.os-top-hero__inner--split{text-align:left;max-width:1100px;display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;}
.os-top-hero__btns--left{justify-content:flex-start;}
.os-top-hero__bizlink{margin-top:18px;font-size:13.5px;color:var(--os-text);}
.os-top-link-rose{color:var(--os-rose);font-weight:700;border-bottom:1px solid rgba(168,93,117,0.45);padding-bottom:1px;}
.os-top-eyebrow{text-align:center;font-family:'DM Sans',sans-serif;font-size:12px;font-weight:700;letter-spacing:0.2em;color:var(--os-pink);margin-bottom:20px;}
.os-wave-divider{margin-top:-2px;line-height:0;background:#fff;}
.os-wave-divider svg{width:100%;height:60px;display:block;}
.os-section--pink-pale{background:var(--os-pink-pale);}
.os-section--pink-pale-layer{background:var(--os-pink-pale);position:relative;z-index:1;}
.os-section--charcoal{background:var(--os-charcoal);color:#fff;}
.os-layer{position:relative;z-index:1;}
.os-text-center{text-align:center;}
.os-premium-badge{display:inline-block;font-size:10px;font-weight:700;color:#fff;background:var(--os-rose);border-radius:4px;padding:1px 6px;letter-spacing:.04em;vertical-align:middle;}
.os-top-sh__label--pink{color:var(--os-pink);}
.os-top-sh__title--white{color:#fff;}
.os-top-sh__sub--white{color:rgba(255,255,255,0.65);}
.os-listen-grid--center{max-width:1080px;margin:0 auto;}
.os-listen-embed{padding:0 22px 20px;}
.os-soundcloud-frame{display:block;border-radius:6px;}
.os-mt-32{margin-top:32px;}
.os-mt-28{margin-top:28px;}
.os-mt-20{text-align:center;margin-top:20px;}
.os-mb-30{margin-bottom:30px;}
.os-mb-36{margin-bottom:36px;}
.os-plans-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;max-width:980px;margin:0 auto;align-items:stretch;}
.os-grid-3-960{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;max-width:960px;margin:0 auto;}
.os-grid-3-1020{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;max-width:1020px;margin:0 auto;align-items:start;}
.os-btn-full{width:100%;}
.os-btn-standard-featured{width:100%;background:#fff;color:var(--os-charcoal);}
.os-tier-label{display:inline-block;font-size:10px;font-weight:700;letter-spacing:.06em;color:var(--os-rose);background:#faf3f5;border:1px solid rgba(212,114,143,.3);border-radius:999px;padding:3px 11px;margin:6px 0 0;}
.os-tier-label--light{color:#fff;background:rgba(255,255,255,.18);border-color:rgba(255,255,255,.4);}
.os-top-other{background:var(--os-cream);padding:8px 0 40px;}
.os-top-other__head{max-width:900px;margin:0 auto 18px;text-align:center;}
.os-top-other__title{font-size:22px;}
.os-banner-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;max-width:900px;}
/* バナーカード（os-banner-card / -title / -text / -ic）は #onesong-top スコープに集約。
   末尾「Other Options バナーカード」ブロックを参照。 */
.os-note-card{background:#fff;border-radius:16px;overflow:hidden;text-decoration:none;color:inherit;border:1px solid rgba(232,164,184,0.18);box-shadow:0 8px 24px rgba(61,47,63,0.05);transition:all 0.3s;display:block;}
.os-note-card__media{aspect-ratio:16/9;overflow:hidden;background:linear-gradient(135deg,var(--os-pink-light),var(--os-pink-pale));position:relative;}
.os-note-card__img{width:100%;height:100%;object-fit:cover;display:block;}
.os-note-card__fallback{width:100%;height:100%;align-items:center;justify-content:center;font-family:'Cormorant Garamond',serif;font-size:32px;color:var(--os-pink-mid);}
.os-note-card__fallback--hidden{display:none;}
.os-note-card__fallback--visible{display:flex;}
.os-note-card__body{padding:20px 24px 24px;}
.os-note-card__date{font-family:'DM Sans',sans-serif;font-size:12px;color:var(--os-pink-dark);font-weight:600;letter-spacing:0.1em;margin:0 0 8px;}
.os-note-card__title{font-family:'DM Sans','Noto Sans JP',sans-serif;font-size:16px;font-weight:700;color:var(--os-charcoal);line-height:1.5;margin:0 0 8px;}
.os-note-card__desc{font-size:13px;line-height:1.8;color:var(--os-text-light);margin:0;}
.os-embed-cell{min-width:0;overflow:hidden;}
.os-embed-card{background:#FFF;border:0;border-radius:12px;box-shadow:0 4px 16px rgba(0,0,0,0.06);margin:0;padding:0;width:100%;max-width:100%;}
.os-follow-btn{margin-right:12px;}
.os-flex-center{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;}
@media(max-width:860px){
  .os-top-hero__inner--split,.os-plans-grid,.os-grid-3-960,.os-grid-3-1020{grid-template-columns:1fr;}
  .os-banner-grid{grid-template-columns:1fr;}
}

/* reboot カード専用カラー（onesong パレット外のアクセント緑） */
#onesong-top {
  --os-reboot-bg: #2d5a50;
  --os-reboot-border: #4a7c6f;
  --os-reboot-border-hover: #6fa596;
}

.os-top-hero {
  background:
    radial-gradient(ellipse 70% 60% at 20% 50%, rgba(212,114,143,0.25), transparent),
    radial-gradient(ellipse 50% 50% at 80% 30%, rgba(168,93,117,0.15), transparent),
    linear-gradient(170deg, #f8dde2 0%, #fef0f0 35%, var(--os-cream) 80%);
  color: var(--os-charcoal);
  padding: 140px 0 100px;
  position: relative;
  overflow: hidden;
  text-align: center;
}
.os-top-hero::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0; right: 0;
  height: 80px;
  background: linear-gradient(to top, var(--os-cream), transparent);
  pointer-events: none;
}

