/* =============================
   CSS Variables & Reset
============================= */
:root {
  --bg-primary:   #0d0d0d;
  --bg-secondary: #161616;
  --bg-card:      #1a1a1a;
  --text-primary: #f0f0f0;
  --text-muted:   #777777;
  --accent:       #e05390;
  --accent-hover: #c0306a;
  --border:       #2a2a2a;
  --max-width:    1200px;
  --header-h:     68px;
  --radius:       4px;
  --transition:   0.3s ease;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; }

body {
  font-family: 'DM Sans', 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', 'Meiryo', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
}

img { max-width: 100%; height: auto; display: block; }
a   { color: inherit; text-decoration: none; }
ul  { list-style: none; }
button { cursor: pointer; }

/* =============================
   Layout Helpers
============================= */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

section { padding: 96px 0; position: relative; z-index: 1; }
footer  { position: relative; z-index: 1; }

.section-title {
  font-family: 'Jost', sans-serif;
  font-size: clamp(6rem, 14vw, 14rem);
  font-weight: 300;
  text-align: left;
  margin-bottom: 15px;
  line-height: 1.0;
  color: var(--text-primary);
  text-shadow: 3px 3px 20px #000;
}

/* =============================
   Header
============================= */
header {
  position: fixed;
  inset: 0 0 auto 0;
  height: var(--header-h);
  background: rgba(13,13,13,0.96);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  z-index: 100;
  transition: box-shadow var(--transition);
}
header.scrolled {
  border-bottom-color: transparent;
  box-shadow: 0 2px 24px rgba(0,0,0,0.5);
}

header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo-wrap {
  display: flex;
  align-items: center;
  gap: 14px;
}

.logo { display: flex; align-items: center; }
.logo img { height: 36px; width: auto; display: block; }

.logo-tagline {
  font-size: 0.78rem;
  line-height: 1.2;
  color: var(--text-primary);
  border-left: 2px solid var(--accent);
  padding-left: 12px;
  white-space: nowrap;
}

nav ul { display: flex; gap: 36px; }
nav ul li a {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-muted);
  transition: color var(--transition);
  position: relative;
  padding-bottom: 4px;
}
nav ul li a::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0;
  width: 0; height: 2px;
  background: var(--accent);
  transition: width var(--transition);
}
nav ul li a:hover,
nav ul li a.active { color: var(--text-primary); }
nav ul li a:hover::after,
nav ul li a.active::after { width: 100%; }

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  padding: 6px;
}
.hamburger span {
  display: block;
  width: 22px; height: 2px;
  background: var(--text-primary);
  transition: all var(--transition);
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile Nav Overlay */
.nav-mobile {
  display: none;
  position: fixed;
  top: var(--header-h); left: 0; right: 0;
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border);
  z-index: 99;
  padding: 16px 24px;
}
.nav-mobile.open { display: block; }
.nav-mobile ul { display: flex; flex-direction: column; }
.nav-mobile ul li a {
  display: block;
  padding: 14px 0;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
  transition: color var(--transition);
}
.nav-mobile ul li:last-child a { border-bottom: none; }
.nav-mobile ul li a:hover { color: var(--accent); }

/* =============================
   Hero Slider
============================= */
.hero {
  position: relative;
  margin-top: var(--header-h);
  overflow: hidden;
}

.slider {
  position: relative;
  display: grid;
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
}

.slide {
  grid-area: 1 / 1;
  opacity: 0;
  transition: opacity 0.9s ease;
  pointer-events: none;
}
.slide.active { opacity: 1; pointer-events: auto; }

.slide img {
  width: 100%;
  height: auto;
  display: block;
}

/* Slider controls */
.slider-prev, .slider-next {
  position: absolute;
  top: 50%; transform: translateY(-50%);
  z-index: 10;
  width: 44px; height: 44px;
  background: rgba(0,0,0,0.55);
  border: 1px solid rgba(255,255,255,0.15);
  color: #f0f0f0;
  font-size: 1rem;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius);
  transition: background var(--transition), border-color var(--transition);
}
.slider-prev:hover, .slider-next:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
.slider-prev { left: 20px; }
.slider-next { right: 20px; }

.slider-dots {
  position: absolute;
  bottom: 22px; left: 50%;
  transform: translateX(-50%);
  display: flex; gap: 8px;
  z-index: 10;
}
.slider-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: rgba(255,255,255,0.55);
  border: none;
  transition: background var(--transition), width var(--transition), border-radius var(--transition);
}
.slider-dot.active {
  width: 26px;
  border-radius: 4px;
  background: var(--accent);
}

