@charset "UTF-8";

/* =====================================================
   ONE SONG Design System v3
   - Bolder contrast, motion, SONORY branding
   - Business pages: blue theme
   ===================================================== */

/* =========================
   Design Tokens
========================= */
:root {
  /* Color — Personal (pink) */
  --os-cream: #fdf8f5;
  --os-pink-pale: #fef0f0;
  --os-pink-light: #f8dde2;
  --os-pink: #e8a4b8;
  --os-pink-mid: #d4728f;
  --os-pink-dark: #a85d75;
  --os-rose: #8e4360;
  --os-rose-deep: #6e2d47;
  --os-charcoal: #1e1e1e;
  --os-text: #2a2a2a;
  --os-text-light: #4f4f4f;
  --os-white: #fff;
  --os-gold: #c4a265;

  /* Color — Business (blue) */
  --os-blue-pale: #eef3fa;
  --os-blue-light: #c8d9ed;
  --os-blue: #6a9fd8;
  --os-blue-mid: #4a7fb8;
  --os-blue-dark: #2d5a8a;
  --os-navy: #1a3352;

  /* Typography */
  --os-font-display: 'Cormorant Garamond', 'Noto Serif JP', serif;
  --os-font-body: 'Noto Sans JP', 'Meiryo', system-ui, sans-serif;
  --os-font-number: 'DM Sans', 'Inter', 'Noto Sans JP', system-ui, sans-serif;

  /* Motion */
  --os-ease: cubic-bezier(0.16, 1, 0.3, 1);
  --os-ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* =========================
   Base
========================= */
.onesong {
  font-family: var(--os-font-body);
  color: var(--os-text);
  line-height: 1.8;
  background: var(--os-cream);
  -webkit-font-smoothing: antialiased;
}

.onesong *, .onesong *::before, .onesong *::after {
  box-sizing: border-box;
}

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

/* Number font fix — make numbers elegant and readable */
.onesong .os-price,
.onesong .os-plan-card__price,
.onesong .os-option-price,
.onesong .os-flow-step__num,
.onesong .os-producer-step__num {
  font-family: var(--os-font-number);
  font-feature-settings: 'pnum' on, 'lnum' on;
  letter-spacing: 0.02em;
}

/* =========================
   Layout
========================= */
.onesong .os-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

.onesong .os-inner--narrow { max-width: 800px; }
.onesong .os-inner--wide { max-width: 1200px; }

/* =========================
   Section
========================= */
.onesong .os-section {
  padding: 100px 0;
  position: relative;
  overflow: hidden;
}

.onesong .os-section-muted { background: var(--os-pink-pale); }
.onesong .os-section-white { background: var(--os-white); }

.onesong .os-section-dark {
  background: var(--os-charcoal);
  color: #fff;
}

.onesong .os-section-accent {
  background: linear-gradient(135deg, var(--os-rose-deep), var(--os-pink-dark));
  color: #fff;
}

/* Section header */
.onesong .os-section-header {
  text-align: center;
  margin-bottom: 56px;
}

.onesong .os-section-header__label {
  font-family: var(--os-font-display);
  font-size: 13px;
  letter-spacing: 0.25em;
  color: var(--os-pink-dark);
  font-weight: 600;
  margin-bottom: 12px;
}

.onesong .os-section-header__title {
  font-family: var(--os-font-display);
  font-size: clamp(24px, 3.5vw, 36px);
  font-weight: 400;
  line-height: 1.4;
  color: var(--os-charcoal);
  letter-spacing: 0.04em;
}

.onesong .os-section-header__sub {
  font-size: 16px;
  color: var(--os-text-light);
  margin-top: 16px;
  line-height: 1.9;
  max-width: 600px;
  margin-left: auto; margin-right: auto;
  font-weight: 300;
}

.onesong .os-divider {
  width: 40px; height: 1px;
  background: var(--os-pink-mid);
  margin: 16px auto 0;
}

/* Dark/accent overrides */
.onesong .os-section-dark .os-section-header__label,
.onesong .os-section-accent .os-section-header__label { color: var(--os-pink-light); }
.onesong .os-section-dark .os-section-header__title,
.onesong .os-section-accent .os-section-header__title { color: #fff; }
.onesong .os-section-dark .os-section-header__sub,
.onesong .os-section-accent .os-section-header__sub { color: rgba(255,255,255,0.6); }
.onesong .os-section-dark .os-divider,
.onesong .os-section-accent .os-divider { background: rgba(255,255,255,0.3); }

/* =========================
   Floating Bubbles (background decoration)
========================= */
.os-bubbles {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
  z-index: 0;
}

.os-bubble {
  position: absolute;
  border-radius: 50%;
  opacity: 0.08;
  animation: osBubbleFloat 20s ease-in-out infinite;
}

.os-bubble--1 { width: 300px; height: 300px; background: var(--os-pink); top: -80px; left: -60px; animation-duration: 18s; }
.os-bubble--2 { width: 200px; height: 200px; background: var(--os-pink-mid); bottom: -40px; right: -30px; animation-duration: 22s; animation-delay: -5s; }
.os-bubble--3 { width: 150px; height: 150px; background: var(--os-pink-light); top: 40%; left: 70%; animation-duration: 25s; animation-delay: -10s; }
.os-bubble--4 { width: 100px; height: 100px; background: var(--os-rose); top: 20%; right: 15%; animation-duration: 15s; animation-delay: -3s; }

/* Business blue bubbles */
.os-bubble--b1 { background: var(--os-blue) !important; }
.os-bubble--b2 { background: var(--os-blue-mid) !important; }
.os-bubble--b3 { background: var(--os-blue-light) !important; }
.os-bubble--b4 { background: var(--os-blue-dark) !important; }

@keyframes osBubbleFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  25% { transform: translate(20px, -30px) scale(1.05); }
  50% { transform: translate(-15px, 15px) scale(0.95); }
  75% { transform: translate(10px, 20px) scale(1.02); }
}

/* =========================
   Typography
========================= */
.onesong .os-kicker {
  font-family: var(--os-font-display);
  font-size: 15px;
  letter-spacing: 0.2em;
  color: var(--os-pink-dark);
  font-weight: 600;
  margin: 0 0 14px;
}

.onesong .os-title {
  font-family: var(--os-font-display);
  font-size: clamp(30px, 4.5vw, 52px);
  font-weight: 400;
  line-height: 1.25;
  letter-spacing: 0.04em;
  color: var(--os-charcoal);
  margin: 0 0 18px;
  font-variant-numeric: lining-nums;
  font-feature-settings: 'lnum' on;
}

/* Numbers inside display text — force readable font */
.onesong .os-num {
  font-family: 'DM Sans', 'Inter', 'Noto Sans JP', system-ui, sans-serif !important;
  font-weight: 700;
  font-variant-numeric: lining-nums;
  font-feature-settings: 'lnum' on;
}

.onesong .os-title em {
  font-style: normal;
  font-weight: inherit;
  color: var(--os-rose);
  position: relative;
}

/* Underline accent for em */
.onesong .os-title em::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: 2px;
  height: 2px;
  background: linear-gradient(90deg, var(--os-pink), var(--os-rose));
  opacity: 0.4;
  border-radius: 2px;
}

