:root {
  color-scheme: dark;
  --bg: #11130f;
  --ink: #ece9df;
  --muted: #98998f;
  --line: #383a31;
  --accent: #c8b46b;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background: var(--bg);
  font-family: "Yu Gothic", "Hiragino Sans", "Meiryo", system-ui, sans-serif;
}

a { color: inherit; text-decoration: none; }

a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.site-header,
.distribution-shell,
.site-footer {
  width: min(1040px, calc(100% - 40px));
  margin-inline: auto;
}

.site-header {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: .9rem;
  font-weight: 700;
}

.brand img {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  object-fit: cover;
}

.home-link {
  color: var(--muted);
  font-size: .82rem;
}

.home-link:hover { color: var(--ink); }

.distribution-shell { padding: 42px 0 76px; }

.page-title {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 24px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}

.page-title h1 {
  margin: 0;
  font-family: "Yu Mincho", "Hiragino Mincho ProN", serif;
  font-size: clamp(2.1rem, 4vw, 3.1rem);
  font-weight: 400;
}

.page-title p {
  margin: 0;
  color: var(--muted);
  font-size: .8rem;
}

.software-list { border-top: 1px solid var(--line); margin-top: 36px; }

.software-item {
  display: grid;
  grid-template-columns: 210px minmax(0, 1fr);
  gap: 36px;
  align-items: center;
  padding: 34px 0;
  border-bottom: 1px solid var(--line);
}

.software-item > img {
  width: 210px;
  aspect-ratio: 16 / 10;
  display: block;
  object-fit: cover;
  object-position: top left;
  border: 1px solid var(--line);
  background: #0a0b09;
}

.software-item > img.is-logo {
  object-fit: contain;
  object-position: center;
}

.software-copy h2 {
  margin: 4px 0 10px;
  font-family: "Yu Mincho", "Hiragino Mincho ProN", serif;
  font-size: 1.65rem;
  font-weight: 500;
}

.software-copy > p:not(.software-type) {
  max-width: 620px;
  margin: 0;
  color: var(--muted);
  line-height: 1.8;
}

.software-type {
  margin: 0;
  color: var(--accent);
  font-size: .72rem;
  font-weight: 700;
  text-transform: uppercase;
}

.software-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  margin-top: 20px;
  font-size: .86rem;
}

.software-links a {
  padding-bottom: 3px;
  border-bottom: 1px solid var(--line);
}

.software-links a:hover { border-color: var(--ink); }
.software-links .primary-link { color: var(--accent); }

.site-footer {
  padding: 22px 0 40px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: .72rem;
}

.site-footer p { margin: 0; }

@media (max-width: 680px) {
  .site-header,
  .distribution-shell,
  .site-footer { width: calc(100% - 28px); }

  .site-header { min-height: 64px; }
  .brand span { font-size: .78rem; }
  .distribution-shell { padding: 34px 0 60px; }
  .page-title { display: block; }
  .page-title p { margin-top: 8px; }
  .software-list { margin-top: 30px; }

  .software-item {
    grid-template-columns: 1fr;
    gap: 20px;
    padding: 28px 0 32px;
  }

  .software-item > img {
    width: 100%;
    max-width: 360px;
  }
}