/* =============================
   About
============================= */
.about {}
.about-inner {
  max-width: 700px;
  margin: 0 auto;
  text-align: center;
}
.about-inner img { margin-bottom: 20px;}
.about-inner p { line-height: 2.1; font-size: 0.95rem; }
.about-inner p + p { margin-top: 16px; }
.about-inner ul { color: var(--accent); line-height: 2.5; text-align: left; width: fit-content; margin: 15px auto; }
.about-inner ul li span {
  font-size: 1.2em;
  font-weight: bold;
  font-style: italic;
  color: #e10000;
  padding: 0 .15em;
}
/* =============================
   News Cards
============================= */
.news {}

.news-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 40px;
}

.news-card {
  display: block;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.news-card:hover {
  transform: translateY(-5px);
  border-color: var(--accent);
  box-shadow: 0 12px 40px rgba(224,83,144,0.1);
}

.news-card-img {
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
}
.news-card-img img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.45s ease;
}
.news-card:hover .news-card-img img { transform: scale(1.06); }

.news-card-body { padding: 14px 16px; }
.news-card-date {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--accent);
  margin-bottom: 6px;
}
.news-card-title {
  font-size: 0.88rem;
  font-weight: 600;
  line-height: 1.55;
  color: var(--text-primary);
}

/* =============================
   Works Cards
============================= */
.works {}

.works-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 40px;
}

.work-card {
  display: block;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.work-card:hover {
  transform: translateY(-5px);
  border-color: var(--accent);
  box-shadow: 0 12px 40px rgba(224,83,144,0.1);
}

.work-card-thumb {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  overflow: hidden;
}
.work-card-thumb img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.45s ease;
}
.work-card:hover .work-card-thumb img { transform: scale(1.06); }

.work-card-new {
  position: absolute;
  top: 10px; left: 10px;
  background: var(--accent);
  color: #fff;
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  padding: 3px 8px;
  border-radius: 2px;
  text-transform: uppercase;
}

.work-card-body { padding: 12px 14px; }
.work-card-title {
  font-size: 0.88rem;
  font-weight: 600;
  line-height: 1.5;
  margin-bottom: 6px;
  color: var(--text-primary);
}
.work-card-desc {
  font-size: 0.78rem;
  color: var(--text-muted);
  line-height: 1.65;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.work-card-tags { display: flex; flex-wrap: wrap; gap: 4px; }
.tag {
  font-size: 0.68rem;
  padding: 2px 8px;
  border: 1px solid var(--border);
  color: var(--text-muted);
  border-radius: 2px;
}

/* =============================
   Shared Button
============================= */
.btn-more {
  display: block;
  width: fit-content;
  margin: 0 auto;
  padding: 12px 42px;
  border: 1.5px solid var(--accent);
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  border-radius: var(--radius);
  transition: background var(--transition), color var(--transition);
}
.btn-more:hover { background: var(--accent); color: #fff; }

/* =============================
   Ci-en Banner
============================= */
.cien-section {
  padding: 25px 0;
  text-align: center;
  border-top: 1px solid var(--border);
}
.cien-title {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: #999;
  margin-bottom: 12px;
}
.cien-link {
  display: inline-block;
  transition: opacity var(--transition);
}
.cien-link:hover { opacity: 0.65; }
.cien-link img { height: 40px; width: auto; margin: 0 auto; }

/* =============================
   Footer
============================= */
footer {
  border-top: 1px solid var(--border);
  padding: 44px 0 28px;
}
.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 22px;
  text-align: center;
}
.footer-logo img { height: 32px; width: auto; display: block; }

.footer-links { display: flex; align-items: center; gap: 16px; }

.footer-x {
  display: flex; align-items: center; justify-content: center;
  width: 40px; height: 40px;
  border: 1px solid var(--border);
  border-radius: 50%;
  background: var(--bg-card);
  transition: background var(--transition), border-color var(--transition);
}
.footer-x:hover { background: #fff; border-color: #fff; }
.footer-x:hover svg { fill: #111; }
.footer-x svg { width: 17px; height: 17px; fill: var(--text-primary); transition: fill var(--transition); }

.btn-contact {
  display: inline-block;
  padding: 10px 22px;
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  border-radius: var(--radius);
  transition: border-color var(--transition), color var(--transition);
}
.btn-contact:hover { border-color: var(--text-primary); color: var(--text-primary); }

.copyright { font-size: 0.72rem; color: var(--text-muted); letter-spacing: 0.06em; }

/* =============================
   Sub-page Hero Banner
============================= */
.page-banner {
  margin-top: var(--header-h);
  padding: 64px 0;
  background: rgba(22, 22, 22, 0.75);
  border-bottom: 1px solid var(--border);
  text-align: center;
}
.page-banner h1 {
  font-size: clamp(2.4rem, 5vw, 4rem);
  font-weight: 900;
  letter-spacing: -0.01em;
  text-transform: uppercase;
  margin-bottom: 8px;
  line-height: 1.05;
}
.page-banner p { font-size: 0.82rem; color: var(--text-muted); letter-spacing: 0.1em; }