.onesong .os-lead {
  font-size: 16px;
  line-height: 2;
  color: var(--os-text-light);
  margin: 0 0 24px;
  max-width: 620px;
  font-weight: 300;
}

.onesong .os-h2 {
  font-family: var(--os-font-display);
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 400;
  line-height: 1.4;
  color: var(--os-charcoal);
  margin: 0 0 18px;
  letter-spacing: 0.04em;
}

.onesong .os-h3 {
  font-size: 18px;
  font-weight: 700;
  margin: 0 0 8px;
  color: var(--os-charcoal);
}

.onesong .os-text {
  font-size: 16px;
  line-height: 2;
  margin: 0 0 18px;
  max-width: 780px;
  font-weight: 300;
  color: var(--os-text);
}

.onesong .os-text strong { font-weight: 700; color: var(--os-charcoal); }

.onesong .os-note {
  margin-top: 10px;
  font-size: 14px;
  color: var(--os-text-light);
  opacity: 0.75;
  line-height: 1.6;
}

/* Declaration / Manifesto */
.onesong .os-decl-lead {
  font-family: var(--os-font-display);
  font-size: clamp(20px, 2.8vw, 30px);
  line-height: 1.7;
  color: var(--os-charcoal);
  margin-bottom: 16px;
  letter-spacing: 0.05em;
  font-variant-numeric: lining-nums;
  font-feature-settings: 'lnum' on;
}

/* =========================
   Hero
========================= */
.onesong .os-hero {
  position: relative;
  padding: 140px 0 100px;
  overflow: hidden;
  background:
    radial-gradient(ellipse 80% 60% at 20% 40%, rgba(212,114,143,0.15), transparent),
    radial-gradient(ellipse 60% 50% at 80% 30%, rgba(254,240,240,0.6), transparent),
    linear-gradient(180deg, var(--os-pink-pale) 0%, var(--os-cream) 70%);
}

.onesong .os-hero::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0; right: 0;
  height: 120px;
  background: linear-gradient(to top, var(--os-cream), transparent);
  pointer-events: none;
}

.onesong .os-hero-tight { padding: 120px 0 80px; }

.onesong .os-hero--split .os-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.onesong .os-hero__visual { position: relative; z-index: 1; }

.onesong .os-hero__img {
  border-radius: 28px;
  overflow: hidden;
  box-shadow: 0 30px 60px rgba(0,0,0,0.1), 0 10px 20px rgba(142,67,96,0.12);
  aspect-ratio: 4/5;
  background: linear-gradient(135deg, var(--os-pink-light), var(--os-pink-pale));
}

.onesong .os-hero__img img { width: 100%; height: 100%; object-fit: cover; }

.onesong .os-hero__badge {
  position: absolute;
  bottom: -16px; right: -8px;
  background: var(--os-white);
  border-radius: 18px;
  padding: 14px 20px;
  box-shadow: 0 12px 30px rgba(0,0,0,0.1);
  display: flex;
  align-items: center;
  gap: 12px;
  animation: osBadgeBounce 3s ease-in-out infinite;
}

@keyframes osBadgeBounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-5px); }
}

.onesong .os-hero__badge-icon {
  width: 40px; height: 40px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--os-pink-mid), var(--os-rose));
  display: grid; place-items: center;
  color: #fff; font-size: 18px;
}

.onesong .os-hero__badge-text { font-size: 13px; font-weight: 700; line-height: 1.4; }
.onesong .os-hero__badge-text small { display: block; font-size: 10px; font-weight: 400; color: var(--os-text-light); }

/* =========================
   Buttons
========================= */
.onesong .os-btn {
  display: inline-flex;
  align-items: center; justify-content: center;
  gap: 8px;
  padding: 14px 24px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 700;
  text-decoration: none;
  border: none; cursor: pointer;
  transition: all 0.35s var(--os-ease);
  letter-spacing: 0.02em;
  line-height: 1.4;
}

.onesong .os-btn-primary {
  background: var(--os-charcoal);
  color: var(--os-white);
  box-shadow: 0 6px 20px rgba(0,0,0,0.15);
}

.onesong .os-btn-primary:hover {
  background: var(--os-rose);
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(142,67,96,0.3);
}

.onesong .os-btn-ghost {
  background: rgba(232,164,184,0.1);
  color: var(--os-charcoal);
  border: 1px solid rgba(232,164,184,0.3);
}

.onesong .os-btn-ghost:hover {
  background: rgba(232,164,184,0.2);
  border-color: var(--os-pink-mid);
}

.onesong .os-btn--large { padding: 17px 32px; font-size: 16px; }

/* Dark/accent overrides */
.onesong .os-section-dark .os-btn-ghost,
.onesong .os-section-accent .os-btn-ghost {
  color: #fff;
  border-color: rgba(255,255,255,0.25);
  background: rgba(255,255,255,0.06);
}
.onesong .os-section-dark .os-btn-ghost:hover,
.onesong .os-section-accent .os-btn-ghost:hover {
  background: rgba(255,255,255,0.14);
  border-color: rgba(255,255,255,0.4);
}

.onesong .os-cta-row { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; margin-top: 12px; }
.onesong .os-cta-center { justify-content: center; }

/* =========================
   Cards
========================= */
.onesong .os-card {
  background: var(--os-white);
  border-radius: 24px;
  padding: 28px;
  margin: 18px 0;
  border: 1px solid rgba(232,164,184,0.15);
  box-shadow: 0 12px 30px rgba(0,0,0,0.04);
  transition: transform 0.3s var(--os-ease), box-shadow 0.3s var(--os-ease);
}

.onesong .os-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 18px 40px rgba(0,0,0,0.06);
}

.onesong .os-card-head {
  display: flex; gap: 12px; align-items: baseline; justify-content: space-between;
  border-bottom: 1px solid rgba(0,0,0,0.06);
  padding-bottom: 12px; margin-bottom: 16px;
}

.onesong .os-price {
  font-family: var(--os-font-number);
  font-weight: 700;
  font-size: 22px;
  margin: 0;
  color: var(--os-charcoal);
  letter-spacing: 0.03em;
}

/* =========================
   Grids
========================= */
.onesong .os-grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 16px; }
.onesong .os-grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }

.onesong .os-mini {
  background: rgba(0,0,0,0.02);
  border: 1px solid rgba(0,0,0,0.04);
  border-radius: 16px;
  padding: 18px;
}
.onesong .os-mini h4 { margin: 0 0 8px; font-size: 15px; font-weight: 700; }
.onesong .os-mini p { margin: 0; font-size: 14px; line-height: 1.8; color: var(--os-text-light); }

/* =========================
   Value Proposition Cards
========================= */
.onesong .os-value-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.onesong .os-value-card {
  background: var(--os-white);
  border-radius: 20px;
  padding: 28px 22px;
  border: 1px solid rgba(232,164,184,0.15);
  box-shadow: 0 8px 24px rgba(0,0,0,0.04);
  text-align: center;
  transition: all 0.35s var(--os-ease);
  position: relative;
  overflow: hidden;
}

.onesong .os-value-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--os-pink), var(--os-rose));
  opacity: 0;
  transition: opacity 0.3s;
}

.onesong .os-value-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 36px rgba(0,0,0,0.07);
}

