@import url('https://fonts.googleapis.com/css2?family=Zen+Kaku+Gothic+New:wght@500;700;900&family=Noto+Sans+JP:wght@400;500;700&display=swap');

:root {
  --bg: #faf9f6;
  --card: #ffffff;
  --ink: #1c2620;
  --ink-soft: #52625a;
  --line: rgba(28, 38, 32, 0.09);
  --teal: #0e7c66;
  --teal-deep: #0a5c4c;
  --teal-wash: rgba(14, 124, 102, 0.09);
  --blue: #3577f1;
  --blue-wash: rgba(53, 119, 241, 0.09);
  --coral: #ff6b57;
  --radius: 20px;
  --radius-sm: 12px;
  --max: 760px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, sans-serif;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, .display {
  font-family: 'Zen Kaku Gothic New', 'Noto Sans JP', sans-serif;
  font-weight: 900;
  letter-spacing: 0.01em;
  color: var(--ink);
}

a { color: var(--teal-deep); }
a:focus-visible, button:focus-visible, summary:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: 2px;
}

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

/* ---------- Nav ---------- */
.nav {
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}
.nav .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-family: 'Zen Kaku Gothic New', sans-serif;
  font-weight: 900;
  font-size: 17px;
  color: var(--ink);
}
.brand-mark {
  width: 30px;
  height: 30px;
  border-radius: 9px;
  background: linear-gradient(155deg, var(--teal) 0%, var(--teal-deep) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 15px;
  font-weight: 900;
  flex-shrink: 0;
}
.nav-links {
  display: flex;
  gap: 22px;
  font-size: 14px;
}
.nav-links a {
  text-decoration: none;
  color: var(--ink-soft);
  font-weight: 500;
}
.nav-links a:hover { color: var(--teal-deep); }

/* ---------- Week strip signature ---------- */
.week-strip {
  display: flex;
  gap: 6px;
  margin: 0 0 28px;
}
.week-strip span {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  background: var(--card);
  border: 1px solid var(--line);
  color: var(--ink-soft);
}
.week-strip span.on {
  background: var(--teal);
  border-color: var(--teal);
  color: #fff;
}
.week-strip span.sun { color: var(--coral); }

/* ---------- Hero ---------- */
.hero { padding: 64px 0 40px; }
.eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  color: var(--teal-deep);
  background: var(--teal-wash);
  padding: 5px 14px;
  border-radius: 100px;
  margin-bottom: 18px;
}
.hero h1 {
  font-size: 40px;
  line-height: 1.35;
  margin: 0 0 18px;
}
.hero h1 em {
  font-style: normal;
  color: var(--teal-deep);
}
.hero p.lead {
  font-size: 16px;
  color: var(--ink-soft);
  max-width: 46ch;
  margin: 0 0 30px;
}
.cta-row { display: flex; gap: 12px; flex-wrap: wrap; }
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 24px;
  border-radius: 100px;
  font-weight: 700;
  font-size: 14.5px;
  text-decoration: none;
  border: 1px solid transparent;
}
.btn-primary { background: var(--ink); color: #fff; }
.btn-primary:hover { background: var(--teal-deep); }
.btn-ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--line);
}
.btn-ghost:hover { border-color: var(--ink); }

/* ---------- Sections ---------- */
section { padding: 46px 0; }
.section-title {
  font-size: 24px;
  margin: 0 0 8px;
}
.section-sub {
  color: var(--ink-soft);
  font-size: 14.5px;
  margin: 0 0 32px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
}
.card .icon {
  width: 40px;
  height: 40px;
  border-radius: 11px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 19px;
  margin-bottom: 14px;
}
.card h3 {
  font-size: 15.5px;
  margin: 0 0 6px;
}
.card p {
  font-size: 13.5px;
  color: var(--ink-soft);
  margin: 0;
  line-height: 1.7;
}
.icon.teal { background: var(--teal-wash); color: var(--teal-deep); }
.icon.blue { background: var(--blue-wash); color: var(--blue); }
.icon.coral { background: rgba(255,107,87,0.1); color: var(--coral); }

/* ---------- Doc pages (privacy / support) ---------- */
.doc-header { padding: 48px 0 8px; }
.doc-header h1 { font-size: 28px; margin: 0 0 10px; }
.doc-meta { color: var(--ink-soft); font-size: 13px; margin: 0 0 30px; }

.doc-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 8px 32px;
  margin-bottom: 56px;
}
.doc-card h2 {
  font-size: 17px;
  margin: 30px 0 10px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}
.doc-card h2:first-of-type { border-top: none; padding-top: 0; margin-top: 26px; }
.doc-card p, .doc-card li { font-size: 14.5px; color: var(--ink-soft); }
.doc-card a { color: var(--teal-deep); }

/* FAQ */
.faq-item {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  margin-bottom: 10px;
  overflow: hidden;
}
.faq-item summary {
  cursor: pointer;
  list-style: none;
  padding: 17px 20px;
  font-weight: 700;
  font-size: 14.5px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '+';
  font-size: 20px;
  font-weight: 400;
  color: var(--ink-soft);
  flex-shrink: 0;
  transition: transform 0.15s ease;
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item .faq-body {
  padding: 0 20px 18px;
  font-size: 13.5px;
  color: var(--ink-soft);
  line-height: 1.75;
  white-space: pre-line;
}

.contact-card {
  background: linear-gradient(155deg, var(--teal) 0%, var(--teal-deep) 100%);
  color: #fff;
  border-radius: var(--radius);
  padding: 28px 26px;
  margin-top: 40px;
}
.contact-card h3 { color: #fff; font-size: 17px; margin: 0 0 8px; }
.contact-card p { color: rgba(255,255,255,0.85); font-size: 13.5px; margin: 0 0 16px; }
.contact-card a {
  color: #fff;
  font-weight: 700;
  background: rgba(255,255,255,0.16);
  padding: 10px 18px;
  border-radius: 100px;
  text-decoration: none;
  font-size: 13.5px;
  display: inline-block;
}

/* ---------- Footer ---------- */
footer {
  border-top: 1px solid var(--line);
  padding: 28px 0 40px;
}
footer .wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}
footer p { font-size: 12.5px; color: var(--ink-soft); margin: 0; }
footer .foot-links { display: flex; gap: 18px; }
footer .foot-links a {
  font-size: 12.5px;
  color: var(--ink-soft);
  text-decoration: none;
}
footer .foot-links a:hover { color: var(--teal-deep); }

@media (max-width: 620px) {
  .hero h1 { font-size: 30px; }
  .grid { grid-template-columns: 1fr; }
  .nav-links { gap: 14px; font-size: 13px; }
  .doc-card { padding: 6px 20px; }
}