*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --color-bg: #fafafa;
  --color-surface: #ffffff;
  --color-text: #1a1a1a;
  --color-text-secondary: #555;
  --color-border: #e0e0e0;
  --color-accent: #2a2a2a;
  --color-link: #1a1a1a;
  --color-link-hover: #444;
  --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, "Noto Sans", sans-serif, "Apple Color Emoji",
    "Segoe UI Emoji", "Segoe UI Symbol";
  --max-width: 42rem;
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --space-xl: 6rem;
}

html {
  font-size: 100%;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-stack);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-text);
  background-color: var(--color-bg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--color-link);
  text-decoration: none;
  border-bottom: 1px solid var(--color-border);
  transition: border-color 0.2s ease, color 0.2s ease;
}

a:hover,
a:focus-visible {
  color: var(--color-link-hover);
  border-bottom-color: var(--color-link-hover);
}

a:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* ── Header ── */

.site-header {
  padding: var(--space-md) var(--space-md);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface);
}

.site-header__inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.site-header__name {
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--color-accent);
}

.site-header__suffix {
  font-weight: 400;
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  display: block;
  margin-top: 0.15rem;
}

/* ── Main ── */

main {
  flex: 1;
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-lg) var(--space-md);
}

/* ── Hero (index) ── */

.hero {
  margin-bottom: var(--space-lg);
}

.hero__title {
  font-size: clamp(1.6rem, 4vw, 2.2rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.2;
  margin-bottom: var(--space-sm);
}

.hero__notice {
  font-size: 1.05rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-xs);
}

.hero__contact-hint {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
}

/* ── Divider ── */

.divider {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: var(--space-lg) 0;
}

/* ── Contact block ── */

.contact {
  margin-bottom: var(--space-lg);
}

.contact__heading {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-sm);
}

.contact__card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 0.5rem;
  padding: var(--space-md);
}

.contact__company {
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.contact__line {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
}

.contact__line + .contact__line {
  margin-top: 0.15rem;
}

.contact__separator {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: var(--space-sm) 0;
}

.contact__label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-secondary);
  margin-bottom: 0.25rem;
}

.contact__value {
  font-size: 0.95rem;
}

.contact__value a {
  word-break: break-all;
}

/* ── Legal pages ── */

.legal {
  margin-bottom: var(--space-lg);
}

.legal__title {
  font-size: clamp(1.4rem, 3.5vw, 1.8rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.25;
  margin-bottom: var(--space-md);
}

.legal h2 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-top: var(--space-md);
  margin-bottom: var(--space-xs);
}

.legal h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-top: var(--space-sm);
  margin-bottom: 0.25rem;
}

.legal p {
  margin-bottom: var(--space-sm);
  color: var(--color-text-secondary);
  font-size: 0.95rem;
}

.legal ul {
  margin-bottom: var(--space-sm);
  padding-left: 1.25rem;
  color: var(--color-text-secondary);
  font-size: 0.95rem;
}

.legal li {
  margin-bottom: 0.35rem;
}

.legal address {
  font-style: normal;
  color: var(--color-text-secondary);
  font-size: 0.95rem;
  margin-bottom: var(--space-sm);
}

/* ── Footer ── */

.site-footer {
  border-top: 1px solid var(--color-border);
  padding: var(--space-md);
  background: var(--color-surface);
}

.site-footer__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-sm);
}

.site-footer__copy {
  font-size: 0.8rem;
  color: var(--color-text-secondary);
}

.site-footer__nav {
  display: flex;
  gap: var(--space-sm);
}

.site-footer__nav a {
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  border-bottom: none;
}

.site-footer__nav a:hover,
.site-footer__nav a:focus-visible {
  color: var(--color-text);
}

/* ── Back link (legal pages) ── */

.back-link {
  display: inline-block;
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-md);
}

/* ── Responsive ── */

@media (max-width: 480px) {
  main {
    padding: var(--space-md) var(--space-sm);
  }

  .site-header {
    padding: var(--space-sm);
  }

  .site-footer__inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .contact__card {
    padding: var(--space-sm);
  }
}