.onesong .os-value-card:hover::before { opacity: 1; }

.onesong .os-value-card__icon { font-size: 30px; margin-bottom: 14px; }
.onesong .os-value-card__title { font-size: 16px; font-weight: 700; color: var(--os-charcoal); margin-bottom: 8px; }
.onesong .os-value-card__text { font-size: 14px; line-height: 1.8; color: var(--os-text-light); margin: 0; }

/* =========================
   Feature Cards (with image)
========================= */
.onesong .os-feature-card {
  background: var(--os-white);
  border-radius: 24px;
  overflow: hidden;
  transition: all 0.4s var(--os-ease);
  border: 1px solid rgba(0,0,0,0.03);
}
.onesong .os-feature-card:hover { transform: translateY(-4px); box-shadow: 0 20px 50px rgba(0,0,0,0.06); }

.onesong .os-feature-card__img {
  aspect-ratio: 16/10; overflow: hidden;
  background: var(--os-pink-pale);
}
.onesong .os-feature-card__img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s var(--os-ease); }
.onesong .os-feature-card:hover .os-feature-card__img img { transform: scale(1.04); }
.onesong .os-feature-card__body { padding: 28px; }

/* =========================
   Use Case Cards
========================= */
.onesong .os-usecase-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.onesong .os-usecase-grid--compact { grid-template-columns: repeat(5, 1fr); }

.onesong .os-usecase-card {
  background: var(--os-white);
  border-radius: 20px;
  padding: 24px 20px;
  border: 1px solid rgba(232,164,184,0.12);
  box-shadow: 0 8px 20px rgba(0,0,0,0.03);
  transition: all 0.35s var(--os-ease);
  text-align: center;
}

.onesong .os-usecase-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 36px rgba(0,0,0,0.06);
  border-color: var(--os-pink-mid);
}

.onesong .os-usecase-card__icon { font-size: 28px; margin-bottom: 12px; }
.onesong .os-usecase-card__title { font-size: 16px; font-weight: 700; color: var(--os-charcoal); margin-bottom: 8px; }
.onesong .os-usecase-card__text { font-size: 14px; line-height: 1.8; color: var(--os-text-light); margin: 0; }

/* =========================
   Voice / Interview
========================= */
.onesong .os-voice-item {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 50px; align-items: center; margin-bottom: 72px;
}
.onesong .os-voice-item:last-child { margin-bottom: 0; }
.onesong .os-voice-item--reverse { direction: rtl; }
.onesong .os-voice-item--reverse > * { direction: ltr; }

.onesong .os-voice-img {
  border-radius: 24px; overflow: hidden; aspect-ratio: 4/3;
  background: var(--os-pink-pale);
  box-shadow: 0 16px 40px rgba(0,0,0,0.06);
}
.onesong .os-voice-img img { width: 100%; height: 100%; object-fit: cover; }

.onesong .os-voice-tag {
  display: inline-block; padding: 5px 14px;
  background: var(--os-pink-pale); color: var(--os-pink-dark);
  border-radius: 999px; font-size: 13px; font-weight: 700;
  letter-spacing: 0.06em; margin-bottom: 14px;
}

.onesong .os-voice-title {
  font-family: var(--os-font-display);
  font-size: 22px; font-weight: 400; line-height: 1.5;
  color: var(--os-charcoal); margin-bottom: 14px;
}

.onesong .os-voice-text { font-size: 15px; line-height: 2; color: var(--os-text-light); margin-bottom: 18px; }

.onesong .os-voice-person { display: flex; align-items: center; gap: 12px; padding-top: 18px; border-top: 1px solid rgba(0,0,0,0.06); }

.onesong .os-voice-avatar {
  width: 42px; height: 42px; border-radius: 50%;
  background: linear-gradient(135deg, var(--os-pink-light), var(--os-pink-mid));
  flex-shrink: 0; overflow: hidden;
}
.onesong .os-voice-avatar img { width: 100%; height: 100%; object-fit: cover; }
.onesong .os-voice-name { font-size: 14px; font-weight: 700; }
.onesong .os-voice-desc { font-size: 12px; color: var(--os-text-light); margin-top: 2px; }

/* =========================
   Interview Card
========================= */
.onesong .os-interview-card {
  background: var(--os-white); border-radius: 28px; overflow: hidden;
  box-shadow: 0 20px 50px rgba(0,0,0,0.04);
  display: grid; grid-template-columns: 1fr 1.2fr;
  max-width: 900px; margin: 0 auto;
}
.onesong .os-interview-card__photo { aspect-ratio: 1/1; background: var(--os-pink-pale); overflow: hidden; }
.onesong .os-interview-card__photo img { width: 100%; height: 100%; object-fit: cover; }
.onesong .os-interview-card__body { padding: 40px 36px; display: flex; flex-direction: column; justify-content: center; }
.onesong .os-interview-label { font-size: 12px; letter-spacing: 0.15em; color: var(--os-pink-dark); font-weight: 700; margin-bottom: 12px; }
.onesong .os-interview-headline { font-family: var(--os-font-display); font-size: 22px; font-weight: 400; line-height: 1.5; color: var(--os-charcoal); margin-bottom: 16px; }
.onesong .os-interview-excerpt { font-size: 15px; line-height: 2; color: var(--os-text-light); margin-bottom: 24px; padding-left: 16px; border-left: 2px solid var(--os-pink-mid); }

/* =========================
   Quote
========================= */
.onesong .os-quote {
  margin-top: 20px; padding: 24px 28px;
  border-radius: 20px;
  background: rgba(255,255,255,0.7);
  border: 1px solid rgba(232,164,184,0.15);
  backdrop-filter: blur(10px);
  position: relative;
}
.onesong .os-quote::before {
  content: '\201C'; position: absolute; top: -8px; left: 20px;
  font-family: var(--os-font-display); font-size: 54px;
  color: var(--os-pink-mid); opacity: 0.3; line-height: 1;
}
.onesong .os-quote-text { margin: 0; font-weight: 500; line-height: 1.8; font-size: 16px; color: var(--os-charcoal); }

/* =========================
   Steps / Flow
========================= */
.onesong .os-steps { list-style: none; padding: 0; margin: 20px 0 0; display: grid; gap: 14px; }
.onesong .os-step { background: var(--os-white); border-radius: 18px; padding: 20px 22px; box-shadow: 0 6px 16px rgba(0,0,0,0.03); transition: transform 0.3s var(--os-ease); }
.onesong .os-step:hover { transform: translateY(-2px); }
.onesong .os-step h3 { margin: 0 0 6px; font-size: 16px; font-weight: 700; }
.onesong .os-step p { margin: 0; font-size: 15px; line-height: 1.8; color: var(--os-text-light); }

.onesong .os-flow-timeline {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 24px; position: relative;
}
.onesong .os-flow-timeline::before {
  content: ''; position: absolute;
  top: 30px; left: 60px; right: 60px;
  height: 2px;
  background: linear-gradient(90deg, var(--os-pink), var(--os-rose));
  opacity: 0.2;
}
.onesong .os-flow-step { text-align: center; position: relative; }
.onesong .os-flow-step__num {
  width: 56px; height: 56px; border-radius: 50%;
  background: var(--os-white); border: 2px solid var(--os-pink-mid);
  display: grid; place-items: center;
  margin: 0 auto 16px;
  font-family: var(--os-font-number);
  font-size: 22px; font-weight: 600;
  color: var(--os-pink-dark);
  position: relative; z-index: 1;
  transition: all 0.3s;
}
.onesong .os-flow-step:hover .os-flow-step__num { background: var(--os-pink-mid); color: #fff; transform: scale(1.06); }
.onesong .os-flow-step__title { font-size: 15px; font-weight: 700; margin-bottom: 6px; }
.onesong .os-flow-step__desc { font-size: 14px; color: var(--os-text-light); line-height: 1.7; }

