transform var(--transition-fast);
}

.indicator-thumb:hover::after,
.indicator-thumb:hover::before,
.indicator-thumb:focus-visible::after,
.indicator-thumb:focus-visible::before{
  opacity:1;
  transform:translateX(-50%) translateY(0);
}

/* スマã??šæ¨ªã‚¹ã‚¯ãƒ­ãƒ¼ãƒ«?ˆã‚¹ãƒ¯ã‚¤ãƒ—対応ï¼? */
@media (max-width: 768px){
  .carousel-indicators{
    justify-content:flex-start;
    flex-wrap:nowrap;
    overflow-x:auto;
    gap:10px;
    padding:0 10px 8px;
    scroll-snap-type:x mandatory;
    -webkit-overflow-scrolling:touch;
  }
  .indicator-thumb{
    width:42px;
    height:42px;
    scroll-snap-align:center;
  }
  /* スクロールãƒ�ã?を控ã�ˆã‚�ã�«?ˆå¯¾å¿œãƒ–ラウザã�®ã�¿?? */
  .carousel-indicators::-webkit-scrollbar{ height:6px; }
  .carousel-indicators::-webkit-scrollbar-thumb{
    background:rgba(108,93,84,0.25);
    border-radius:99px;
  }
}