/* Breadcrumb */
.breadcrumb {
  display: flex; align-items: center; gap: 8px;
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 36px;
}
.breadcrumb a { transition: color var(--transition); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb .sep { opacity: 0.4; }
.breadcrumb span:last-of-type {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* =============================
   News List / Works List
============================= */
.list-section { padding: 60px 0; }

.news-list-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.works-list-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

/* =============================
   Detail Page
============================= */
.detail-section { padding: 60px 0; }

/* Title block */
.detail-title-block { margin-bottom: 40px; }
.detail-new {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  padding: 3px 8px;
  border-radius: 2px;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.detail-title {
  font-size: clamp(1.4rem, 3vw, 2.2rem);
  font-weight: 900;
  line-height: 1.35;
  margin-bottom: 10px;
}
.detail-meta { font-size: 0.78rem; color: var(--text-muted); letter-spacing: 0.1em; }

/* Main layout: visual + info */
.detail-main {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 52px;
  align-items: start;
  margin-bottom: 64px;
}

.detail-visual {
  aspect-ratio: 4 / 3;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
}
.detail-visual img { width: 100%; height: 100%; object-fit: cover; }

.detail-info { display: flex; flex-direction: column; gap: 28px; }
.detail-desc { line-height: 2.1; font-size: 0.93rem; }

/* Buy Buttons */
.detail-buttons { display: flex; flex-direction: column; gap: 12px; }

.btn-store {
  display: flex; align-items: center; justify-content: center; gap: 10px;
  padding: 15px 24px;
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  transition: opacity var(--transition), transform var(--transition);
  border: none;
}
.btn-store:hover { opacity: 0.82; transform: translateY(-2px); }
.btn-store svg { width: 18px; height: 18px; fill: currentColor; flex-shrink: 0; }

.btn-dlsite { background: #e8521a; color: #fff; }
.btn-fanza  { background: #d60028; color: #fff; }

/* ---- Section sub-headings ---- */
.detail-sub-heading {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 28px;
}

/* Sample Audio */
.sample-audio-wrap { margin-bottom: 64px; }

.audio-player {
  position: relative;
  max-width: 300px;
  cursor: pointer;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  user-select: none;
  margin: 0 auto;
}
.audio-player img { width: 100%; aspect-ratio: 4/3; object-fit: cover; display: block; }

.audio-overlay {
  position: absolute;
  inset: 0;
  display: flex; align-items: center; justify-content: center;
  background: rgba(0,0,0,0.28);
  transition: background var(--transition);
}
.audio-player:hover .audio-overlay { background: rgba(0,0,0,0.46); }

.play-btn-circle {
  width: 66px; height: 66px;
  border-radius: 50%;
  background: var(--accent);
  display: flex; align-items: center; justify-content: center;
  transition: transform var(--transition), background var(--transition);
  box-shadow: 0 4px 20px rgba(224,83,144,0.4);
}
.audio-player:hover .play-btn-circle { transform: scale(1.08); }
.audio-player.playing .play-btn-circle { background: var(--accent-hover); }

.play-btn-circle .icon-play,
.play-btn-circle .icon-pause {
  width: 26px; height: 26px;
  fill: #fff;
}
.play-btn-circle .icon-pause { display: none; }
.audio-player.playing .icon-play  { display: none; }
.audio-player.playing .icon-pause { display: block; }

.audio-hint {
  margin-top: 10px;
  font-size: 0.75rem;
  color: var(--text-muted);
  text-align: center;
}

/* Work Introduction */
.work-intro-wrap { margin-bottom: 64px; }

.intro-item {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px;
  align-items: center;
  margin-bottom: 44px;
}
.intro-item:last-child { margin-bottom: 0; }
.intro-item.reverse { direction: rtl; }
.intro-item.reverse > * { direction: ltr; }

.intro-img {
  aspect-ratio: 4 / 3;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
}
.intro-img img { width: 100%; height: 100%; object-fit: cover; }

.intro-text h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 12px;
}
.intro-text p { line-height: 2.1; font-size: 0.9rem; }

/* Track List */
.track-list-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
  margin-bottom: 64px;
}

.track-list-aside {
  line-height: 2.1;
  font-size: 0.9rem;
}

.track-table { width: 100%; border-collapse: collapse; }
.track-table thead th {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
  padding: 10px 16px;
  border-bottom: 1px solid var(--border);
}
.track-table tbody td {
  padding: 13px 16px;
  font-size: 0.88rem;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
  transition: background var(--transition);
}
.track-table tbody tr:last-child td { border-bottom: none; }
.track-table tbody tr:hover td { background: var(--bg-secondary); }
.track-num  { width: 56px; font-weight: 700; color: var(--accent) !important; }
.track-name { color: var(--text-primary) !important; font-weight: 500; }
.track-time { width: 100px; text-align: right; font-variant-numeric: tabular-nums; }

