*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header) + 16px); }
body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-ink);
  font-family: var(--font-sans);
  font-size: var(--text-body);
  font-weight: 400;
  line-height: var(--leading-body);
  letter-spacing: 0.03em;
  text-rendering: optimizeLegibility;
}
img, svg { max-width: 100%; height: auto; display: block; }
a { color: var(--color-accent); text-underline-offset: 3px; }
button, input, select, textarea { font: inherit; color: inherit; }
h1, h2, h3 {
  font-family: var(--font-serif);
  font-weight: 600;
  margin: 0;
  line-break: strict;
  word-break: auto-phrase;
}
h1 {
  font-size: clamp(30px, 4.2vw + 14px, 60px);
  line-height: 1.4;
  letter-spacing: 0.06em;
}
h2 {
  font-size: clamp(24px, 2vw + 17px, 40px);
  line-height: 1.5;
  letter-spacing: 0.04em;
}
h3 { font-size: 22px; line-height: 1.5; letter-spacing: 0.04em; }
p { margin: 0 0 16px; }
p:last-child { margin-bottom: 0; }
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}
.skip {
  position: absolute;
  left: 20px;
  top: 8px;
  z-index: 40;
  background: var(--color-ink);
  color: var(--color-bg);
  padding: 8px 16px;
  border-radius: var(--radius-btn);
  transform: translateY(-160%);
}
.skip:focus { transform: none; }
.preview-bar {
  background: var(--color-ink);
  color: var(--color-bg);
  font-size: 14px;
  line-height: 1.7;
  letter-spacing: 0.02em;
  padding: 8px 20px;
  text-align: center;
}
.preview-bar a { color: inherit; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: color-mix(in srgb, var(--color-bg) 92%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-line);
}
.header-inner {
  max-width: var(--wrap);
  margin: 0 auto;
  min-height: var(--header);
  padding: 8px 20px;
  display: flex;
  align-items: center;
  gap: 16px;
}
.logo { text-decoration: none; color: var(--color-ink); margin-right: auto; display: grid; gap: 0; }
.logo-ja { font-family: var(--font-serif); font-size: 17px; letter-spacing: 0.06em; line-height: 1.3; white-space: nowrap; }
.logo-en {
  font-family: var(--font-en);
  font-size: 14px;
  letter-spacing: 0.14em;
  color: var(--color-muted);
  line-height: 1.2;
}
.menu-btn {
  flex: none;
  min-height: 44px;
  min-width: 44px;
  padding: 8px 12px;
  border: 1px solid var(--color-form);
  border-radius: var(--radius-btn);
  background: var(--color-bg);
  cursor: pointer;
  letter-spacing: 0.08em;
  white-space: nowrap;
}
.nav {
  display: none;
  position: absolute;
  left: 0;
  right: 0;
  top: 100%;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-line);
  padding: 8px 20px 24px;
  flex-direction: column;
  gap: 4px;
}
.nav.is-open {
  display: flex;
  min-height: calc(100vh - 120px);
  background: var(--color-bg);
}
.nav a {
  text-decoration: none;
  color: var(--color-ink);
  min-height: 44px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 8px 0;
  border-bottom: 1px solid var(--color-line);
}
.nav a[aria-current="page"] { color: var(--color-accent); font-weight: 500; }
.nav-en, .btn-en, .h-en {
  font-family: var(--font-sans);
  font-weight: 400;
  font-size: 14px;
  letter-spacing: 0.02em;
  line-height: 1.4;
  color: var(--color-muted);
}
.nav-cta {
  margin-top: 8px;
  border-bottom: 0;
  background: var(--color-accent);
  color: var(--color-on-accent);
  border-radius: var(--radius-btn);
  min-height: 48px;
  padding: 8px 16px;
  align-items: center;
  text-align: center;
}
.nav-cta .nav-en { color: rgba(255, 255, 255, 0.92); }
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 20px; }
.measure { max-width: var(--measure); }
.section { padding: 64px 0; }
.kicker {
  margin: 0 0 16px;
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
}
.h-en {
  display: block;
  margin-top: 8px;
  font-family: var(--font-en);
  font-weight: 500;
  font-size: clamp(14px, 0.42em, 28px);
  letter-spacing: 0.04em;
  text-transform: none;
  color: var(--color-muted);
}
.lede { font-size: 16px; max-width: 40em; }
.actions { display: flex; flex-direction: column; align-items: stretch; gap: 16px; margin-top: 32px; }
.btn {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  min-height: 48px;
  padding: 8px 20px;
  border-radius: var(--radius-btn);
  text-decoration: none;
  line-height: 1.3;
  letter-spacing: 0.04em;
}
.btn-primary {
  background: var(--color-accent);
  color: var(--color-on-accent);
  border: 1px solid var(--color-accent);
}
.btn-primary:hover { background: var(--color-accent-hover); border-color: var(--color-accent-hover); color: var(--color-on-accent); }
.btn-primary .btn-en { color: rgba(255, 255, 255, 0.92); }
.btn-ghost {
  background: transparent;
  color: var(--color-accent);
  border: 1px solid var(--color-accent);
}
.btn-ghost:hover { background: var(--color-tint); }
.btn-ghost .btn-en { color: var(--color-muted); }
.note {
  margin-top: 16px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-muted);
  overflow-wrap: anywhere;
}
.site-footer {
  border-top: 1px solid var(--color-line);
  padding: 48px 0 64px;
  background: var(--color-surface);
}
.footer-grid { display: grid; gap: 32px; }
.footer-name { font-family: var(--font-serif); font-size: 20px; letter-spacing: 0.06em; margin: 0 0 8px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 8px 24px; padding: 0; margin: 16px 0 0; list-style: none; }
.footer-links a { color: var(--color-ink); }
@media (min-width: 768px) {
  .section { padding: 96px 0; }
  .actions { flex-direction: row; flex-wrap: wrap; align-items: center; }
  .btn { align-items: flex-start; text-align: left; }
}
@media (min-width: 960px) {
  .menu-btn { display: none; }
  .nav {
    display: flex;
    position: static;
    flex-direction: row;
    align-items: center;
    gap: 8px;
    padding: 0;
    border: 0;
    background: transparent;
  }
  .nav a {
    min-height: 44px;
    border: 0;
    padding: 4px 8px;
    font-size: 15px;
  }
  .nav-cta { margin-top: 0; padding: 6px 14px; }
  .nav a { position: relative; }
  .nav a .nav-en {
    display: block;
    position: absolute;
    width: 1px;
    height: 1px;
    margin: -1px;
    padding: 0;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
  }
  a.nav-cta .nav-en {
    position: static;
    width: auto;
    height: auto;
    margin: 0;
    overflow: visible;
    clip: auto;
    white-space: normal;
    display: block;
    font-size: 14px;
  }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation: none !important;
    transition: none !important;
  }
}