/* =========================
   Lists
========================= */
.onesong .os-list { margin: 0 0 18px; padding-left: 0; list-style: none; line-height: 1.8; }
.onesong .os-list li { margin: 8px 0; padding-left: 22px; position: relative; font-size: 15px; }
.onesong .os-list li::before { content: '✓'; position: absolute; left: 0; color: var(--os-pink-dark); font-weight: 700; font-size: 14px; }

/* =========================
   Comparison Table
========================= */
.onesong .os-compare-wrap { overflow-x: auto; }
.onesong .os-compare { width: 100%; border-collapse: collapse; background: var(--os-white); border-radius: 20px; overflow: hidden; box-shadow: 0 12px 30px rgba(0,0,0,0.04); }
.onesong .os-compare th, .onesong .os-compare td { padding: 16px 14px; border-bottom: 1px solid rgba(0,0,0,0.05); text-align: center; font-size: 15px; }
.onesong .os-compare thead th { background: rgba(232,164,184,0.12); font-weight: 700; font-size: 14px; }
.onesong .os-compare thead th.is-recommend { background: rgba(142,67,96,0.15); }
.onesong .os-compare tbody th { text-align: left; background: rgba(0,0,0,0.015); font-weight: 600; font-size: 14px; }

/* =========================
   Plan Cards
========================= */
.onesong .os-plan-card {
  background: var(--os-cream); border-radius: 24px;
  padding: 32px 28px; border: 1px solid rgba(0,0,0,0.04);
  transition: all 0.4s var(--os-ease); position: relative;
}
.onesong .os-plan-card:hover { transform: translateY(-4px); box-shadow: 0 20px 50px rgba(0,0,0,0.06); }

.onesong .os-plan-card--featured {
  background: var(--os-charcoal); color: #fff;
  border: none; transform: scale(1.04);
  box-shadow: 0 20px 60px rgba(0,0,0,0.18);
}
.onesong .os-plan-card--featured:hover { transform: scale(1.04) translateY(-4px); }

.onesong .os-plan-card__badge {
  position: absolute; top: -12px; left: 50%; transform: translateX(-50%);
  background: linear-gradient(135deg, var(--os-pink-mid), var(--os-rose));
  color: #fff; padding: 5px 16px; border-radius: 999px;
  font-size: 12px; font-weight: 800; letter-spacing: 0.08em;
  box-shadow: 0 4px 12px rgba(142,67,96,0.3);
}

.onesong .os-plan-card__name { font-size: 13px; letter-spacing: 0.1em; opacity: 0.6; font-weight: 600; margin-bottom: 6px; }
.onesong .os-plan-card__title { font-family: var(--os-font-display); font-size: 22px; margin-bottom: 8px; }
.onesong .os-plan-card__price { font-family: var(--os-font-number); font-size: 28px; font-weight: 700; margin-bottom: 4px; letter-spacing: 0.02em; }
.onesong .os-plan-card__price small { font-size: 14px; font-weight: 400; opacity: 0.7; }
.onesong .os-plan-card__desc { font-size: 14px; opacity: 0.7; margin-bottom: 22px; line-height: 1.7; }

.onesong .os-plan-card--featured .os-btn-primary { background: #fff; color: var(--os-charcoal); }
.onesong .os-plan-card--featured .os-btn-primary:hover { background: var(--os-pink-light); }
.onesong .os-plan-card--featured .os-list li::before { color: var(--os-pink); }
.onesong .os-plan-card .os-btn { width: 100%; }

/* =========================
   Option Cards
========================= */
.onesong .os-options-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }

.onesong .os-option-card {
  background: var(--os-white); border-radius: 20px;
  padding: 26px 22px;
  border: 1px solid rgba(232,164,184,0.12);
  box-shadow: 0 8px 20px rgba(0,0,0,0.03);
  transition: all 0.35s var(--os-ease); position: relative;
}
.onesong .os-option-card:hover { transform: translateY(-3px); box-shadow: 0 14px 32px rgba(0,0,0,0.06); }

.onesong .os-option-card--featured {
  background: linear-gradient(135deg, var(--os-charcoal), #3a3a3a);
  color: #fff; border: none; grid-column: span 2;
}
.onesong .os-option-card--featured .os-option-card__title { color: #fff; }
.onesong .os-option-card--featured .os-option-card__text { color: rgba(255,255,255,0.7); }

/* Option card with image */
.onesong .os-option-card__img {
  width: 100%; height: 160px;
  border-radius: 12px; overflow: hidden;
  margin-bottom: 14px;
  background: var(--os-pink-pale);
}
.onesong .os-option-card__img img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 0.4s var(--os-ease);
}
.onesong .os-option-card:hover .os-option-card__img img { transform: scale(1.04); }
.onesong .os-option-card--featured .os-option-card__img { background: rgba(255,255,255,0.1); }

.onesong .os-option-card__badge {
  position: absolute; top: -10px; right: 16px;
  background: linear-gradient(135deg, var(--os-pink-mid), var(--os-rose));
  color: #fff; padding: 4px 14px; border-radius: 999px;
  font-size: 10px; font-weight: 800; letter-spacing: 0.1em;
}
.onesong .os-option-card__title { font-size: 16px; font-weight: 700; margin-bottom: 10px; }
.onesong .os-option-card__text { font-size: 15px; line-height: 1.9; color: var(--os-text-light); margin: 0; }
.onesong .os-option-price { display: inline-block; margin-top: 8px; font-family: var(--os-font-number); font-size: 18px; font-weight: 700; color: var(--os-pink-mid); }
.onesong .os-option-card--featured .os-option-price { color: var(--os-pink-light); }

/* =========================
   Case Cards
========================= */
.onesong .os-case-card {
  background: var(--os-white); border-radius: 24px; overflow: hidden;
  box-shadow: 0 10px 30px rgba(0,0,0,0.04);
  display: grid; grid-template-columns: 0.9fr 1.1fr;
  margin-bottom: 40px; transition: all 0.4s var(--os-ease);
  border: 1px solid rgba(232,164,184,0.1);
}
.onesong .os-case-card:hover { transform: translateY(-3px); box-shadow: 0 16px 40px rgba(0,0,0,0.06); }

.onesong .os-case-card--reverse { grid-template-columns: 1.1fr 0.9fr; }
.onesong .os-case-card--reverse .os-case-card__img { order: 2; }
.onesong .os-case-card--reverse .os-case-card__body { order: 1; }

