:root {
  --ink: #29483f;
  --body: #374a43;
  --muted: #64746d;
  --line: #dce3df;
  --soft: #f5f8f6;
  --green: #32594e;
  --serif: "Yu Mincho", "Hiragino Mincho ProN", "Noto Serif CJK JP", serif;
}
* { box-sizing: border-box; }
html, body {
  margin: 0; padding: 0;
  background: #fff;
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Kaku Gothic ProN", "Yu Gothic", "Noto Sans CJK JP", sans-serif;
  color: var(--body); line-height: 1.7; letter-spacing: 0;
}
body { min-height: 100vh; display: flex; flex-direction: column; }
a { color: inherit; }
:focus-visible { outline: 2px solid var(--green); outline-offset: 4px; }
.skip-link { position: absolute; top: -80px; left: 16px; z-index: 5; background: #fff; padding: 12px 18px; }
.skip-link:focus { top: 12px; }
.site-header { border-bottom: 1px solid var(--line); }
.header-inner { max-width: 1320px; margin: auto; min-height: 88px; padding: 16px 40px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: flex; flex-direction: column; align-items: center; color: var(--ink); font-family: var(--serif); line-height: 1.4; text-decoration: none; }
.brand-name { font-size: 24px; font-weight: 600; }
.brand-domain { font-size: 12px; margin-top: 2px; }
.header-link { display: inline-flex; align-items: center; min-height: 44px; font-size: 14px; color: var(--ink); text-underline-offset: 6px; white-space: nowrap; }
.header-link:hover { text-decoration-thickness: 2px; }
.phrase { display: inline-block; }
.ui-icon { width: 20px; height: 20px; flex: none; vertical-align: middle; }
.btn-start {
  display: flex; align-items: center; justify-content: space-between; gap: 24px; width: 260px; max-width: 100%;
  background: var(--green); color: #fff; border-radius: 4px; min-height: 56px;
  padding: 15px 24px; font-size: 17px; font-weight: 600; transition: background .15s; text-decoration: none;
}
.btn-start:hover { background: #24463c; }
.site-footer { border-top: 1px solid var(--line); }
.footer-inner { max-width: 1320px; margin: auto; padding: 22px 40px; display: flex; align-items: center; justify-content: space-between; gap: 20px; font-size: 12px; color: var(--muted); }
.footer-privacy { margin: 0; display: flex; align-items: center; gap: 10px; }
.footer-privacy .ui-icon { width: 16px; height: 16px; }
.footer-domain { margin: 0; font-family: var(--serif); color: var(--ink); white-space: nowrap; }
@media (max-width: 1100px) {
  .header-inner, .footer-inner { padding-left: 32px; padding-right: 32px; }
}
@media (max-width: 760px) {
  .header-inner { min-height: 72px; padding: 12px 24px; gap: 16px; }
  .brand-name { font-size: 20px; }
  .brand-domain { font-size: 10px; }
  .header-link { font-size: 12px; }
  .footer-inner { padding: 20px 24px; flex-wrap: wrap; gap: 12px; }
  .footer-privacy { align-items: flex-start; }
  .footer-privacy .ui-icon { margin-top: 3px; }
}
@media (max-width: 360px) {
  .header-inner { padding-left: 20px; padding-right: 20px; gap: 12px; }
  .brand-name { font-size: 18px; }
}
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { transition: none !important; } }