.os-top-hero__deco {
  position: absolute; inset: 0; pointer-events: none; z-index: 0;
}
.os-top-hero__deco span {
  position: absolute;
  border-radius: 50%;
  opacity: 0.12;
}
.os-top-hero__deco span:nth-child(1) {
  width: 400px; height: 400px;
  background: var(--os-pink);
  top: -120px; right: -80px;
  animation: osDrift 20s ease-in-out infinite;
}
.os-top-hero__deco span:nth-child(2) {
  width: 250px; height: 250px;
  background: var(--os-pink-mid);
  bottom: -60px; left: -40px;
  animation: osDrift 24s ease-in-out infinite reverse;
}
.os-top-hero__deco span:nth-child(3) {
  width: 120px; height: 120px;
  background: var(--os-rose);
  top: 30%; left: 8%;
  animation: osDrift 16s ease-in-out infinite;
  animation-delay: -5s;
}
.os-top-hero__deco span:nth-child(4) {
  width: 180px; height: 180px;
  background: var(--os-pink-light);
  top: 20%; right: 12%;
  animation: osDrift 22s ease-in-out infinite;
  animation-delay: -8s;
}

.os-top-hero__notes {
  position: absolute; inset: 0; pointer-events: none; z-index: 0;
  font-size: 48px; color: var(--os-pink-mid); opacity: 0.08;
}
.os-top-hero__notes span {
  position: absolute;
  animation: osFloat 6s ease-in-out infinite;
}
.os-top-hero__notes span:nth-child(1) { top: 15%; left: 10%; font-size: 64px; animation-delay: 0s; }
.os-top-hero__notes span:nth-child(2) { top: 60%; right: 8%; font-size: 40px; animation-delay: -2s; }
.os-top-hero__notes span:nth-child(3) { bottom: 20%; left: 20%; font-size: 52px; animation-delay: -4s; }
.os-top-hero__notes span:nth-child(4) { top: 25%; right: 22%; font-size: 36px; animation-delay: -1s; }

.os-top-hero__inner { position: relative; z-index: 1; max-width: 800px; margin: 0 auto; padding: 0 24px; }
.os-top-hero__kicker {
  font-family: 'DM Sans', sans-serif;
  font-size: 13px; font-weight: 700;
  letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--os-rose); margin-bottom: 24px;
}
.os-top-hero__title {
  font-family: 'DM Sans', 'Noto Sans JP', sans-serif;
  font-size: clamp(32px, 6vw, 56px);
  font-weight: 700; line-height: 1.35;
  letter-spacing: -0.01em;
  margin: 0 0 24px; color: var(--os-charcoal);
  word-break: keep-all;
}
.os-top-hero__title em {
  font-style: normal;
  color: var(--os-rose);
}
.os-top-hero__lead {
  font-family: 'Noto Sans JP', sans-serif;
  font-size: clamp(15px, 2.5vw, 18px);
  line-height: 2.0; color: var(--os-text);
  margin: 0 0 40px; font-weight: 400;
}
.os-top-hero__btns { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* ヒーロー入場演出：オープニング演出のカーテンが上がるのに合わせて順次登場 */
@keyframes osTopHeroIn {
  0% { opacity: 0; transform: translateY(18px); }
  100% { opacity: 1; transform: translateY(0); }
}
.os-top-hero__kicker { animation: osTopHeroIn 1.2s var(--os-ease) 1.95s both; }
.os-top-hero__title  { animation: osTopHeroIn 1.3s var(--os-ease) 2.10s both; }
.os-top-hero__lead   { animation: osTopHeroIn 1.2s var(--os-ease) 2.35s both; }
.os-top-hero__btns--left { animation: osTopHeroIn 1.2s var(--os-ease) 2.55s both; }
.os-top-hero__bizlink    { animation: osTopHeroIn 1.2s var(--os-ease) 2.70s both; }
.os-top-hero__photo  { animation: osHeroImage 1.6s var(--os-ease) 1.95s both; }
@media (prefers-reduced-motion: reduce) {
  .os-top-hero__kicker, .os-top-hero__title, .os-top-hero__lead,
  .os-top-hero__btns--left, .os-top-hero__bizlink, .os-top-hero__photo { animation: none !important; }
}
/* 演出スキップ時（セッション2回目以降）は即表示 */
.os-intro-skip .os-top-hero__kicker, .os-intro-skip .os-top-hero__title,
.os-intro-skip .os-top-hero__lead, .os-intro-skip .os-top-hero__btns--left,
.os-intro-skip .os-top-hero__bizlink, .os-intro-skip .os-top-hero__photo { animation: none !important; }

/* === 開いた後のページを少し動的に：主要グリッドのカードをひとつずつカスケード表示 === */
/* 親リビールはスライドさせず、子カードが順に立ち上がる */
.os-stats__grid.os-reveal,
.os-flow3.os-reveal,
.os-plans-grid.os-reveal,
.os-listen-grid--3.os-reveal { transform: none; }

.os-stats__grid.os-reveal > .os-stats__item,
.os-flow3.os-reveal > .os-flow3__step,
.os-plans-grid.os-reveal > .os-plan-card,
.os-listen-grid--3.os-reveal > .os-listen-card {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s var(--os-ease), transform 0.7s var(--os-ease);
}
.os-stats__grid.os-reveal.is-visible > .os-stats__item,
.os-flow3.os-reveal.is-visible > .os-flow3__step,
.os-plans-grid.os-reveal.is-visible > .os-plan-card,
.os-listen-grid--3.os-reveal.is-visible > .os-listen-card {
  opacity: 1;
  transform: none;
}
.os-stats__grid.os-reveal.is-visible > :nth-child(2),
.os-flow3.os-reveal.is-visible > :nth-child(2),
.os-plans-grid.os-reveal.is-visible > :nth-child(2),
.os-listen-grid--3.os-reveal.is-visible > :nth-child(2) { transition-delay: 0.1s; }
.os-stats__grid.os-reveal.is-visible > :nth-child(3),
.os-flow3.os-reveal.is-visible > :nth-child(3),
.os-plans-grid.os-reveal.is-visible > :nth-child(3),
.os-listen-grid--3.os-reveal.is-visible > :nth-child(3) { transition-delay: 0.2s; }
.os-stats__grid.os-reveal.is-visible > :nth-child(4),
.os-flow3.os-reveal.is-visible > :nth-child(4) { transition-delay: 0.3s; }