.onesong .os-case-card__img { background: var(--os-pink-pale); overflow: hidden; min-height: 280px; }
.onesong .os-case-card__img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s var(--os-ease); }
.onesong .os-case-card:hover .os-case-card__img img { transform: scale(1.04); }
.onesong .os-case-card__body { padding: 32px; display: flex; flex-direction: column; justify-content: center; }
.onesong .os-case-card__tag { display: inline-block; padding: 4px 12px; background: var(--os-pink-pale); color: var(--os-pink-dark); border-radius: 999px; font-size: 12px; font-weight: 700; margin-bottom: 12px; width: fit-content; }
.onesong .os-case-card__title { font-family: var(--os-font-display); font-size: 20px; font-weight: 400; line-height: 1.5; color: var(--os-charcoal); margin-bottom: 12px; }
.onesong .os-case-card__text { font-size: 15px; line-height: 1.9; color: var(--os-text-light); }
.onesong .os-case-card__text strong { color: var(--os-charcoal); font-weight: 600; }
.onesong .os-case-card__footer { margin-top: 16px; padding-top: 14px; border-top: 1px solid rgba(0,0,0,0.05); font-size: 13px; color: var(--os-text-light); }

/* =========================
   FAQ
========================= */
.onesong .os-faq { display: grid; gap: 12px; margin-top: 16px; }
.onesong .os-faq-item { background: var(--os-white); border-radius: 16px; padding: 18px 20px; box-shadow: 0 6px 16px rgba(0,0,0,0.03); border-left: 3px solid var(--os-pink-mid); }
.onesong .os-faq-item summary { cursor: pointer; font-weight: 700; padding: 4px 0; font-size: 16px; list-style: none; }
.onesong .os-faq-item summary::-webkit-details-marker { display: none; }
.onesong .os-faq-item summary::after { content: '＋'; float: right; color: var(--os-pink-dark); font-weight: 900; }
.onesong .os-faq-item[open] summary::after { content: '－'; }
.onesong .os-faq-item p { margin: 12px 0 0; line-height: 1.9; font-size: 15px; color: var(--os-text-light); }

/* =========================
   Embed / Audio
========================= */
.onesong .os-embed { border-radius: 16px; overflow: hidden; box-shadow: 0 8px 20px rgba(0,0,0,0.04); }
.onesong audio { border-radius: 12px; }

/* =========================
   CTA Section
========================= */
.onesong .os-cta-section {
  text-align: center; padding: 100px 0 120px;
  position: relative; overflow: hidden;
  background: linear-gradient(180deg, var(--os-cream), var(--os-pink-pale));
}

.onesong .os-cta-section__title {
  font-family: var(--os-font-display);
  font-size: clamp(26px, 4vw, 40px);
  font-weight: 400; color: var(--os-charcoal);
  margin-bottom: 14px; letter-spacing: 0.06em;
  position: relative;
}

.onesong .os-cta-section__sub { font-size: 16px; color: var(--os-text-light); margin-bottom: 36px; line-height: 1.9; font-weight: 300; position: relative; }

/* =========================
   Inquiry Box
========================= */
.onesong .os-inquiry-box {
  background: var(--os-white); border-radius: 28px;
  padding: 48px 36px; box-shadow: 0 16px 40px rgba(0,0,0,0.04);
  max-width: 700px; margin: 0 auto;
}

/* =========================
   SONORY Brand Footer
========================= */
.onesong .os-sonory {
  text-align: center;
  padding: 20px 0 0;
  margin-top: 16px;
  border-top: 1px solid rgba(0,0,0,0.04);
  font-size: 12px;
  color: var(--os-text-light);
  opacity: 0.6;
}

.onesong .os-sonory strong {
  font-weight: 700;
  letter-spacing: 0.1em;
}

/* =========================
   Scroll Reveal
========================= */
.onesong .os-reveal { opacity: 0; transform: translateY(28px); transition: all 0.7s var(--os-ease); }
.onesong .os-reveal.is-visible { opacity: 1; transform: translateY(0); }
.onesong .os-reveal-d1 { transition-delay: 0.1s; }
.onesong .os-reveal-d2 { transition-delay: 0.2s; }
.onesong .os-reveal-d3 { transition-delay: 0.3s; }
.onesong .os-reveal-d4 { transition-delay: 0.4s; }

/* =========================
   Fixed CTA
========================= */
.os-fixed-cta {
  position: fixed; left: 0; right: 0; bottom: 0;
  z-index: 9999; display: flex; gap: 10px; padding: 12px 16px;
  background: rgba(253,248,245,0.94);
  backdrop-filter: saturate(180%) blur(14px);
  border-top: 1px solid rgba(232,164,184,0.2);
  opacity: 0; transform: translateY(10px); pointer-events: none;
  transition: opacity 0.25s ease, transform 0.25s ease;
}
.os-fixed-cta.is-visible { opacity: 1; transform: translateY(0); pointer-events: auto; }

.os-fixed-inner { display: flex; gap: 12px; align-items: center; justify-content: space-between; width: 100%; max-width: 1100px; margin: 0 auto; }
.os-fixed-text { margin: 0; font-weight: 700; font-size: 14px; line-height: 1.3; color: var(--os-charcoal); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; flex: 1; min-width: 0; }
.os-fixed-actions { display: flex; gap: 10px; align-items: center; flex-shrink: 0; }
.os-fixed-btn { text-align: center; border-radius: 14px; padding: 13px 16px; font-weight: 700; font-size: 13px; text-decoration: none; border: 1px solid rgba(0,0,0,0.1); transition: all 0.3s; white-space: nowrap; flex-shrink: 0; }
.os-fixed-btn-primary { background: var(--os-charcoal); color: #fff; border-color: var(--os-charcoal); }
.os-fixed-btn-primary:hover { background: var(--os-rose); border-color: var(--os-rose); }
.os-fixed-btn-ghost { background: transparent; color: var(--os-charcoal); }

/* =========================
   Header
========================= */
.os-header {
  position: sticky; top: 0; z-index: 1000;
  background: rgba(253,248,245,0.88);
  backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid rgba(200,122,148,0.08);
  transition: box-shadow 0.4s var(--os-ease);
}
.os-header.scrolled { box-shadow: 0 4px 30px rgba(0,0,0,0.05); }

.os-header__inner { max-width: 1200px; margin: 0 auto; padding: 12px 20px; display: flex; align-items: center; justify-content: space-between; gap: 16px; }

.os-logo { display: flex; align-items: center; gap: 10px; text-decoration: none; color: inherit; }
.os-logo__mark { width: 36px; height: 36px; display: grid; place-items: center; border-radius: 10px; background: linear-gradient(135deg, var(--os-pink-mid), var(--os-rose)); color: #fff; font-size: 16px; font-weight: 700; box-shadow: 0 4px 12px rgba(142,67,96,0.25); }
.os-logo__name { display: block; font-family: var(--os-font-display); font-weight: 600; font-size: 18px; letter-spacing: 0.1em; }
.os-logo__sub { display: block; font-size: 12px; color: var(--os-text-light); margin-top: 1px; }

.os-nav { display: flex; gap: 6px; align-items: center; }
.os-nav__link { text-decoration: none; font-size: 14px; font-weight: 500; opacity: 0.8; padding: 8px 12px; border-radius: 999px; color: inherit; transition: all 0.25s; }
.os-nav__link:hover, .os-nav__link.is-active { background: rgba(232,164,184,0.12); opacity: 1; color: var(--os-rose); }

