/* Layout: shell, header, sidebar, page grids, section structure */
.pc-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 500;
  height: var(--header-height);
  background: rgba(8, 9, 16, 0.75);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  box-shadow: 0 1px 0 rgba(183, 99, 255, 0.15);
  transform: translateY(0);
  transition: transform 0.35s ease, background 0.35s ease, backdrop-filter 0.35s ease, border-color 0.35s ease;
}
.pc-header.scrolled {
  background: rgba(8, 10, 18, 0.9);
  backdrop-filter: blur(18px);
}
.pc-header.is-hidden { transform: translateY(calc(-100% - 8px)); }
.header-hover-zone {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 18px;
  z-index: 505;
  background: transparent;
}
.pc-header-inner {
  max-width: var(--content-width);
  height: 100%;
  margin: 0 auto;
  padding: 0 26px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}
.pc-header-logo { height: 34px; width: auto; filter: drop-shadow(0 0 12px rgba(183, 99, 255, 0.18)); }
.site-logo-link { flex: 0 0 auto; }
.pc-nav {
  display: flex;
  align-items: center;
  gap: 24px;
  justify-content: flex-end;
  flex-wrap: wrap;
}
.pc-nav a,
.footer-links a,
.sidebar-nav a {
  position: relative;
  text-decoration: none;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.18em;
  transition: opacity 0.25s ease;
}
.pc-nav a::after,
.footer-links a::after,
.sidebar-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -7px;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, var(--purple), var(--blue));
  transform: scaleX(1);
  transform-origin: center;
  transition: transform 0.25s ease, opacity 0.25s ease;
}
.pc-nav a:hover::after,
.footer-links a:hover::after,
.sidebar-nav a:hover::after { transform: scaleX(0); opacity: 0; }
.pc-nav a:hover,
.footer-links a:hover,
.sidebar-nav a:hover { opacity: 0.82; }

.menu-button {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 520;
  width: 46px;
  height: 46px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 14px;
  display: none;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: rgba(10, 12, 20, 0.72);
  backdrop-filter: blur(12px);
}
.menu-button span { width: 20px; height: 2px; background: #fff; border-radius: 999px; }
.sidebar-overlay {
  position: fixed;
  inset: 0;
  z-index: 490;
  background: rgba(0, 0, 0, 0.5);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s ease, visibility 0.25s ease;
}
.sidebar-overlay.show { opacity: 1; visibility: visible; }
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: min(85vw, var(--sidebar-width));
  z-index: 510;
  transform: translateX(-100%);
  transition: transform 0.3s ease;
  padding: 86px 22px 24px;
  background: rgba(8, 10, 18, 0.96);
  backdrop-filter: blur(16px);
  border-right: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.sidebar.open { transform: translateX(0); }
.sidebar-logo { width: 132px; }
.sidebar-nav { display: grid; gap: 18px; }
.sidebar-copy { margin-top: auto; color: rgba(255,255,255,0.55); font-size: 12px; letter-spacing: 0.14em; }

.shell-main { padding-top: calc(var(--header-height) + 2px); }
.page-frame {
  display: block;
  width: var(--frame-width);
  min-height: calc(100vh - var(--header-height));
  margin: 0 auto;
  border: 0;
  background: transparent;
  overflow: hidden;
}
.site-footer {
  width: var(--frame-width);
  margin: 24px auto 120px;
  padding: 22px 24px;
  border: 1px solid var(--line);
  background: rgba(8, 10, 18, 0.46);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(14px);
  box-shadow: var(--shadow);
}
.site-footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.footer-brand { margin: 0 0 6px; font-weight: 700; letter-spacing: 0.15em; }
.footer-copy { margin: 0; color: rgba(255,255,255,0.56); font-size: 12px; }
.footer-links { display: flex; gap: 18px; flex-wrap: wrap; justify-content: flex-end; }

.section { margin-bottom: 34px; }
.feature-panel,
.hero-slide,
.platform-card,
.link-row,
.discography-card,
.news-card,
.goods-preview-card,
.content-image-card {
  background: var(--panel);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
}
.feature-panel,
.hero-slide,
.content-image-card,
.goods-preview-card,
.news-card { border-radius: var(--radius-lg); }
.section-head {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  margin: 0 0 20px;
}
.section-head.section-head-left { justify-content: flex-start; }
.section-head .line {
  height: 2px;
  flex: 1;
  max-width: 220px;
  background: linear-gradient(90deg, transparent, rgba(215, 139, 255, 0.68), transparent);
}
.section-head h2,
.page-title,
.discography-info h3,
.discography-more-btn,
.section-view-btn,
.hero-copy-title {
  font-family: "Times New Roman", Georgia, serif;
}
.section-head h2,
.page-title { margin: 0; font-size: clamp(28px, 4vw, 58px); line-height: 1; }
.section-head p,
.page-lead { margin: 8px 0 0; font-size: clamp(14px, 1.6vw, 18px); color: var(--muted-soft); }
.page-kicker,
.hero-kicker,
.discography-type,
.player-now,
.player-dock-now {
  margin: 0 0 10px;
  color: #d9b4ff;
  font-size: 11px;
  letter-spacing: 0.24em;
}
.page-hero {
  padding: 56px 28px 20px;
  text-align: center;
}
.sub-page .page-hero { padding-top: 26px; }
.page-title.solo { font-size: clamp(38px, 6vw, 74px); }
.page-lead { max-width: 800px; margin-left: auto; margin-right: auto; }