@media (prefers-reduced-motion: reduce) {
  .os-stats__grid.os-reveal > .os-stats__item,
  .os-flow3.os-reveal > .os-flow3__step,
  .os-plans-grid.os-reveal > .os-plan-card,
  .os-listen-grid--3.os-reveal > .os-listen-card { opacity: 1; transform: none; transition: none; }
}


.os-top-hero__photo {
  position: relative;
  border-radius: 24px;
  overflow: hidden;
  aspect-ratio: 4/5;
  background: linear-gradient(135deg, var(--os-pink-light), var(--os-pink-pale));
  box-shadow: 0 24px 60px rgba(142,67,96,0.15), 0 8px 20px rgba(0,0,0,0.06);
  z-index: 1;
}
.os-top-hero__photo img {
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
}
.os-top-hero__photo--fallback {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: var(--os-text-light);
}
.os-top-hero__photo--fallback::after {
  content: '対話の風景';
  position: absolute;
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 13px;
  color: var(--os-text-light);
  opacity: 0.5;
}


.onesong .os-top-sh__label {
  font-family: 'DM Sans', sans-serif;
  font-size: 12px; font-weight: 700;
  letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--os-pink-dark); margin-bottom: 12px;
}
.onesong .os-top-sh__title {
  font-family: 'DM Sans', 'Noto Sans JP', sans-serif;
  font-size: clamp(24px, 4vw, 38px);
  font-weight: 700; line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--os-charcoal); margin: 0;
}
.onesong .os-top-sh__divider {
  width: 40px; height: 3px;
  background: var(--os-pink-mid);
  margin: 16px auto 0;
  border-radius: 2px;
}
.onesong .os-top-sh__sub {
  font-size: 16px; color: var(--os-text-light);
  margin-top: 16px; line-height: 1.9; font-weight: 400;
}


.os-seg { padding: 80px 0; background: #fff; }
/* .os-seg__card の定義は #onesong-top スコープに一本化（後方の === セグメントカード === 参照）。 */
@media (max-width: 768px) {
  .os-top-hero { padding: 100px 0 80px; }
  .os-top-hero__inner { grid-template-columns: 1fr !important; text-align: center !important; }
  .os-top-hero__btns { justify-content: center !important; }
  .os-top-hero__photo { max-width: 320px; margin: 0 auto; aspect-ratio: 3/4; }
}
@media (max-width: 640px) {

  #onesong-top section [style*="grid-template-columns:repeat(3"] {
    grid-template-columns: 1fr !important;
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
  }

  #onesong-top .os-banner-grid {
    grid-template-columns: 1fr !important;
    max-width: 420px;
    margin-left: auto;
    margin-right: auto;
  }
}




#onesong-top .os-listen-card__label {
  font-size: 13px;
  font-weight: 700;
  color: var(--os-pink-dark);
}
#onesong-top .os-listen-card__title {
  font-family: 'DM Sans', 'Noto Sans JP', sans-serif;
  font-size: 20px;
  font-weight: 700;
  color: var(--os-charcoal);
}
#onesong-top .os-listen-card__text {
  font-size: 14px;
  color: var(--os-text);
}


#onesong-top .os-plan-card__name {
  font-size: 14px;
  font-weight: 700;
  color: var(--os-pink-dark);
  letter-spacing: 0.15em;
}
#onesong-top .os-plan-card__title {
  font-family: 'DM Sans', 'Noto Sans JP', sans-serif;
  font-size: 24px;
  font-weight: 700;
}
#onesong-top .os-plan-card__desc {
  font-size: 15px;
  line-height: 1.8;
  color: var(--os-text);
  opacity: 1;
}
#onesong-top .os-plan-card--featured .os-plan-card__desc {
  color: rgba(255,255,255,0.8);
}
#onesong-top .os-plan-card--featured .os-plan-card__name {
  color: rgba(255,255,255,0.78);
}
#onesong-top .os-plan-card--featured .os-plan-card__title { color: #fff; }


#onesong-top .os-note {
  font-size: 14px;
  opacity: 0.85;
}
#onesong-top .os-note small {
  font-size: 14px;
}
#onesong-top .os-btn {
  font-size: 16px;
  padding: 16px 28px;
}
#onesong-top .os-btn--large {
  font-size: 17px;
  padding: 18px 36px;
}


#onesong-top .os-top-sh__sub {
  font-size: 17px;
  color: var(--os-text);
}


#onesong-top .os-cta-row .os-btn-ghost {
  font-size: 15px;
}


#onesong-top .os-seg__card h3 {
  font-size: 17px;
}
#onesong-top .os-seg__card p {
  font-size: 14px;
}


