*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --pink: #ff5fa0;
  --pink-light: #ff8ab8;
  --pink-pale: #fff0f7;
  --pink-border: #ffd6e8;
  --purple-pale: #f5f0ff;
  --dark: #2d1a2e;
  --gray: #777;
  --gray-light: #bbb;
}
html { scroll-behavior: smooth; }
body { font-family: 'Noto Sans JP', sans-serif; font-size: 16px; color: var(--dark); background: #fff; }

/* NAV */
.nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--pink-border);
  padding: 0 24px;
  display: flex; align-items: center; justify-content: space-between;
  height: 60px;
}
.nav-logo { font-size: 17px; font-weight: 700; color: var(--dark); text-decoration: none; display: flex; align-items: center; }
.nav-logo span { color: var(--pink); }
.nav-logo img { height: 40px; width: auto; display: block; }
.nav-links { display: flex; gap: 24px; list-style: none; }
.nav-links a { font-size: 13px; color: var(--gray); text-decoration: none; transition: color .2s; }
.nav-links a:hover, .nav-links a.active { color: var(--pink); font-weight: 700; }
.nav-cta {
  background: var(--pink); color: #fff; border: none;
  border-radius: 24px; padding: 8px 18px; font-size: 13px;
  font-weight: 700; cursor: pointer; text-decoration: none;
  transition: opacity .2s; white-space: nowrap;
}
.nav-cta:hover { opacity: .85; }
.nav-hamburger { display: none; background: none; border: none; cursor: pointer; padding: 4px; flex-direction: column; gap: 5px; }
.nav-hamburger span { display: block; width: 22px; height: 2px; background: var(--dark); border-radius: 2px; }

/* PAGE HEADER */
.page-header {
  background: linear-gradient(140deg, var(--pink-pale) 0%, #fff 50%, var(--purple-pale) 100%);
  padding: 56px 24px 48px; text-align: center;
}
.page-header .section-label { margin-bottom: 10px; }
.page-header h1 { font-size: clamp(22px, 4vw, 32px); font-weight: 700; }
.page-header h1 span { color: var(--pink); }
.page-header p { font-size: 14px; color: var(--gray); margin-top: 12px; line-height: 1.8; }

/* SECTIONS */
section { padding: 64px 24px; }
.container { max-width: 960px; margin: 0 auto; }
.section-label {
  font-size: 11px; font-weight: 700; color: var(--pink);
  letter-spacing: .12em; text-transform: uppercase; margin-bottom: 8px;
}
.section-title { font-size: 22px; font-weight: 700; line-height: 1.4; margin-bottom: 32px; }
.section-title span { color: var(--pink); }

/* BUTTONS */
.btn-primary {
  background: var(--pink); color: #fff; border: none;
  border-radius: 28px; padding: 14px 32px; font-size: 15px;
  font-weight: 700; cursor: pointer; text-decoration: none;
  transition: transform .15s, opacity .15s;
  display: inline-flex; align-items: center; gap: 6px;
}
.btn-primary:hover { opacity: .88; transform: translateY(-2px); }
.btn-outline {
  background: #fff; color: var(--pink);
  border: 1.5px solid var(--pink);
  border-radius: 28px; padding: 13px 28px; font-size: 15px;
  font-weight: 500; cursor: pointer; text-decoration: none;
  transition: transform .15s, background .15s;
  display: inline-flex; align-items: center; gap: 6px;
}
.btn-outline:hover { background: var(--pink-pale); transform: translateY(-2px); }
.btn-white {
  background: #fff; color: var(--pink); border: none;
  border-radius: 28px; padding: 15px 36px; font-size: 15px;
  font-weight: 700; cursor: pointer; text-decoration: none;
  transition: transform .15s; display: inline-block;
}
.btn-white:hover { transform: translateY(-2px); }

/* CTA SECTION */
.cta-section {
  background: linear-gradient(135deg, #ff5fa0 0%, #ff8ab8 100%);
  text-align: center; padding: 72px 24px;
}
.cta-section h2 { font-size: 24px; font-weight: 700; color: #fff; margin-bottom: 10px; }
.cta-section p { font-size: 14px; color: rgba(255,255,255,.9); line-height: 1.8; margin-bottom: 28px; }

/* FOOTER */
footer { background: var(--dark); color: rgba(255,255,255,.5); padding: 40px 24px 28px; }
.footer-inner { max-width: 960px; margin: 0 auto; }
.footer-logo { font-size: 16px; font-weight: 700; color: #ffb3d4; margin-bottom: 16px; }
.footer-logo img { height: 56px; width: auto; display: block; }
.footer-nav { display: flex; flex-wrap: wrap; gap: 8px 20px; margin-bottom: 24px; }
.footer-nav a { font-size: 12px; color: rgba(255,255,255,.45); text-decoration: none; transition: color .2s; }
.footer-nav a:hover { color: #ffb3d4; }
.footer-copy { font-size: 11px; border-top: 1px solid rgba(255,255,255,.1); padding-top: 16px; }

/* MOBILE */
@media (max-width: 640px) {
  .nav-links { display: none; }
  .nav-cta { display: none; }
  .nav-hamburger { display: flex; }
  .nav.open .nav-links {
    display: flex; flex-direction: column;
    position: absolute; top: 60px; left: 0; right: 0;
    background: #fff; border-bottom: 1px solid var(--pink-border);
    padding: 8px 0; gap: 0;
  }
  .nav.open .nav-links a { padding: 13px 24px; display: block; }
  /* メニュー展開時はCTAも出す（モバイルで問い合わせ導線が消えるのを防ぐ） */
  .nav.open .nav-cta {
    display: block; position: absolute; top: 300px; left: 16px; right: 16px;
    text-align: center; padding: 13px 16px; z-index: 60;
  }
  .nav-logo img { height: 34px; }
  section { padding: 48px 20px; }
}


/* ===== SISTER SITE ===== */
.sister-strip { padding: 8px 24px 60px; }
.sister-card {
  max-width: 960px; margin: 0 auto;
  display: flex; align-items: center; gap: 18px;
  background: linear-gradient(135deg, var(--pink-pale), #fff);
  border: 1.5px solid var(--pink-border); border-radius: 20px;
  padding: 22px 26px; text-decoration: none; color: var(--dark);
  transition: transform .15s, box-shadow .15s;
}
.sister-card:hover { transform: translateY(-3px); box-shadow: 0 12px 30px rgba(255,95,160,.18); }
.sister-card .sis-emoji { font-size: 34px; flex: none; }
.sister-card .sis-body { flex: 1; display: flex; flex-direction: column; }
.sister-card .sis-eyebrow { font-size: 11px; font-weight: 700; color: var(--pink); letter-spacing: .1em; }
.sister-card .sis-body b { font-size: 18px; font-weight: 700; }
.sister-card .sis-body small { font-size: 12.5px; color: var(--gray); margin-top: 3px; line-height: 1.6; }
.sister-card .sis-go { flex: none; background: var(--pink); color: #fff; font-size: 13px; font-weight: 700; border-radius: 24px; padding: 9px 18px; white-space: nowrap; }
.footer-nav a.sister-link { color: #ffb3d4; font-weight: 700; }
@media (max-width: 640px) {
  .sister-card { flex-direction: column; text-align: center; }
  .sister-card .sis-go { width: 100%; }
}