:root {
  color-scheme: light;
  --ink: #19303a;
  --muted: #60727a;
  --primary: #20aeb4;
  --primary-dark: #0f8990;
  --accent: #ed786c;
  --surface: #ffffff;
  --background: #fffdf8;
  --line: #e4ecec;
  --radius: 22px;
}

* { box-sizing: border-box; }
html { background: var(--background); }
body { margin: 0; background: var(--background); color: var(--ink); font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", "Noto Sans JP", sans-serif; font-size: 16px; line-height: 1.75; }
a { color: var(--primary-dark); text-underline-offset: 3px; }
a:hover { color: var(--accent); }
.shell { width: min(100% - 40px, 1024px); margin: 0 auto; }
.site-header { padding: 22px 0; }
.brand { display: inline-flex; align-items: center; }
.brand img { display: block; width: min(170px, 46vw); height: auto; }
.site-nav { display: flex; align-items: center; justify-content: space-between; gap: 18px; flex-wrap: wrap; }
.nav-links { display: flex; gap: 18px; flex-wrap: wrap; font-size: 14px; font-weight: 700; }
.nav-links a { text-decoration: none; }
.hero { padding: 72px 0 54px; }
.eyebrow { margin: 0 0 12px; color: var(--primary-dark); font-size: 14px; font-weight: 800; letter-spacing: .08em; }
h1, h2, h3 { color: var(--ink); line-height: 1.25; }
h1 { margin: 0; max-width: 760px; font-size: clamp(36px, 7vw, 68px); letter-spacing: -.04em; }
h2 { margin: 0 0 14px; font-size: clamp(25px, 4vw, 36px); letter-spacing: -.025em; }
h3 { margin: 28px 0 8px; font-size: 19px; }
.lead { max-width: 640px; margin: 22px 0 0; color: var(--muted); font-size: clamp(18px, 2.5vw, 22px); line-height: 1.7; }
.cta { display: inline-flex; min-height: 54px; align-items: center; justify-content: center; margin-top: 30px; padding: 0 24px; border-radius: 18px; background: var(--primary); color: #fff; font-weight: 800; text-decoration: none; box-shadow: 0 10px 24px rgba(32,174,180,.22); }
.cta:hover { background: var(--primary-dark); color: #fff; }
.sections { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; padding: 18px 0 72px; }
.card { padding: 25px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); box-shadow: 0 10px 30px rgba(34,65,70,.05); }
.card p { margin: 0; color: var(--muted); }
.card-mark { width: 42px; height: 42px; display: grid; place-items: center; margin-bottom: 16px; border-radius: 14px; background: #e7f8f8; color: var(--primary-dark); font-size: 22px; font-weight: 900; }
.legal { max-width: 780px; padding: 36px 0 72px; }
.legal-header { padding: 30px 0 24px; border-bottom: 1px solid var(--line); }
.legal-header h1 { font-size: clamp(30px, 5vw, 48px); }
.legal-meta { margin: 12px 0 0; color: var(--muted); font-size: 14px; }
.legal section { margin-top: 32px; }
.legal p, .legal li { color: #42555c; }
.legal ul { padding-left: 1.3em; }
.legal table { width: 100%; margin: 18px 0; border-collapse: collapse; font-size: 14px; }
.legal th, .legal td { padding: 12px; border: 1px solid var(--line); text-align: left; vertical-align: top; }
.legal th { background: #f5fafa; color: var(--ink); }
.support-card { margin-top: 26px; padding: 24px; border-radius: var(--radius); background: #eefafa; }
.site-footer { padding: 28px 0 38px; border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 10px; }
.footer-links a { color: var(--muted); }
@media (max-width: 720px) { .shell { width: min(100% - 32px, 1024px); } .hero { padding-top: 44px; } .sections { grid-template-columns: 1fr; padding-bottom: 48px; } .card { padding: 22px; } }