#onesong-top #listen .os-listen-card {
  background: rgba(255,255,255,0.06);
  border-color: rgba(255,255,255,0.1);
}
#onesong-top #listen .os-listen-card:hover {
  background: rgba(255,255,255,0.1);
  border-color: var(--os-pink-mid);
}
#onesong-top #listen .os-listen-card__visual {
  background: rgba(255,255,255,0.05);
}
#onesong-top #listen .os-listen-card__label {
  color: var(--os-pink);
}
#onesong-top #listen .os-listen-card__title {
  color: #fff;
}
#onesong-top #listen .os-listen-card__text {
  color: rgba(255,255,255,0.65);
}
#onesong-top #listen .os-top-sh__title{color:#fff!important}
#onesong-top #listen .os-top-sh__sub{color:rgba(255,255,255,.72)!important}
#onesong-top .os-proof-first{padding-top:82px}
#onesong-top .os-proof-business{display:grid;grid-template-columns:280px 1fr;max-width:900px;margin:46px auto 0;background:linear-gradient(135deg,#fff,#fdf4f6);border:1px solid rgba(142,67,96,.14);border-radius:24px;overflow:hidden;box-shadow:0 18px 42px rgba(61,47,63,.09)}
#onesong-top .os-proof-business__photo{width:100%;height:100%;min-height:310px;object-fit:cover}
#onesong-top .os-proof-business__body{padding:32px 38px;display:flex;flex-direction:column;justify-content:center;align-items:flex-start}
#onesong-top .os-proof-business__label{margin:0 0 12px;color:var(--os-rose);font-size:12px;font-weight:700;letter-spacing:.12em}
#onesong-top .os-proof-business__logo{width:180px;height:auto;margin-bottom:14px}
#onesong-top .os-proof-business h3{margin:0 0 10px;font-size:25px;line-height:1.5;color:var(--os-charcoal)}
#onesong-top .os-proof-business p:not(.os-proof-business__label){margin:0 0 20px;font-size:14px;line-height:1.8;color:var(--os-text)}
#onesong-top .os-proof-actions{display:flex;justify-content:center;gap:12px;margin:30px 0 68px;flex-wrap:wrap}
#onesong-top .os-proof-social-head{text-align:center;margin-bottom:24px}
#onesong-top .os-proof-social-head h3{margin:4px 0 0;font-size:24px;color:var(--os-charcoal)}
@media(max-width:860px){#onesong-top .os-proof-business{grid-template-columns:1fr;max-width:520px}#onesong-top .os-proof-business__photo{height:300px;min-height:0}#onesong-top .os-proof-business__body{padding:26px 24px}#onesong-top .os-social-strip{display:flex;overflow-x:auto;scroll-snap-type:x mandatory;gap:14px;max-width:none;padding:0 18px 14px;margin:0 -18px}#onesong-top .os-social-strip .os-embed-cell{flex:0 0:min(82vw,360px);scroll-snap-align:start}}
#onesong-top #listen .os-btn-ghost {
  color: #fff;
  border-color: rgba(255,255,255,0.3);
}
#onesong-top #listen .os-btn-ghost:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.5);
}


@media (max-width: 640px) {
  #onesong-top .os-listen-card__title { font-size: 18px; }
  #onesong-top .os-plan-card__title { font-size: 20px; }
}


.os-stats {
  background: var(--os-charcoal);
  padding: 40px 0;
  position: relative;
  overflow: hidden;
}
.os-stats__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  max-width: 900px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}
.os-stats__item { text-align: center; }
.os-stats__num {
  font-family: 'DM Sans', sans-serif;
  font-size: 42px;
  font-weight: 700;
  color: var(--os-pink);
  line-height: 1;
  letter-spacing: -0.02em;
}
.os-stats__num small { font-size: 20px; font-weight: 600; }
.os-stats__label {
  font-size: 13px;
  color: rgba(255,255,255,0.65);
  margin-top: 8px;
  font-weight: 400;
}
@media (max-width: 640px) {
  .os-stats__grid { grid-template-columns: repeat(2, 1fr); gap: 28px; }
  .os-stats__num { font-size: 34px; }
}


.os-aiq {
  background: linear-gradient(165deg, var(--os-roseDeep, #6e2d47) 0%, #4a2a3d 60%, var(--os-charcoal) 100%);
  background: linear-gradient(165deg, #6e2d47 0%, #4a2a3d 60%, #3d2f3f 100%);
  padding: 90px 0;
  position: relative;
  overflow: hidden;
}
.os-aiq::before {
  content: '"';
  position: absolute;
  top: -20px; left: 40px;
  font-family: 'Cormorant Garamond', serif;
  font-size: 280px;
  color: rgba(232,164,184,0.08);
  line-height: 1;
}
.os-aiq__inner { max-width: 820px; margin: 0 auto; padding: 0 24px; position: relative; z-index: 1; }
.os-aiq__q {
  font-family: 'DM Sans', 'Noto Sans JP', sans-serif;
  font-size: clamp(22px, 3.5vw, 30px);
  font-weight: 700;
  color: #fff;
  line-height: 1.6;
  text-align: center;
  margin-bottom: 16px;
  word-break: keep-all;
}
.os-aiq__q em { font-style: normal; color: var(--os-pink); }
.os-aiq__divider {
  width: 50px; height: 3px;
  background: var(--os-pink-mid);
  margin: 28px auto;
  border-radius: 2px;
}
.os-aiq__a {
  font-size: clamp(15px, 2vw, 17px);
  line-height: 2.1;
  color: rgba(255,255,255,0.8);
  text-align: center;
}
.os-aiq__a strong { color: #fff; font-weight: 600; }
.os-aiq__points {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 40px;
}
.os-aiq__point {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 14px;
  padding: 24px 18px;
  text-align: center;
}
.os-aiq__point-icon { font-size: 28px; margin-bottom: 10px; }
.os-aiq__point-title {
  font-family: 'DM Sans', 'Noto Sans JP', sans-serif;
  font-size: 15px; font-weight: 700;
  color: var(--os-pink-light);
  margin-bottom: 6px;
}
.os-aiq__point-text {
  font-size: 12px;
  color: rgba(255,255,255,0.6);
  line-height: 1.7;
}
@media (max-width: 640px) {
  .os-aiq__points { grid-template-columns: 1fr; }
}


