:root {
  --bg: #fffefb;
  --surface: #ffffff;
  --ink: #2b2622;
  --ink-soft: #6f655d;
  --line: #ece5db;
  --primary: #2b6cb0;
  --secondary: #917467;
  --accent: #c9a96e;
  --radius: 16px;
  --shadow: 0 1px 2px rgba(40, 30, 20, .04), 0 8px 28px rgba(120, 90, 60, .06);
  --maxw: 760px;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Yu Gothic", Meiryo, sans-serif;
  line-height: 1.85;
  font-size: 16px;
  letter-spacing: .01em;
}

a { color: var(--primary); text-underline-offset: 3px; }

.wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 22px;
}

/* Header */
.site-header {
  border-bottom: 1px solid var(--line);
  background: rgba(255, 254, 251, .85);
  backdrop-filter: saturate(1.4) blur(8px);
  position: sticky;
  top: 0;
  z-index: 10;
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: .02em;
}
.brand .dot {
  width: 12px; height: 12px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--secondary));
}
.nav { display: flex; gap: 20px; font-size: 14px; }
.nav a { color: var(--ink-soft); text-decoration: none; }
.nav a:hover { color: var(--ink); }

/* Hero */
.hero {
  text-align: center;
  padding: 76px 0 56px;
}
.hero .eyebrow {
  display: inline-block;
  font-size: 12px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 18px;
  font-weight: 600;
}
.hero h1 {
  font-size: clamp(30px, 6vw, 46px);
  line-height: 1.25;
  margin: 0 0 18px;
  font-weight: 800;
  letter-spacing: .01em;
}
.hero p {
  color: var(--ink-soft);
  font-size: 17px;
  max-width: 540px;
  margin: 0 auto;
}

/* Cards */
.cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  margin: 44px 0 8px;
}
@media (max-width: 600px) { .cards { grid-template-columns: 1fr; } }
.card {
  display: block;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px 24px;
  text-decoration: none;
  color: var(--ink);
  box-shadow: var(--shadow);
  transition: transform .18s ease, box-shadow .18s ease;
}
.card:hover { transform: translateY(-2px); box-shadow: 0 10px 34px rgba(120, 90, 60, .12); }
.card h3 { margin: 0 0 6px; font-size: 18px; }
.card p { margin: 0; color: var(--ink-soft); font-size: 14px; }
.card .arrow { color: var(--accent); font-weight: 700; margin-top: 14px; display: inline-block; font-size: 14px; }

/* Article (privacy / support) */
.page-head { padding: 56px 0 8px; }
.page-head .eyebrow {
  font-size: 12px; letter-spacing: .2em; text-transform: uppercase;
  color: var(--accent); font-weight: 600;
}
.page-head h1 { font-size: clamp(26px, 5vw, 36px); margin: 12px 0 8px; font-weight: 800; }
.page-head .meta { color: var(--ink-soft); font-size: 13px; }

article { padding-bottom: 64px; }
article h2 {
  font-size: 20px;
  margin: 40px 0 12px;
  padding-top: 14px;
  font-weight: 700;
  border-top: 1px solid var(--line);
}
article h2:first-of-type { border-top: none; padding-top: 0; }
article h3 { font-size: 16px; margin: 22px 0 6px; color: var(--secondary); }
article p, article li { color: #3c352f; }
article ul { padding-left: 1.2em; }
article li { margin: 6px 0; }
article strong { color: var(--ink); }

.callout {
  background: #fbf7ef;
  border: 1px solid #efe4cf;
  border-radius: 12px;
  padding: 16px 18px;
  margin: 22px 0;
  font-size: 15px;
}
.callout strong { color: var(--secondary); }

.contact-box {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
  margin: 18px 0;
}
.contact-box .email {
  font-size: 19px;
  font-weight: 700;
  color: var(--primary);
  word-break: break-all;
}

/* FAQ */
.faq details {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface);
  margin: 10px 0;
  overflow: hidden;
}
.faq summary {
  cursor: pointer;
  padding: 16px 18px;
  font-weight: 600;
  list-style: none;
  position: relative;
  padding-right: 44px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  position: absolute;
  right: 18px; top: 50%;
  transform: translateY(-50%);
  color: var(--accent);
  font-size: 20px;
  font-weight: 400;
}
.faq details[open] summary::after { content: "–"; }
.faq .answer { padding: 0 18px 16px; color: var(--ink-soft); font-size: 15px; }
.faq .answer a { color: var(--primary); }

/* Footer */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 30px 0 48px;
  margin-top: 24px;
  font-size: 13px;
  color: var(--ink-soft);
}
.site-footer .wrap { display: flex; flex-wrap: wrap; gap: 8px 20px; align-items: center; justify-content: space-between; }
.site-footer .nav a { color: var(--ink-soft); }
.site-footer .copy { color: #a99e92; }
.back-link { display: inline-block; margin: 8px 0 0; font-size: 14px; text-decoration: none; color: var(--ink-soft); }
.back-link:hover { color: var(--ink); }