:root {
  --accent: #b6766c;
  --accent-dark: #9c5f56;
  --accent-soft: #f3e4e0;
  --cream: #f5f0e8;
  --text: #333333;
  --text-sub: #777777;
  --white: #ffffff;
  --radius-card: 16px;
  --radius-section: 56px;
  --max-width: 960px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
  color: var(--text);
  background: var(--white);
  line-height: 1.9;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--accent);
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid #eee;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 16px;
}

.brand {
  font-weight: 700;
  font-size: 18px;
  color: var(--text);
  text-decoration: none;
  white-space: nowrap;
}

.nav {
  display: flex;
  align-items: center;
  gap: 22px;
}

.nav a {
  color: var(--text);
  text-decoration: none;
  font-size: 14px;
}

.nav a:hover {
  color: var(--accent);
}

.btn {
  display: inline-block;
  background: var(--accent);
  color: var(--white);
  text-decoration: none;
  font-weight: 700;
  padding: 12px 28px;
  border-radius: 999px;
  transition: background 0.2s;
}

.btn:hover {
  background: var(--accent-dark);
}

.btn.small {
  padding: 8px 20px;
  font-size: 14px;
}

/* Hero */
.hero {
  background: var(--cream);
  border-radius: 0 0 var(--radius-section) var(--radius-section);
  overflow: hidden;
  position: relative;
}

.hero .container {
  padding: 96px 24px 88px;
  position: relative;
  z-index: 1;
  text-align: center;
}

.hero::before,
.hero::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  background: var(--accent-soft);
}

.hero::before {
  width: 320px;
  height: 320px;
  top: -120px;
  left: -100px;
}

.hero::after {
  width: 240px;
  height: 240px;
  bottom: -100px;
  right: -60px;
}

.chip {
  display: inline-block;
  background: var(--accent);
  color: var(--white);
  font-size: 14px;
  font-weight: 700;
  padding: 4px 16px;
  border-radius: 8px;
  margin-bottom: 20px;
}

.hero h1 {
  font-size: clamp(26px, 4.5vw, 40px);
  font-weight: 700;
  line-height: 1.6;
  margin-bottom: 16px;
}

.hero .hero-sub {
  font-size: clamp(18px, 2.6vw, 24px);
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 32px;
}

.hero .note {
  font-size: 14px;
  color: var(--text-sub);
  margin-top: 16px;
}

/* Sections */
section {
  padding: 80px 0;
}

.section-head {
  text-align: center;
  margin-bottom: 48px;
}

.section-head::before {
  content: "";
  display: block;
  width: 28px;
  height: 4px;
  background: var(--accent);
  border-radius: 2px;
  margin: 0 auto 16px;
}

.section-head h2 {
  color: var(--accent);
  font-size: 26px;
  font-weight: 700;
}

.section-head .en {
  display: block;
  font-size: 12px;
  color: var(--text-sub);
  letter-spacing: 0.08em;
  margin-top: 4px;
}

.section-cream {
  background: var(--cream);
  border-radius: var(--radius-section) 0 var(--radius-section) 0;
}

.lead {
  max-width: 680px;
  margin: 0 auto;
  text-align: left;
}

/* Cards */
.card {
  background: var(--white);
  border-radius: var(--radius-card);
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.06);
  padding: 32px;
}

.treatment-card {
  max-width: 560px;
  margin: 0 auto;
  text-align: center;
}

.treatment-card .icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--accent-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  color: var(--accent);
}

.treatment-card h3 {
  color: var(--accent);
  font-size: 20px;
  margin-bottom: 4px;
}

.treatment-card h3::after {
  content: "";
  display: block;
  width: 48px;
  height: 1px;
  background: var(--accent);
  margin: 12px auto 16px;
}

.partner-link {
  display: block;
  margin-top: 20px;
  font-size: 14px;
}

/* Flow */
.flow {
  max-width: 640px;
  margin: 0 auto;
  list-style: none;
  counter-reset: step;
}

.flow li {
  position: relative;
  padding: 20px 24px 20px 76px;
  background: var(--white);
  border-radius: var(--radius-card);
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.06);
  margin-bottom: 16px;
  counter-increment: step;
}

.flow li::before {
  content: counter(step);
  position: absolute;
  left: 20px;
  top: 50%;
  transform: translateY(-50%);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--white);
  font-weight: 700;
  font-size: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.flow li strong {
  display: block;
  color: var(--accent);
}

.flow li small {
  color: var(--text-sub);
}

/* Notes list */
.notes {
  max-width: 680px;
  margin: 0 auto;
  list-style: none;
}

.notes li {
  position: relative;
  padding-left: 28px;
  margin-bottom: 12px;
}

.notes li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 12px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
}

/* Access */
.access-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: start;
}

.access-grid iframe {
  width: 100%;
  height: 300px;
  border: 0;
  border-radius: var(--radius-card);
}

.access-info dt {
  font-weight: 700;
  color: var(--accent);
  margin-top: 16px;
}

.access-info dt:first-child {
  margin-top: 0;
}

/* CTA band */
.cta-band {
  text-align: center;
}

.cta-band p {
  margin-bottom: 24px;
}

/* Footer */
.site-footer {
  background: var(--cream);
  border-radius: var(--radius-section) var(--radius-section) 0 0;
  padding: 56px 0 32px;
  margin-top: 40px;
}

.site-footer .brand {
  display: block;
  margin-bottom: 8px;
}

.footer-info {
  font-size: 14px;
  color: var(--text-sub);
  margin-bottom: 24px;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  margin-bottom: 32px;
}

.footer-nav a {
  color: var(--text);
  text-decoration: none;
  font-size: 14px;
}

.footer-nav a:hover {
  color: var(--accent);
}

.copyright {
  font-size: 12px;
  color: var(--text-sub);
}

/* Legal page */
.legal-body {
  max-width: 720px;
  margin: 0 auto;
  padding: 64px 24px 80px;
}

.legal-body h1 {
  color: var(--accent);
  font-size: 26px;
  margin-bottom: 40px;
  text-align: center;
}

.legal-body h1::before {
  content: "";
  display: block;
  width: 28px;
  height: 4px;
  background: var(--accent);
  border-radius: 2px;
  margin: 0 auto 16px;
}

.legal-body dt {
  font-weight: 700;
  color: var(--accent);
  border-left: 4px solid var(--accent);
  padding-left: 12px;
  margin-top: 32px;
  margin-bottom: 8px;
}

.legal-body dd {
  margin-left: 0;
}

/* Responsive */
@media (max-width: 720px) {
  .nav a:not(.btn) {
    display: none;
  }

  .brand {
    font-size: 16px;
  }

  .nav .btn {
    white-space: nowrap;
    padding: 8px 14px;
    font-size: 13px;
  }

  section {
    padding: 56px 0;
  }

  .hero .container {
    padding: 72px 24px 64px;
  }

  .access-grid {
    grid-template-columns: 1fr;
  }
}

.legal-body h2 {
  color: var(--accent);
  font-size: 18px;
  border-left: 4px solid var(--accent);
  padding-left: 12px;
  margin-top: 40px;
  margin-bottom: 12px;
}

.legal-body p {
  margin-bottom: 12px;
}

.legal-body ul {
  margin: 0 0 16px 1.4em;
}

.legal-body ul li {
  margin-bottom: 4px;
}