#onesong-top {
  --s-gold: #c4a265;
  --s-gold-soft: #d9bd86;
}


#onesong-top .os-section { padding: 112px 0; }
#onesong-top .os-seg { padding: 100px 0; }
#onesong-top .os-section-header { margin-bottom: 60px; }


#onesong-top .os-top-sh__label {
  font-family: 'Cormorant Garamond', serif;
  font-style: italic;
  font-weight: 600;
  font-size: 19px;
  letter-spacing: 0.06em;
  text-transform: none;
  color: var(--s-gold);
}
#onesong-top .os-top-sh__title {
  letter-spacing: 0.015em;
  line-height: 1.34;
}
#onesong-top .os-top-sh__divider {
  width: 64px; height: 1px;
  background: linear-gradient(90deg, transparent, var(--s-gold), transparent);
  border-radius: 0;
  margin-top: 20px;
}

#onesong-top #listen .os-top-sh__label { color: var(--s-gold-soft); }


#onesong-top .os-top-hero__kicker {
  display: inline-flex; align-items: center; gap: 12px;
  color: var(--os-rose);
}
#onesong-top .os-top-hero__kicker::before {
  content: ''; width: 34px; height: 1px;
  background: var(--s-gold); display: inline-block;
}
#onesong-top .os-top-hero__title { line-height: 1.32; letter-spacing: 0.005em; }
#onesong-top .os-top-hero__title em {
  position: relative;
  background: linear-gradient(transparent 72%, rgba(196,162,101,0.22) 72%);
}
#onesong-top .os-top-hero__photo {
  border-radius: 20px;
  box-shadow: 0 30px 70px rgba(142,67,96,0.18), 0 10px 24px rgba(0,0,0,0.07);
}


#onesong-top .os-btn-primary {
  background: linear-gradient(135deg, var(--os-rose), var(--os-pink-dark));
  box-shadow: 0 8px 24px rgba(142,67,96,0.25);
}
#onesong-top .os-btn-primary:hover {
  box-shadow: 0 14px 34px rgba(142,67,96,0.32);
}


#onesong-top .os-stats {
  background: linear-gradient(160deg, #46364d 0%, var(--os-charcoal) 100%);
  padding: 52px 0;
}
#onesong-top .os-stats__item { position: relative; }
#onesong-top .os-stats__item:not(:last-child)::after {
  content: ''; position: absolute; top: 50%; right: -12px;
  transform: translateY(-50%);
  width: 1px; height: 42px;
  background: rgba(255,255,255,0.1);
}
#onesong-top .os-stats__num small { color: var(--os-pink); }


/* === セグメントカード（唯一の定義元） === */
#onesong-top .os-seg__card {
  background: var(--os-pink-pale);
  border-radius: 18px;
  padding: 40px 30px;
  text-align: center;
  border: 1px solid rgba(232,164,184,0.18);
  box-shadow: 0 10px 36px rgba(61,47,63,0.05);
  transition: all 0.3s var(--os-ease);
  text-decoration: none;
  color: inherit;
  display: block;
}
#onesong-top .os-seg__card:hover {
  transform: translateY(-6px);
  box-shadow: 0 22px 50px rgba(142,67,96,0.13);
  border-color: var(--os-pink);
}

/* === Other Options バナーカード（唯一の定義元） ===
   .os-seg__card と同じ要素に乗るため #onesong-top スコープで詳細度を確保。
   旧 .os-banner-card* / .os-banner-ic* / --white はここに集約済み。 */
#onesong-top .os-banner-card {
  display: flex;
  align-items: center;
  text-align: left;
  gap: 16px;
  padding: 28px 26px;
}
#onesong-top .os-banner-card--workshop {
  background: #fff;
  border: 2px solid var(--os-pink-mid);
}
#onesong-top .os-banner-card--workshop:hover { border-color: var(--os-rose); }
#onesong-top .os-banner-card--reboot {
  background: var(--os-reboot-bg);
  border: 2px solid var(--os-reboot-border);
  color: #fff;
}
#onesong-top .os-banner-card--reboot:hover { border-color: var(--os-reboot-border-hover); }
/* アイコン色: workshop=ローズ / reboot=白（card-modifier 経由で os-banner-ic{currentColor} に勝つ） */
#onesong-top .os-banner-card--workshop .os-banner-ic { color: var(--os-rose); }
#onesong-top .os-banner-card--reboot .os-banner-ic { color: #fff; }
/* タイトル / 本文 */
#onesong-top .os-banner-title { font-size: 15px; font-weight: 700; margin: 0 0 4px; color: var(--os-charcoal); }
#onesong-top .os-banner-text { font-size: 13px; margin: 0; color: var(--os-text); }
#onesong-top .os-banner-card--reboot .os-banner-title,
#onesong-top .os-banner-title--white { color: #fff; }
#onesong-top .os-banner-card--reboot .os-banner-text,
#onesong-top .os-banner-text--white { color: rgba(255,255,255,0.85); }

