/* ウィクミのアプリの色（紙色の面と深緑のアクセント）にそろえる */
:root {
  color-scheme: light dark;
  --bg: #fffcf6;
  --surface: #f7f3ea;
  --text: #111827;
  --muted: #4b5563;
  --line: #e8e0d4;
  --accent: #047857;
  --accent-soft: #d1fae5;
  --radius: 16px;
  font-family:
    -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic UI",
    "Yu Gothic", sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b0b0c;
    --surface: #1c1c1e;
    --text: #f3f4f6;
    --muted: #a1a1aa;
    --line: #2c2c2e;
    --accent: #34d399;
    --accent-soft: #064e3b;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--text);
  background: var(--bg);
  font-size: 16px;
  line-height: 1.85;
}

a {
  color: var(--accent);
  text-underline-offset: 0.2em;
}

img {
  display: block;
  max-width: 100%;
}

.shell {
  width: min(760px, calc(100% - 32px));
  margin-inline: auto;
}

.site-header {
  border-bottom: 1px solid var(--line);
}

.site-header .shell {
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 700;
  text-decoration: none;
}

.brand img {
  width: 32px;
  height: 32px;
  border-radius: 8px;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 16px;
  font-size: 14px;
}

.site-nav a {
  color: var(--muted);
  text-decoration: none;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--accent);
}

main {
  padding-block: 40px 64px;
}

h1 {
  margin: 0 0 8px;
  font-size: clamp(26px, 5vw, 34px);
  line-height: 1.35;
}

h2 {
  margin: 40px 0 8px;
  font-size: 20px;
  line-height: 1.5;
}

h3 {
  margin: 24px 0 4px;
  font-size: 17px;
}

p,
ol,
ul {
  margin: 0 0 12px;
}

ol,
ul {
  padding-left: 1.5em;
}

li + li {
  margin-top: 4px;
}

.lead {
  color: var(--muted);
}

.eyebrow {
  margin: 0 0 4px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.card {
  margin-top: 24px;
  padding: 20px;
  border-radius: var(--radius);
  background: var(--surface);
}

.app-card {
  display: flex;
  align-items: center;
  gap: 16px;
  color: var(--text);
  text-decoration: none;
}

.app-card img {
  width: 64px;
  height: 64px;
  border-radius: 14px;
  flex-shrink: 0;
}

.app-card strong {
  display: block;
  font-size: 18px;
}

.app-card span {
  color: var(--muted);
  font-size: 14px;
}

.button {
  display: inline-block;
  margin-top: 8px;
  padding: 10px 20px;
  border-radius: 999px;
  background: var(--accent);
  color: var(--bg);
  font-weight: 700;
  text-decoration: none;
}

.meta {
  margin-top: 40px;
  color: var(--muted);
  font-size: 14px;
}

.site-footer {
  border-top: 1px solid var(--line);
  padding-block: 24px 40px;
  color: var(--muted);
  font-size: 13px;
}

.site-footer .shell {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
}

.site-footer a {
  color: var(--muted);
}