.os-header__cta { display: flex; gap: 10px; align-items: center; }
.os-hbtn { display: inline-flex; align-items: center; justify-content: center; height: 38px; padding: 0 16px; border-radius: 999px; text-decoration: none; font-weight: 700; font-size: 14px; color: inherit; transition: all 0.3s; }
.os-hbtn--primary { background: var(--os-charcoal); color: #fff; border: none; box-shadow: 0 4px 14px rgba(0,0,0,0.15); }
.os-hbtn--primary:hover { background: var(--os-rose); box-shadow: 0 6px 20px rgba(142,67,96,0.3); }
.os-hbtn--ghost { background: transparent; border: 1px solid rgba(0,0,0,0.12); }

.os-burger { width: 40px; height: 40px; border-radius: 12px; border: 1px solid rgba(0,0,0,0.08); background: rgba(255,255,255,0.7); display: none; position: relative; cursor: pointer; }
.os-burger span { position: absolute; left: 10px; right: 10px; height: 2px; background: var(--os-charcoal); border-radius: 2px; }
.os-burger span:nth-child(1) { top: 13px; }
.os-burger span:nth-child(2) { top: 19px; opacity: 0.7; }
.os-burger span:nth-child(3) { top: 25px; opacity: 0.5; }

.os-drawer { border-top: 1px solid rgba(0,0,0,0.04); background: rgba(253,248,245,0.97); backdrop-filter: blur(12px); }
.os-drawer__inner { max-width: 1100px; margin: 0 auto; padding: 14px 20px 20px; display: grid; gap: 8px; }
.os-drawer__link { display: block; padding: 12px 14px; border-radius: 14px; text-decoration: none; background: rgba(0,0,0,0.02); color: inherit; font-size: 15px; transition: background 0.2s; }
.os-drawer__link:hover, .os-drawer__link.is-active { background: rgba(232,164,184,0.1); }
.os-drawer__note { opacity: 0.6; padding: 8px 4px 0; font-size: 13px; }

/* =========================
   Footer
========================= */
.os-footer {
  background: var(--os-charcoal); color: rgba(255,255,255,0.85); padding: 50px 0 36px;
}
.os-footer__inner { max-width: 1100px; margin: 0 auto; padding: 0 24px; }
.os-footer__top { display: flex; align-items: flex-start; justify-content: space-between; gap: 30px; flex-wrap: wrap; padding-bottom: 32px; border-bottom: 1px solid rgba(255,255,255,0.12); }
.os-footer__name { font-family: var(--os-font-display); font-weight: 600; font-size: 20px; letter-spacing: 0.1em; color: #fff; }
.os-footer__tag { font-size: 13px; opacity: 0.6; margin-top: 4px; color: rgba(255,255,255,0.7); }

.os-footer__cta { display: flex; gap: 10px; flex-wrap: wrap; }
.os-fbtn { display: inline-flex; align-items: center; justify-content: center; height: 40px; padding: 0 18px; border-radius: 999px; text-decoration: none; font-weight: 700; font-size: 14px; transition: all 0.3s; }
.os-fbtn--primary { background: rgba(255,255,255,0.12); color: #fff; border: 1px solid rgba(255,255,255,0.15); }
.os-fbtn--primary:hover { background: var(--os-rose); border-color: var(--os-rose); }
.os-fbtn--ghost { background: transparent; border: 1px solid rgba(255,255,255,0.12); color: rgba(255,255,255,0.7); }
.os-fbtn--ghost:hover { border-color: rgba(255,255,255,0.3); color: #fff; }

.os-footer__nav { margin-top: 24px; display: flex; gap: 18px; flex-wrap: wrap; }
.os-footer__nav a { text-decoration: none; color: rgba(255,255,255,0.7); font-size: 14px; transition: color 0.2s; }
.os-footer__nav a:hover { color: #fff; }
.os-footer__meta { margin-top: 24px; display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; font-size: 12px; opacity: 0.5; color: rgba(255,255,255,0.7); }

/* =========================
   BUSINESS THEME OVERRIDES
========================= */
.onesong-business {
  --os-pink-pale: var(--os-blue-pale);
  --os-pink-light: var(--os-blue-light);
  --os-pink: var(--os-blue);
  --os-pink-mid: var(--os-blue-mid);
  --os-pink-dark: var(--os-blue-dark);
  --os-rose: var(--os-navy);
  --os-rose-deep: #0f2238;
  background: #f8fafD;
}

.onesong-business .os-hero {
  background:
    radial-gradient(ellipse 80% 60% at 20% 40%, rgba(74,127,184,0.12), transparent),
    radial-gradient(ellipse 60% 50% at 80% 30%, rgba(238,243,250,0.6), transparent),
    linear-gradient(180deg, var(--os-blue-pale) 0%, #f8fafd 70%);
}

.onesong-business .os-hero::after {
  background: linear-gradient(to top, #f8fafd, transparent);
}

.onesong-business .os-section-muted { background: var(--os-blue-pale); }
.onesong-business .os-cta-section { background: linear-gradient(180deg, #f8fafd, var(--os-blue-pale)); }
.onesong-business .os-voice-avatar { background: linear-gradient(135deg, var(--os-blue-light), var(--os-blue-mid)); }
.onesong-business .os-logo__mark { background: linear-gradient(135deg, var(--os-blue-mid), var(--os-navy)); }

/* =========================
   Responsive
========================= */
@media (max-width: 1100px) {
  .onesong .os-usecase-grid { grid-template-columns: repeat(2, 1fr); }
  .onesong .os-usecase-grid--compact { grid-template-columns: repeat(3, 1fr); }
  .onesong .os-value-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 960px) {
  .onesong .os-hero--split .os-inner { grid-template-columns: 1fr; gap: 36px; }
  .onesong .os-hero__visual { order: -1; max-width: 380px; margin: 0 auto; }
  .onesong .os-voice-item { grid-template-columns: 1fr; gap: 28px; }
  .onesong .os-voice-item--reverse { direction: ltr; }
  .onesong .os-grid3 { grid-template-columns: 1fr; max-width: 420px; margin-left: auto; margin-right: auto; }
  .onesong .os-plan-card--featured { transform: none; }
  .onesong .os-plan-card--featured:hover { transform: translateY(-4px); }
  .onesong .os-flow-timeline { grid-template-columns: 1fr 1fr; }
  .onesong .os-flow-timeline::before { display: none; }
  .onesong .os-interview-card { grid-template-columns: 1fr; }
  .onesong .os-interview-card__photo { aspect-ratio: 16/9; }
  .onesong .os-case-card { grid-template-columns: 1fr; }
  .onesong .os-case-card--reverse .os-case-card__img { order: unset; }
  .onesong .os-case-card--reverse .os-case-card__body { order: unset; }
  .onesong .os-options-grid { grid-template-columns: 1fr; }
  .onesong .os-option-card--featured { grid-column: span 1; }
}

@media (max-width: 860px) {
  .onesong .os-grid2 { grid-template-columns: 1fr; }
  .onesong .os-usecase-grid--compact { grid-template-columns: repeat(2, 1fr); }
  .onesong .os-value-grid { grid-template-columns: 1fr; max-width: 400px; margin-left: auto; margin-right: auto; }
  .os-nav { display: none; }
  .os-hbtn--ghost { display: none; }
  .os-burger { display: inline-block; }
}