/* === FOR BUSINESS バンド（企業誘導） ===
   os-bizband 系は従来どこにもスタイルが無く未装飾だったため新規定義。 */
.os-bizband {
  background: linear-gradient(135deg, #102f4a 0%, #17658b 62%, #2285ad 100%);
  color: #fff;
  padding: 76px 20px;
}
.os-bizband__inner {
  max-width: 760px;
  margin: 0 auto;
  text-align: center;
}
.os-bizband__label {
  font-family: 'DM Sans', sans-serif;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: #b9e8f8;
  margin: 0 0 14px;
}
.os-bizband__title {
  font-size: 30px;
  font-weight: 700;
  line-height: 1.5;
  color: #fff;
  margin: 0 0 22px;
}
.os-bizband__title em {
  font-style: normal;
  color: #aee4f7;
}
.os-bizband__lead {
  font-size: 15px;
  line-height: 2.0;
  color: rgba(255,255,255,0.88);
  margin: 0 0 28px;
}
.os-bizband__points {
  list-style: none;
  padding: 0;
  margin: 0 0 34px;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}
.os-bizband__points li {
  font-size: 13.5px;
  font-weight: 600;
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.24);
  border-radius: 999px;
  padding: 8px 18px;
}
.os-bizband__cta {
  display: inline-block;
  background: #fff;
  color: var(--os-rose);
  font-weight: 700;
  font-size: 15px;
  text-decoration: none;
  padding: 15px 36px;
  border-radius: 999px;
  transition: transform 0.25s var(--os-ease), box-shadow 0.25s var(--os-ease);
}
#onesong-top .os-bizband__cta { color: #17658b; }
.os-bizband__cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(0,0,0,0.2);
}
.os-bizband__tcs {
  margin: 18px 0 0;
  font-size: 13px;
  color: rgba(255,255,255,0.78);
}
.os-bizband__tcs a {
  color: #fff;
  font-weight: 700;
  text-decoration: none;
  border-bottom: 1px solid rgba(255,255,255,0.45);
  padding-bottom: 1px;
  margin-left: 6px;
  transition: border-color 0.2s var(--os-ease), opacity 0.2s var(--os-ease);
}
.os-bizband__tcs a:hover { border-bottom-color: #fff; opacity: 0.9; }
@media (max-width: 768px) {
  .os-bizband { padding: 58px 18px; }
  .os-bizband__title { font-size: 23px; }
  .os-bizband__lead { font-size: 14px; }
}

#onesong-top .os-voice {
  position: relative;
  background: #fff;
  border-radius: 18px;
  padding: 40px 28px 26px;
  border: 1px solid rgba(232,164,184,0.16);
  box-shadow: 0 10px 36px rgba(61,47,63,0.05);
  transition: transform .35s var(--os-ease), box-shadow .35s var(--os-ease);
}
#onesong-top .os-voice:hover {
  transform: translateY(-4px);
  box-shadow: 0 18px 46px rgba(142,67,96,0.1);
}
#onesong-top .os-voice::before {
  content: '\201C';
  position: absolute; top: 14px; left: 24px;
  font-family: 'Cormorant Garamond', serif;
  font-size: 64px; line-height: 1;
  color: var(--s-gold); opacity: 0.5;
}
#onesong-top .os-voice__text {
  position: relative;
  font-size: 15px; line-height: 2.0;
  color: var(--os-text); margin: 0 0 22px;
}
#onesong-top .os-voice__person {
  display: flex; align-items: center; gap: 12px;
  padding-top: 18px; border-top: 1px solid rgba(0,0,0,0.06);
}
#onesong-top .os-voice__avatar {
  width: 46px; height: 46px; border-radius: 50%; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, var(--os-pink), var(--os-rose));
  color: #fff; font-family: 'DM Sans','Noto Sans JP',sans-serif;
  font-weight: 700; font-size: 17px; letter-spacing: 0.02em;
}
#onesong-top .os-voice__name {
  font-size: 13px; font-weight: 700; margin: 0; color: var(--os-charcoal);
}
#onesong-top .os-voice__role {
  font-size: 11px; margin: 0; color: var(--os-text-light);
}

#onesong-top .os-plan-card {
  border-radius: 20px;
  box-shadow: 0 12px 40px rgba(61,47,63,0.06);
}


#onesong-top .os-seg__card[style*="display:flex"]:hover { transform: translateY(-4px); }


#onesong-top .os-cta-section .os-top-sh__title { letter-spacing: 0.02em; }

@media (max-width: 768px) {
  #onesong-top .os-section { padding: 80px 0; }
  #onesong-top .os-seg { padding: 72px 0; }
  #onesong-top .os-section-header { margin-bottom: 44px; }
  #onesong-top .os-stats__item:not(:last-child)::after { display: none; }
}



#onesong-top .os-stats {
  background: linear-gradient(160deg, #ffffff 0%, #fdf3f4 100%);
  border-top: 1px solid rgba(232,164,184,0.30);
  border-bottom: 1px solid rgba(232,164,184,0.30);
}
#onesong-top .os-stats__num { color: var(--os-rose); }
#onesong-top .os-stats__num small { color: var(--os-pink-mid); }
#onesong-top .os-stats__label { color: var(--os-text-light); }
#onesong-top .os-stats__item:not(:last-child)::after { background: rgba(168,93,117,0.18); }

#onesong-top .os-aiq { background: linear-gradient(165deg, #fdeef1 0%, #fbf4ef 55%, #fdf8f5 100%); }
#onesong-top .os-aiq::before { color: rgba(212,114,143,0.12); }
#onesong-top .os-aiq__inner > p:first-child { color: var(--s-gold) !important; }
#onesong-top .os-aiq__q { color: var(--os-rose-deep); }
#onesong-top .os-aiq__q em { color: var(--os-rose); }
#onesong-top .os-aiq__a { color: var(--os-text); }
#onesong-top .os-aiq__a strong { color: var(--os-charcoal); }
#onesong-top .os-aiq__point {
  background: #ffffff;
  border: 1px solid rgba(232,164,184,0.22);
  box-shadow: 0 10px 30px rgba(142,67,96,0.06);
}
#onesong-top .os-aiq__point-title { color: var(--os-pink-dark); }
#onesong-top .os-aiq__point-text { color: var(--os-text-light); }

#onesong-top .os-aiq + div { background: #ffffff !important; }
#onesong-top .os-aiq + div svg path { fill: #fbf4ef !important; }

#onesong-top #listen { background: linear-gradient(165deg, #3a2e3a 0%, #2e2630 100%) !important; }


#onesong-top .os-ic { display: inline-flex; align-items: center; justify-content: center; line-height: 0; }
#onesong-top .os-ic svg { display: block; }


#onesong-top .os-aiq__point-icon {
  width: 52px; height: 52px; margin: 0 auto 14px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: var(--os-rose);
  background: #fff;
  box-shadow: 0 8px 20px rgba(142,67,96,0.08);
}
#onesong-top .os-aiq__point-icon svg { width: 24px; height: 24px; }


