:root {
  --paper: #f7f7f4;
  --surface: #ffffff;
  --ink: #1b2430;
  --ink-soft: #5c6672;
  --rule: #ddddd6;
  --accent: #b03a2b;
  --accent-soft: #f4e7e3;
  --link: #27496d;
  --max: 42rem;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #14181d;
    --surface: #1b2027;
    --ink: #e8eaed;
    --ink-soft: #9aa3ad;
    --rule: #2c333c;
    --accent: #e2785f;
    --accent-soft: #2e2320;
    --link: #93b7dd;
  }
}
:root[data-theme="dark"] {
  --paper: #14181d;
  --surface: #1b2027;
  --ink: #e8eaed;
  --ink-soft: #9aa3ad;
  --rule: #2c333c;
  --accent: #e2785f;
  --accent-soft: #2e2320;
  --link: #93b7dd;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Zen Kaku Gothic New", "Hiragino Sans", "Noto Sans JP", sans-serif;
  font-size: 16px;
  line-height: 1.9;
  padding-inline: 20px;
  padding-block: 0 72px;
  -webkit-font-smoothing: antialiased;
}

.wrap { max-width: var(--max); margin-inline: auto; }

/* ---- site header / footer ---- */
.masthead {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  padding-block: 22px 0;
  border-bottom: 1px solid var(--rule);
}
.masthead a.brand {
  font-family: "Zen Old Mincho", "Hiragino Mincho ProN", serif;
  font-weight: 700;
  font-size: 19px;
  letter-spacing: 0.02em;
  color: var(--ink);
  text-decoration: none;
}
.masthead nav { display: flex; gap: 18px; font-size: 14px; padding-bottom: 10px; }
.masthead nav a { color: var(--ink-soft); text-decoration: none; }
.masthead nav a:hover, .masthead nav a:focus-visible { color: var(--accent); }

footer.site {
  margin-top: 64px;
  padding-top: 22px;
  border-top: 1px solid var(--rule);
  color: var(--ink-soft);
  font-size: 13px;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
footer.site a { color: var(--ink-soft); }

/* ---- type ---- */
h1 {
  font-family: "Zen Old Mincho", "Hiragino Mincho ProN", serif;
  font-weight: 700;
  font-size: clamp(27px, 6.2vw, 38px);
  line-height: 1.5;
  letter-spacing: 0.01em;
  text-wrap: balance;
  margin: 44px 0 0;
}
h2 {
  font-family: "Zen Old Mincho", "Hiragino Mincho ProN", serif;
  font-weight: 700;
  font-size: 21px;
  line-height: 1.6;
  text-wrap: balance;
  margin: 56px 0 14px;
  padding-bottom: 9px;
  border-bottom: 1px solid var(--rule);
}
h3 { font-size: 16px; font-weight: 700; margin: 26px 0 6px; }
p { margin: 0 0 16px; }
a { color: var(--link); }
.lede {
  font-size: 17px;
  color: var(--ink-soft);
  margin-top: 14px;
}
ul, ol { margin: 0 0 16px; padding-inline-start: 1.4em; }
li { margin-bottom: 8px; }
.note { font-size: 13px; color: var(--ink-soft); }

/* the vermillion mark: used only where the meaning is "correct it" */
.mark {
  background: linear-gradient(transparent 62%, var(--accent-soft) 62%);
  padding-inline: 1px;
}

/* ---- blocks ---- */
.panel {
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: 3px;
  padding: 22px 24px;
  margin-block: 20px;
}
.panel > :last-child { margin-bottom: 0; }

.refuse {
  border-left: 3px solid var(--accent);
}
.refuse h3 { color: var(--accent); }
.refuse ul { list-style: none; padding-inline-start: 0; }
.refuse li { padding-inline-start: 1.5em; position: relative; }
.refuse li::before {
  content: "×";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 700;
}

.price {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 28px;
  align-items: baseline;
  margin-bottom: 14px;
}
.price .amount {
  font-family: "Zen Old Mincho", "Hiragino Mincho ProN", serif;
  font-size: 34px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  line-height: 1.2;
}
.price .unit { font-size: 15px; color: var(--ink-soft); }

.steps { list-style: none; padding-inline-start: 0; counter-reset: s; }
.steps li {
  counter-increment: s;
  padding-inline-start: 2.2em;
  position: relative;
  margin-bottom: 14px;
}
.steps li::before {
  content: counter(s);
  position: absolute;
  left: 0;
  top: 0.35em;
  width: 1.6em;
  height: 1.6em;
  border: 1px solid var(--rule);
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 13px;
  font-variant-numeric: tabular-nums;
  color: var(--ink-soft);
  line-height: 1;
}

.cta {
  display: inline-block;
  background: var(--ink);
  color: var(--paper);
  text-decoration: none;
  font-weight: 700;
  padding: 13px 26px;
  border-radius: 3px;
  margin-top: 6px;
}
.cta:hover, .cta:focus-visible { background: var(--accent); }

.cards { display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr)); }

dl.facts { margin: 0; }
dl.facts div {
  display: grid;
  grid-template-columns: 9.5rem 1fr;
  gap: 4px 16px;
  padding-block: 11px;
  border-bottom: 1px solid var(--rule);
}
dl.facts div:last-child { border-bottom: 0; }
dl.facts dt { color: var(--ink-soft); font-size: 14px; }
dl.facts dd { margin: 0; }
@media (max-width: 30rem) {
  dl.facts div { grid-template-columns: 1fr; }
}

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

/* ---- SNS ---- */
.social {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}
.social a {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 6px 13px 6px 10px;
  border: 1px solid var(--rule);
  border-radius: 999px;
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 12.5px;
  line-height: 1;
  transition: 0.18s;
}
.social a:hover {
  color: var(--accent);
  border-color: var(--accent);
}
.social svg {
  width: 15px;
  height: 15px;
  fill: currentColor;
  flex: none;
}