@media (max-width: 640px) {
  .onesong .os-section { padding: 64px 0; }
  .onesong .os-hero { padding: 100px 0 64px; }
  .onesong .os-hero-tight { padding: 100px 0 56px; }
  .onesong .os-btn { width: 100%; }
  .onesong .os-usecase-grid { grid-template-columns: 1fr; max-width: 360px; margin-left: auto; margin-right: auto; }
  .onesong .os-usecase-grid--compact { grid-template-columns: 1fr; }
  .onesong .os-flow-timeline { grid-template-columns: 1fr; }
  .onesong .os-hero__badge { display: none; }
  .onesong .os-section-header { margin-bottom: 40px; }
  .os-footer__top { flex-direction: column; gap: 20px; }
  .os-fixed-inner { flex-direction: column; align-items: stretch; }
  .os-fixed-actions { width: 100%; }

  /* Mobile text fixes */
  .onesong .os-title { font-size: 28px; }
  .onesong .os-title br { display: none; }
  .onesong .os-lead { font-size: 15px; line-height: 1.9; }
  .onesong .os-lead br { display: none; }
  .onesong .os-decl-lead { font-size: 20px; }
  .onesong .os-decl-lead br { display: none; }
  .onesong .os-text br { display: none; }

  /* Card head stacking */
  .onesong .os-card-head { flex-direction: column; gap: 6px; }
  .onesong .os-price { font-size: 20px; }
  .onesong .os-plan-card__price { font-size: 24px; }

  /* Option cards */
  .onesong .os-option-card { padding: 20px 18px; }
  .onesong .os-option-card__img { height: 140px; }

  /* Case cards */
  .onesong .os-case-card__img { min-height: 200px; }
  .onesong .os-case-card__body { padding: 24px 20px; }

  /* Fixed CTA - prevent wrapping */
  .os-fixed-cta { padding: 10px 14px; }
  .os-fixed-btn { font-size: 12px; padding: 11px 10px; white-space: nowrap; }

  /* Section spacing mobile */
  .onesong .os-section-header__title { font-size: 22px; }
  .onesong .os-cta-section__title { font-size: 24px; }

  /* Inquiry box */
  .onesong .os-inquiry-box { padding: 32px 22px; }

  /* Quote */
  .onesong .os-quote { padding: 20px 18px; }

  /* Footer */
  .os-footer__nav { gap: 12px; }
  .os-footer__nav a { font-size: 13px; }
}

/* Extra small */
@media (max-width: 380px) {
  .onesong .os-inner { padding: 0 16px; }
  .onesong .os-title { font-size: 24px; }
  .onesong .os-card { padding: 20px 16px; }
  .os-fixed-btn { font-size: 11px; padding: 10px 8px; }
}

@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,400;0,600;1,400&family=DM+Sans:wght@400;500;700&family=Noto+Sans+JP:wght@300;400;500;700;900&display=swap');

/* =========================
   Campaign Banner
========================= */
.os-campaign {
  background: linear-gradient(135deg, var(--os-rose-deep), var(--os-pink-mid));
  color: #fff;
  text-align: center;
  padding: 18px 24px;
  position: relative;
  overflow: hidden;
}

.os-campaign::before {
  content: '🌸';
  position: absolute;
  left: 10%;
  top: 50%;
  transform: translateY(-50%);
  font-size: 32px;
  opacity: 0.2;
}

.os-campaign::after {
  content: '🌸';
  position: absolute;
  right: 10%;
  top: 50%;
  transform: translateY(-50%);
  font-size: 32px;
  opacity: 0.2;
}

.os-campaign__title {
  font-family: var(--os-font-display);
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 0.06em;
  margin-bottom: 4px;
}

.os-campaign__sub {
  font-size: 14px;
  opacity: 0.85;
  margin: 0;
}

.os-campaign__sub strong {
  font-weight: 900;
  color: #fff;
  opacity: 1;
}

/* =========================
   Feature Boxes (Service Highlights)
========================= */
.onesong .os-feature-box {
  background: var(--os-white);
  border-radius: 24px;
  padding: 32px 28px;
  border: 1px solid rgba(232,164,184,0.15);
  box-shadow: 0 12px 30px rgba(0,0,0,0.04);
  position: relative;
  overflow: hidden;
  transition: all 0.4s var(--os-ease);
}

.onesong .os-feature-box::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 4px; height: 100%;
  background: linear-gradient(180deg, var(--os-pink-mid), var(--os-rose));
  opacity: 0;
  transition: opacity 0.3s;
}

.onesong .os-feature-box:hover {
  transform: translateY(-3px);
  box-shadow: 0 18px 40px rgba(0,0,0,0.06);
}

.onesong .os-feature-box:hover::before { opacity: 1; }

.onesong .os-feature-box__icon {
  font-size: 36px;
  margin-bottom: 16px;
  display: block;
}

.onesong .os-feature-box__title {
  font-size: 18px;
  font-weight: 700;
  color: var(--os-charcoal);
  margin-bottom: 10px;
}

.onesong .os-feature-box__text {
  font-size: 15px;
  line-height: 1.9;
  color: var(--os-text-light);
  margin: 0;
}

.onesong .os-feature-box-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

/* =========================
   Step Flow (HOW IT WORKS)
========================= */
.onesong .os-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  position: relative;
  max-width: 880px;
  margin: 0 auto;
}

/* Connecting line */
.onesong .os-steps__line {
  position: absolute;
  top: 32px;
  left: calc(16.666% + 28px);
  right: calc(16.666% + 28px);
  height: 1px;
  background: rgba(212,114,143,0.15);
  z-index: 0;
}

.onesong .os-step-item {
  text-align: center;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

.onesong .os-step-item__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--os-pink-pale);
  border: none;
  font-family: 'Cormorant Garamond', serif;
  font-size: 20px;
  font-weight: 400;
  color: var(--os-pink-mid);
  letter-spacing: 0.06em;
  margin-bottom: 22px;
  transition: all 0.4s var(--os-ease);
}

.onesong .os-step-item:hover .os-step-item__num {
  background: var(--os-pink-mid);
  color: #fff;
  box-shadow: 0 8px 24px rgba(212,114,143,0.15);
  transform: translateY(-2px);
}

.onesong .os-step-item__title {
  font-family: 'Cormorant Garamond', serif;
  font-size: 18px;
  font-weight: 400;
  color: var(--os-charcoal);
  letter-spacing: 0.1em;
  margin: 0 0 4px;
}

.onesong .os-step-item__sub {
  font-size: 11px;
  color: var(--os-text-light);
  margin: 0 0 16px;
  letter-spacing: 0.06em;
}

.onesong .os-step-item__text {
  font-size: 13px;
  line-height: 2;
  color: var(--os-text-light);
  margin: 0;
}

/* =========================
   1人1歌宣言 Badge
========================= */
.os-declaration-badge {
  text-align: center;
  padding: 48px 24px 24px;
  position: relative;
}

.os-declaration-badge__mark {
  display: inline-block;
  font-family: var(--os-font-display);
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 600;
  letter-spacing: 0.15em;
  color: var(--os-charcoal);
  padding: 16px 40px;
  border: 2px solid var(--os-charcoal);
  border-radius: 8px;
  position: relative;
}

.os-declaration-badge__mark::after {
  content: 'ONE SONG';
  position: absolute;
  bottom: -10px; left: 50%;
  transform: translateX(-50%);
  background: var(--os-cream);
  padding: 0 16px;
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--os-pink-dark);
  font-weight: 600;
}