#onesong-top .os-seg--editorial { background: #fff; }
#onesong-top .os-seg2 {
  display: grid; grid-template-columns: 0.82fr 1.18fr;
  gap: 64px; align-items: start; max-width: 1040px; margin: 0 auto;
}
#onesong-top .os-seg2__intro .os-top-sh__title { text-align: left; }
#onesong-top .os-seg2__intro .os-top-sh__divider { margin-left: 0; margin-right: auto; }
#onesong-top .os-seg2__lead {
  font-size: 15px; line-height: 1.95; color: var(--os-text-light); margin-top: 22px;
}
#onesong-top .os-seg2__list { display: flex; flex-direction: column; }
#onesong-top .os-seg2__row {
  display: flex; align-items: center; gap: 22px;
  padding: 26px 8px;
  border-top: 1px solid rgba(168,93,117,0.14);
  text-decoration: none; color: inherit;
  transition: padding .3s var(--os-ease), background .3s var(--os-ease);
}
#onesong-top .os-seg2__row:last-child { border-bottom: 1px solid rgba(168,93,117,0.14); }
#onesong-top .os-seg2__row:hover { padding-left: 18px; background: linear-gradient(90deg, rgba(254,240,240,0.7), transparent); }
#onesong-top .os-seg2__ic {
  flex: 0 0 auto; width: 56px; height: 56px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: var(--os-rose);
  background: linear-gradient(135deg, var(--os-pink-pale), #fff);
  box-shadow: 0 6px 16px rgba(142,67,96,0.08);
  transition: all .3s var(--os-ease);
}
#onesong-top .os-seg2__ic svg { width: 27px; height: 27px; }
#onesong-top .os-seg2__row:hover .os-seg2__ic {
  background: linear-gradient(135deg, var(--os-rose), var(--os-pink-dark)); color: #fff;
  transform: scale(1.05);
}
#onesong-top .os-seg2__body { flex: 1 1 auto; min-width: 0; }
#onesong-top .os-seg2__t {
  display: block; font-family: 'DM Sans','Noto Sans JP',sans-serif;
  font-size: 19px; font-weight: 700; color: var(--os-charcoal); margin-bottom: 5px;
}
#onesong-top .os-seg2__x { display: block; font-size: 13.5px; line-height: 1.8; color: var(--os-text-light); }
#onesong-top .os-seg2__arrow {
  flex: 0 0 auto; color: var(--os-rose); font-weight: 700; font-size: 18px;
  transition: transform .3s var(--os-ease);
}
#onesong-top .os-seg2__row:hover .os-seg2__arrow { transform: translateX(6px); }
@media (max-width: 860px) {
  #onesong-top .os-seg2 { grid-template-columns: 1fr; gap: 36px; }
}


#onesong-top .os-flow3 {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 20px; max-width: 1040px; margin: 0 auto; position: relative;
}
#onesong-top .os-flow3::before {
  content: ''; position: absolute; top: 32px; left: 12%; right: 12%;
  height: 2px; z-index: 0;
  background: linear-gradient(90deg, var(--os-pink-light), var(--os-pink-mid), var(--os-pink-light));
}
#onesong-top .os-flow3__step { position: relative; z-index: 1; text-align: center; padding: 0 8px; }
#onesong-top .os-flow3__node {
  width: 64px; height: 64px; border-radius: 50%; margin: 0 auto 22px;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, var(--os-rose), var(--os-pink-dark));
  color: #fff; font-family: 'DM Sans', sans-serif; font-size: 22px; font-weight: 700;
  box-shadow: 0 10px 24px rgba(142,67,96,0.22);
  border: 4px solid var(--os-pink-pale);
}
#onesong-top .os-flow3__title {
  font-family: 'DM Sans','Noto Sans JP',sans-serif; font-size: 20px; font-weight: 700;
  color: var(--os-charcoal); margin: 0 0 4px;
}
#onesong-top .os-flow3__sub {
  font-size: 13px; color: var(--os-pink-dark); font-weight: 700; letter-spacing: 0.08em; margin: 0 0 10px;
}
#onesong-top .os-flow3__text { font-size: 14px; line-height: 1.85; color: var(--os-text); margin: 0; }
@media (max-width: 640px) {
  #onesong-top .os-flow3 { grid-template-columns: 1fr; gap: 40px; max-width: 300px; }
  #onesong-top .os-flow3::before {
    left: 50%; right: auto; top: 0; bottom: 0; width: 2px; height: auto;
    background: linear-gradient(180deg, var(--os-pink-light), var(--os-pink-mid), var(--os-pink-light));
  }
}


#onesong-top .os-banner-ic { flex: 0 0 auto; width: 44px; height: 44px; color: currentColor; }
#onesong-top .os-banner-ic svg { width: 32px; height: 32px; }


#onesong-top .os-voice2 {
  display: grid; grid-template-columns: 1.12fr 0.88fr;
  gap: 22px; max-width: 1000px; margin: 0 auto; align-items: stretch;
}
#onesong-top .os-voice2__side { display: flex; flex-direction: column; gap: 22px; }
#onesong-top .os-voice2__side .os-voice { flex: 1; }
#onesong-top .os-voice--feature {
  padding: 50px 42px;
  display: flex; flex-direction: column; justify-content: center;
  background: linear-gradient(160deg, #fff 0%, #fff6f8 100%);
}
#onesong-top .os-voice--feature::before { font-size: 92px; top: 16px; left: 32px; opacity: 0.5; }
#onesong-top .os-voice--feature .os-voice__text {
  font-size: 18px; line-height: 2.05; margin: 0 0 28px;
}
#onesong-top .os-voice--feature .os-voice__avatar { width: 54px; height: 54px; font-size: 20px; }
#onesong-top .os-voice--feature .os-voice__name { font-size: 14px; }
@media (max-width: 768px) {
  #onesong-top .os-voice2 { grid-template-columns: 1fr; }
}