.top-hero {
  margin-bottom: 26px;
}
.hero-slider {
  position: relative;
  overflow: hidden;
  border-radius: 26px;
  border: 1px solid rgba(255,255,255,0.08);
  box-shadow: var(--shadow);
}
.hero-slide {
  position: relative;
  min-height: min(68vh, 760px);
  display: none;
  overflow: hidden;
}
.hero-slide.is-active { display: grid; }
.hero-slide-image {
  position: absolute;
  inset: 0;
}
.hero-slide-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.hero-slide-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(5,8,20,0.18), rgba(4,6,16,0.42) 40%, rgba(4,6,16,0.82));
}
.hero-slide-content {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  padding: clamp(24px, 5vw, 54px);
}
.hero-copy {
  max-width: 560px;
}
.hero-copy-title {
  margin: 0;
  font-size: clamp(48px, 9vw, 94px);
  line-height: 0.9;
}
.hero-copy-text {
  margin: 14px 0 0;
  max-width: 480px;
  font-size: clamp(14px, 1.7vw, 18px);
  line-height: 1.8;
  color: rgba(255,255,255,0.82);
}
.hero-slide-logo {
  width: min(44vw, 400px);
  opacity: 0.96;
  filter: drop-shadow(0 0 22px rgba(183,99,255,0.28));
}
.hero-nav {
  position: absolute;
  inset: 50% 16px auto 16px;
  transform: translateY(-50%);
  display: flex;
  justify-content: space-between;
  pointer-events: none;
}
.hero-arrow {
  width: 54px;
  height: 54px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.18);
  background: rgba(4,6,16,0.4);
  color: #fff;
  font-size: 28px;
  cursor: pointer;
  pointer-events: auto;
  display: grid;
  place-items: center;
}
.hero-dots {
  position: absolute;
  left: 50%;
  bottom: 18px;
  transform: translateX(-50%);
  display: flex;
  gap: 10px;
  z-index: 2;
}
.hero-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.28);
  background: rgba(255,255,255,0.15);
  cursor: pointer;
}
.hero-dot.is-active { background: linear-gradient(135deg, var(--purple), var(--blue)); }

.top-grid-two {
  display: grid;
  grid-template-columns: repeat(2, minmax(0,1fr));
  gap: 22px;
  margin-bottom: 24px;
}
.top-grid-single { margin-bottom: 24px; }
.top-grid-single .top-section-block { width: 100%; }
.feature-panel {
  padding: 24px;
  transition: transform 0.22s ease, border-color 0.22s ease, box-shadow 0.22s ease, background 0.22s ease;
}
.feature-panel:hover,
.platform-card:hover,
.link-row:hover,
.discography-card:hover,
.news-card:hover,
.goods-preview-card:hover,
.hero-arrow:hover {
  transform: translateY(-3px);
  border-color: rgba(183, 99, 255, 0.5);
  box-shadow: 0 18px 44px rgba(116, 80, 220, 0.18);
}
.section-view-btn:hover,
.discography-more-btn:hover {
  transform: translateY(-2px);
  border-color: rgba(183, 99, 255, 0.44);
  box-shadow: 0 8px 16px rgba(116, 80, 220, 0.12);
}
.feature-panel:hover { background: rgba(12, 14, 25, 0.72); }
.lead-copy,
.content-copy { line-height: 1.9; color: rgba(255,255,255,0.8); }
.section-view-btn,
.discography-more-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 28px;
  border-radius: 999px;
  text-decoration: none;
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.18em;
  border: 1px solid rgba(255,255,255,0.14);
  background: linear-gradient(135deg, rgba(183, 99, 255, 0.18), rgba(84, 169, 255, 0.12));
  backdrop-filter: blur(14px);
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.12);
}
.section-view-btn { margin-top: 20px; }

.section-head.section-head-balanced {
  gap: 14px;
}
.section-head.section-head-balanced > div {
  flex: 0 0 auto;
}
.section-head.section-head-balanced .line {
  max-width: 120px;
}
.top-section-block {
  display: grid;
  gap: 12px;
  align-content: start;
}
.section-head-outside {
  margin-bottom: 0;
  padding: 0 6px;
}
.top-unified-card {
  min-height: 100%;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.top-section-block > .section-head {
  justify-content: center;
  text-align: center;
}
.top-section-block > .section-head > div {
  text-align: center;
}
.card-center-layout {
  justify-content: space-between;
}
.card-content-center {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.top-grid-two-primary .card-content-center,
.goods-links-row .card-content-center,
.listen-compact-card .card-content-center {
  min-height: 0;
}
.news-list-top-only {
  justify-content: center;
}
.discography-action {
  display: flex;
  justify-content: flex-start;
  margin-top: 18px;
}