/* =========================
   Life Album Track List
========================= */
.os-tracklist {
  list-style: none;
  padding: 0;
  margin: 16px 0;
  counter-reset: track;
}

.os-tracklist li {
  counter-increment: track;
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid rgba(0,0,0,0.04);
  font-size: 15px;
  line-height: 1.6;
}

.os-tracklist li::before {
  content: counter(track, decimal-leading-zero);
  font-family: var(--os-font-number);
  font-size: 18px;
  font-weight: 600;
  color: var(--os-pink-mid);
  min-width: 28px;
}

.os-tracklist__title { font-weight: 700; color: var(--os-charcoal); }
.os-tracklist__desc { font-size: 13px; color: var(--os-text-light); margin-left: 4px; }

/* Tracklist inside dark card */
.onesong .os-option-card--featured .os-tracklist li {
  border-bottom-color: rgba(255,255,255,0.08);
}
.onesong .os-option-card--featured .os-tracklist li::before {
  color: var(--os-pink-light);
}
.onesong .os-option-card--featured .os-tracklist__title {
  color: #fff;
}
.onesong .os-option-card--featured .os-tracklist__desc {
  color: rgba(255,255,255,0.55);
}

/* =========================
   Responsive additions v4
========================= */
@media (max-width: 860px) {
  .onesong .os-feature-box-grid { grid-template-columns: 1fr; }
  .os-campaign::before, .os-campaign::after { display: none; }
  .onesong .os-steps { grid-template-columns: 1fr; gap: 36px; max-width: 360px; }
  .onesong .os-steps__line { display: none; }
  .onesong .os-step-item__num { width: 56px; height: 56px; font-size: 18px; margin-bottom: 16px; }
}

/* =========================
   Contact Form
========================= */
.onesong .os-form-group { margin-bottom: 24px; }
.onesong .os-form-label {
  display: block; font-size: 13px; font-weight: 700;
  margin-bottom: 8px; color: var(--os-charcoal);
  letter-spacing: 0.02em;
}
.onesong .os-required {
  display: inline-block;
  color: #fff; background: var(--os-pink-mid);
  font-size: 10px; font-weight: 700;
  padding: 1px 6px; border-radius: 4px;
  margin-left: 6px; vertical-align: middle;
  letter-spacing: 0.04em;
}

.onesong .os-form-input,
.onesong .os-form-select,
.onesong .os-form-textarea {
  width: 100%;
  padding: 14px 16px;
  border: 1.5px solid rgba(0,0,0,0.08);
  border-radius: 12px;
  font-size: 15px;
  font-family: inherit;
  background: var(--os-cream);
  color: var(--os-text);
  transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
  -webkit-appearance: none;
}
.onesong .os-form-input::placeholder,
.onesong .os-form-textarea::placeholder {
  color: rgba(0,0,0,0.25);
}
.onesong .os-form-input:focus,
.onesong .os-form-select:focus,
.onesong .os-form-textarea:focus {
  outline: none;
  border-color: var(--os-pink-mid);
  box-shadow: 0 0 0 3px rgba(212,114,143,0.1);
  background: #fff;
}
.onesong .os-form-textarea { resize: vertical; min-height: 150px; line-height: 1.8; }
.onesong .os-form-select {
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='7'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%232a2a2a' stroke-width='1.5' fill='none'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 40px;
}

/* Two-column row */
.onesong .os-form-row { display: flex; gap: 16px; }
.onesong .os-form-half { flex: 1; min-width: 0; }

/* Radio buttons */
.onesong .os-form-radio-row { display: flex; gap: 14px; flex-wrap: wrap; }
.onesong .os-form-radio {
  display: flex; align-items: center; gap: 12px;
  cursor: pointer; padding: 16px 22px;
  border: 1.5px solid rgba(0,0,0,0.08); border-radius: 14px;
  flex: 1; min-width: 180px;
  transition: all 0.25s var(--os-ease);
  font-size: 14px; font-weight: 500;
  background: var(--os-cream);
}
.onesong .os-form-radio:hover {
  border-color: var(--os-pink); background: rgba(232,164,184,0.06);
}
.onesong .os-form-radio input { display: none; }
.onesong .os-form-radio__mark {
  width: 22px; height: 22px; border-radius: 50%;
  border: 2px solid rgba(0,0,0,0.12);
  position: relative; flex-shrink: 0;
  transition: all 0.25s;
}
.onesong .os-form-radio__mark::after {
  content: ''; position: absolute;
  top: 4px; left: 4px; right: 4px; bottom: 4px;
  border-radius: 50%;
  background: var(--os-pink-mid);
  transform: scale(0); transition: transform 0.25s var(--os-ease-spring);
}
.onesong .os-form-radio input:checked ~ .os-form-radio__mark { border-color: var(--os-pink-mid); }
.onesong .os-form-radio input:checked ~ .os-form-radio__mark::after { transform: scale(1); }
.onesong .os-form-radio input:checked ~ span:last-child { color: var(--os-pink-dark); font-weight: 700; }

/* Section divider inside form */
.onesong .os-form-divider {
  border: none; border-top: 1px solid rgba(0,0,0,0.06);
  margin: 32px 0;
}

/* Step label */
.onesong .os-form-step {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 12px; font-weight: 700;
  color: var(--os-pink-mid); letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 18px;
}
.onesong .os-form-step__num {
  display: inline-flex; align-items: center; justify-content: center;
  width: 24px; height: 24px; border-radius: 50%;
  background: var(--os-pink-mid); color: #fff;
  font-family: var(--os-font-number);
  font-size: 12px; font-weight: 700;
}

/* Submit button override for form */
.onesong .os-form-submit {
  display: block; width: 100%; max-width: 320px;
  margin: 0 auto; padding: 18px 24px;
  background: var(--os-charcoal); color: #fff;
  border: none; border-radius: 16px;
  font-size: 16px; font-weight: 700;
  cursor: pointer;
  transition: all 0.3s var(--os-ease);
  letter-spacing: 0.04em;
}
.onesong .os-form-submit:hover {
  background: var(--os-rose); transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(142,67,96,0.2);
}

/* Form card wrapper */
.onesong .os-form-card {
  background: #fff;
  border-radius: 24px;
  padding: 44px 40px;
  box-shadow: 0 4px 32px rgba(0,0,0,0.04);
  border: 1px solid rgba(0,0,0,0.04);
}

/* Info strip */
.onesong .os-form-info {
  display: flex; gap: 24px; flex-wrap: wrap;
  padding: 20px 24px; border-radius: 14px;
  background: var(--os-pink-pale);
  margin-bottom: 12px;
  font-size: 13px; color: var(--os-text-light);
  line-height: 1.7;
}
.onesong .os-form-info__item {
  display: flex; align-items: center; gap: 8px;
}

/* Mobile form */
@media (max-width: 640px) {
  .onesong .os-form-card { padding: 28px 20px; border-radius: 18px; }
  .onesong .os-form-row { flex-direction: column; gap: 0; }
  .onesong .os-form-radio-row { flex-direction: column; gap: 10px; }
  .onesong .os-form-radio { min-width: 0; padding: 14px 18px; }
  .onesong .os-form-info { flex-direction: column; gap: 10px; }
}