#onesong-top .os-plan-card--featured {
  background: linear-gradient(150deg, var(--os-pink-mid) 0%, var(--os-rose) 60%, var(--os-rose-deep) 100%);
  box-shadow: 0 20px 50px rgba(142,67,96,0.22);
}



#onesong-top .os-top-hero__photo::before {
  content: ''; position: absolute; inset: 0; z-index: 2; pointer-events: none;
  border-radius: inherit;
  box-shadow: inset 0 0 0 1px rgba(196,162,101,0.40);
  background: linear-gradient(180deg, transparent 58%, rgba(110,45,71,0.16));
}

#onesong-top #listen .os-listen-card__visual { position: relative; }
#onesong-top #listen .os-listen-card__visual::after {
  content: ''; position: absolute; inset: 0; pointer-events: none;
  background: linear-gradient(180deg, transparent 58%, rgba(18,14,18,0.42));
}

#onesong-top .os-listen-bridge {
  padding: 58px 0;
  color: #fff;
  background: linear-gradient(135deg, #342a35 0%, #211b22 100%);
}
#onesong-top .os-listen-bridge__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  max-width: 1040px;
}
#onesong-top .os-listen-bridge__copy { max-width: 700px; }
#onesong-top .os-listen-bridge__copy h2 {
  margin: 5px 0 10px;
  color: #fff;
  font-size: clamp(24px, 3vw, 34px);
  line-height: 1.5;
}
#onesong-top .os-listen-bridge__copy > p:last-child {
  margin: 0;
  color: rgba(255,255,255,.72);
  font-size: 15px;
  line-height: 1.9;
}
#onesong-top .os-listen-bridge .os-btn { flex: 0 0 auto; }
@media (max-width: 760px) {
  #onesong-top .os-listen-bridge { padding: 46px 0; }
  #onesong-top .os-listen-bridge__inner {
    align-items: flex-start;
    flex-direction: column;
    gap: 24px;
  }
}


#onesong-top .os-addvoice__inner {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(280px, 0.72fr);
  gap: 48px;
  max-width: 1040px;
  margin: 0 auto;
  align-items: center;
}
#onesong-top .os-addvoice__copy { text-align: left; }
#onesong-top .os-addvoice__copy .os-top-sh__divider { margin-left: 0; margin-right: auto; }
#onesong-top .os-addvoice__btns {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}
#onesong-top .os-addvoice__visual {
  position: relative;
  overflow: hidden;
  border-radius: 22px;
  aspect-ratio: 1/1;
  box-shadow: 0 22px 56px rgba(74,45,63,0.16), 0 0 0 1px rgba(196,162,101,0.30);
  background: linear-gradient(135deg, #112f4a, #f8d1d9);
}
#onesong-top .os-addvoice__visual::after {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, transparent 58%, rgba(110,45,71,0.16));
}
#onesong-top .os-addvoice__visual img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
@media (max-width: 860px) {
  #onesong-top .os-addvoice__inner {
    grid-template-columns: 1fr;
    gap: 30px;
    max-width: 520px;
    text-align: center;
  }
  #onesong-top .os-addvoice__copy { text-align: center; }
  #onesong-top .os-addvoice__copy .os-top-sh__divider { margin-left: auto; }
  #onesong-top .os-addvoice__btns { justify-content: center; }
}


#onesong-top .os-note-card { transition: transform .3s var(--os-ease), box-shadow .3s var(--os-ease) !important; }
#onesong-top .os-note-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 18px 40px rgba(142,67,96,0.12) !important;
  border-color: rgba(232,164,184,0.4) !important;
}

#onesong-top .os-section--youtube {
  background: linear-gradient(180deg, #fff 0%, #fff7f9 100%);
}
#onesong-top .os-youtube-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  max-width: 1120px;
  margin: 0 auto;
}
#onesong-top .os-youtube-card {
  position: relative;
  overflow: hidden;
  border-radius: 18px;
  aspect-ratio: 16 / 9;
  background: #1f1a20;
  box-shadow: 0 24px 60px rgba(74,45,63,0.16), 0 0 0 1px rgba(232,164,184,0.24);
}
#onesong-top .os-youtube-card iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}
@media (max-width: 820px) {
  #onesong-top .os-youtube-grid {
    display: flex;
    gap: 14px;
    max-width: none;
    margin: 0 -18px;
    padding: 0 18px 14px;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
  }
  #onesong-top .os-youtube-card {
    flex: 0 0 min(82vw, 430px);
    scroll-snap-align: start;
  }
}


#onesong-top .os-btn,
#onesong-top .os-btn-primary,
#onesong-top .os-btn-ghost,
#onesong-top .os-top-link-rose,
#onesong-top .os-follow-btn {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

#onesong-top .os-btn:focus-visible,
#onesong-top .os-btn-primary:focus-visible,
#onesong-top .os-btn-ghost:focus-visible,
#onesong-top .os-top-link-rose:focus-visible,
#onesong-top .os-follow-btn:focus-visible {
  outline: 3px solid rgba(212, 114, 143, 0.85);
  outline-offset: 4px;
}

@media (prefers-reduced-motion: reduce) {
  #onesong-top *,
  #onesong-top *::before,
  #onesong-top *::after {
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    scroll-behavior:auto !important;
    transition-duration:.001ms !important;
  }

  #onesong-top .os-reveal,
  #onesong-top .os-reveal.is-visible {
    opacity:1 !important;
    transform:none !important;
  }
}
/* 制作実績カードはカード全体をリンクにする */
.os-top-case-card {
  color: inherit;
  text-decoration: none;
  transition: transform .25s ease, box-shadow .25s ease;
}
.os-top-case-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 36px rgba(74, 48, 61, .13);
}