/* Remarks */
.remarks-wrap { margin-bottom: 64px; }
.remarks-body {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 28px;
  color: var(--text-muted);
  line-height: 2.1;
  font-size: 0.9rem;
}

/* =============================
   Responsive
============================= */
@media (max-width: 1024px) {
  .news-grid  { grid-template-columns: repeat(2, 1fr); }
  .works-grid { grid-template-columns: repeat(2, 1fr); }
  .works-list-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 768px) {
  :root { --header-h: 60px; }
  section { padding: 56px 0; }

  nav { display: none; }
  .hamburger { display: flex; }
  .logo-tagline { display: none; }

  .news-grid  { grid-template-columns: repeat(2, 1fr); gap: 14px; }
  .works-grid { grid-template-columns: repeat(2, 1fr); gap: 14px; }
  .news-list-grid  { grid-template-columns: repeat(2, 1fr); }
  .works-list-grid { grid-template-columns: repeat(2, 1fr); gap: 14px; }

  .detail-main { grid-template-columns: 1fr; gap: 28px; }

  .intro-item        { grid-template-columns: 1fr; gap: 18px; }
  .intro-item.reverse { direction: ltr; }

  .track-list-section { grid-template-columns: 1fr; gap: 32px; }
}

@media (max-width: 480px) {
  .news-grid  { grid-template-columns: 1fr; }
  .works-grid { grid-template-columns: repeat(1, 1fr); }
  .news-list-grid  { grid-template-columns: 1fr; }
  .works-list-grid { grid-template-columns: repeat(2, 1fr); }
  .slider-prev, .slider-next { display: none; }
}

@media (min-width: 769px) {
  .intro-item { align-items: flex-start; }
  .intro-img { position: sticky; top: 100px; }
  .track-list-wrap { position: sticky; top: 100px; }
}

/* =============================
   Parallax Background
============================= */
.parallax-bg {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.parallax-item {
  position: absolute;
  will-change: transform;
  opacity: 0.75;
  filter: blur(1px);
}

.parallax-item:nth-child(1) {
  width: 25vw;
  min-width: 220px;
  top: 10%;
  left: -10%;
}
.parallax-item:nth-child(2) {
  width: 35vw;
  min-width: 300px;
  top: 20%;
  right: 10%;
}
.parallax-item:nth-child(3) {
  width: 35vw;
  min-width: 250px;
  top: 95%;
  left: 10%;
}
.parallax-item:nth-child(4) {
  width: 20vw;
  min-width: 200px;
  top: 60%;
  right: 0;
}
.parallax-item:nth-child(5) {
  width: 35vw;
  min-width: 250px;
  top: 125%;
  right: 15%;
}

/* =============================
   Age Verification Modal
============================= */
.age-modal {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.35);
  backdrop-filter: blur(6px);
  padding: 24px;
}
.age-modal.hidden { display: none; }

.age-modal-box {
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-top: 3px solid var(--accent);
  border-radius: var(--radius);
  padding: 48px 40px;
  max-width: 460px;
  width: 100%;
  text-align: center;
  box-shadow: 0 24px 64px rgba(0,0,0,0.12);
}

.age-modal-logo {
  margin-bottom: 24px;
  text-align: center;
}
.age-modal-logo img {
  display: block;
  height: 48px;
  width: auto;
  object-fit: contain;
  margin: 0 auto;
}

.age-modal-site-name { font-size: 0.82rem; margin-bottom: 20px; }

.age-modal-label {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.28em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 12px;
}

.age-modal-title {
  font-size: clamp(1.4rem, 4vw, 1.9rem);
  font-weight: 900;
  letter-spacing: 0.12em;
  margin-bottom: 24px;
}

.age-modal-text {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.9;
  margin-bottom: 32px;
}

.age-modal-buttons {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 24px;
}

.age-btn {
  display: block;
  width: 100%;
  padding: 14px 24px;
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  border-radius: var(--radius);
  border: none;
  transition: opacity var(--transition), transform var(--transition);
}
.age-btn:hover { opacity: 0.82; transform: translateY(-2px); }

.age-btn-yes { background: var(--accent); color: #fff; }

.age-btn-no {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
}
.age-btn-no:hover { border-color: var(--text-muted); }

.age-modal-note {
  font-size: 0.72rem;
  color: var(--text-muted);
  opacity: 0.6;
}

@media (max-width: 480px) {
  .age-modal-box { padding: 36px 24px; }
}