@charset "utf-8";

/* =========================================================
   ノックアウトオプション入門 / base
   ========================================================= */
*,
*::before,
*::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: #ffffff;
  color: #16191d;
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans",
    "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Yu Gothic", Meiryo, sans-serif;
  font-size: 16px;
  line-height: 1.95;
  letter-spacing: .02em;
}

a { color: #0f5c63; }
a:hover { color: #0a3f44; }

img { max-width: 100%; height: auto; }

.wrap {
  width: 100%;
  max-width: 760px;
  margin: 0 auto;
  padding: 0 18px;
}

main { padding-bottom: 56px; }

/* =========================================================
   header / footer （サイト名とページリンクのみ）
   ========================================================= */
.site-header {
  border-bottom: 2px solid #16191d;
  background: #fff;
}

.site-header__inner {
  padding-top: 16px;
  padding-bottom: 12px;
}

.site-name {
  margin: 0 0 8px;
  font-size: 18px;
  font-weight: 800;
  letter-spacing: .04em;
}

.site-name a { color: #16191d; text-decoration: none; }

.site-nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 16px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 13px;
}

.site-nav a { color: #3d454d; text-decoration: none; }
.site-nav a:hover { text-decoration: underline; }
.site-nav a[aria-current="page"] { font-weight: 700; color: #16191d; }

.site-footer {
  margin-top: 56px;
  border-top: 2px solid #16191d;
  padding: 22px 0 30px;
  font-size: 13px;
  color: #3d454d;
}

.site-footer ul {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 16px;
  margin: 0 0 12px;
  padding: 0;
  list-style: none;
}

.site-footer a { color: #3d454d; }
.site-footer p { margin: 0; font-size: 12px; color: #6b7178; }

/* =========================================================
   headings （大きい見出し）
   ========================================================= */
h1 {
  margin: 20px 0 16px;
  font-size: 28px;
  line-height: 1.45;
  font-weight: 800;
  letter-spacing: 0;
}

h2 {
  margin: 52px 0 18px;
  padding-bottom: 10px;
  border-bottom: 3px solid #16191d;
  font-size: 23px;
  line-height: 1.5;
  font-weight: 800;
}

h3 {
  margin: 34px 0 12px;
  font-size: 18px;
  line-height: 1.6;
  font-weight: 700;
}

h4 { margin: 22px 0 8px; font-size: 15px; font-weight: 700; }

p { margin: 0 0 18px; }

ul, ol { margin: 0 0 20px; padding-left: 1.5em; }
li { margin-bottom: 8px; }

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
  font-size: 12px;
  color: #6b7178;
}

.breadcrumb li + li::before { content: "›"; margin-right: 6px; color: #b0b6bc; }

/* =========================================================
   article meta / 広告表記
   ========================================================= */
.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 12px;
  margin: 0 0 22px;
  padding-bottom: 16px;
  border-bottom: 1px solid #e1e5e9;
  font-size: 12px;
  color: #6b7178;
}

.ad-label {
  display: inline-block;
  padding: 3px 10px;
  border: 1px solid #16191d;
  border-radius: 3px;
  background: #16191d;
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .06em;
}

.lead p:first-child { font-weight: 700; }

/* =========================================================
   tables
   ========================================================= */
.table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin: 0 0 14px;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  line-height: 1.85;
}

.data-table th,
.data-table td {
  border: 1px solid #d5dade;
  padding: 11px 13px;
  text-align: left;
  vertical-align: top;
}

.data-table thead th {
  background: #16191d;
  color: #fff;
  font-weight: 700;
  white-space: nowrap;
}

.data-table tbody th {
  background: #f3f5f7;
  font-weight: 700;
  white-space: nowrap;
}

.data-table--spec tbody th { width: 34%; }
.data-table--wide { min-width: 620px; }

.table-note {
  margin: 0 0 24px;
  font-size: 12px;
  line-height: 1.85;
  color: #6b7178;
}

/* =========================================================
   番号ステップ
   ========================================================= */
.steps {
  margin: 0 0 8px;
  padding: 0;
  list-style: none;
  counter-reset: step;
}

.steps > li {
  position: relative;
  margin: 0 0 32px;
  padding: 0 0 0 52px;
  counter-increment: step;
}

.steps > li::before {
  content: counter(step);
  position: absolute;
  top: 0;
  left: 0;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: #16191d;
  color: #fff;
  font-size: 17px;
  font-weight: 800;
  line-height: 36px;
  text-align: center;
}

.steps h3 { margin-top: 2px; }

/* =========================================================
   notes
   ========================================================= */
.note {
  margin: 0 0 18px;
  padding: 13px 15px;
  border: 1px solid #d5dade;
  border-radius: 4px;
  background: #f7f9fa;
  font-size: 14px;
  line-height: 1.85;
}

.note > :last-child { margin-bottom: 0; }

.note__label {
  display: block;
  margin-bottom: 4px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .08em;
  color: #3d454d;
}

.note--caution { border-color: #d9bdb6; background: #fdf7f5; }
.note--caution .note__label { color: #9c3a27; }

.note--check { border-color: #b7cdd0; background: #f4fafa; }
.note--check .note__label { color: #0f5c63; }

/* =========================================================
   risk box
   ========================================================= */
.risk {
  margin: 26px 0;
  padding: 16px 18px;
  border: 2px solid #16191d;
  background: #fff;
  font-size: 14px;
  line-height: 1.85;
}

.risk h2,
.risk h3 { margin: 0 0 10px; padding: 0; border: none; font-size: 16px; }
.risk > :last-child { margin-bottom: 0; }
.risk ul { margin-bottom: 0; }

/* =========================================================
   CTA
   ========================================================= */
.cta {
  margin: 30px 0;
  padding: 20px 18px;
  border: 1px solid #d5dade;
  border-radius: 6px;
  background: #f7f9fa;
}

.cta__title { margin: 0 0 10px; font-size: 16px; font-weight: 700; }

.cta__points { margin: 0 0 18px; padding-left: 1.2em; font-size: 14px; }
.cta__points li { margin-bottom: 4px; }

.cta__btn {
  display: block;
  padding: 16px;
  border-radius: 6px;
  background: #0f5c63;
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  text-align: center;
  text-decoration: none;
}

.cta__btn:hover { background: #0a3f44; color: #fff; }

.cta__placeholder {
  margin: 8px 0 0;
  font-size: 12px;
  color: #6b7178;
  text-align: center;
}

.cta__note { margin: 10px 0 0; font-size: 12px; line-height: 1.8; color: #6b7178; }

/* =========================================================
   toc
   ========================================================= */
.toc {
  margin: 30px 0;
  padding: 16px 18px;
  border: 1px solid #e1e5e9;
  background: #f7f9fa;
  border-radius: 6px;
}

.toc__title { margin: 0 0 8px; font-size: 14px; font-weight: 700; }
.toc ol { margin: 0; padding-left: 1.4em; font-size: 14px; }
.toc li { margin-bottom: 4px; }

/* =========================================================
   FAQ
   ========================================================= */
.faq details {
  margin-bottom: 10px;
  border: 1px solid #d5dade;
  border-radius: 4px;
}

.faq summary {
  padding: 15px 16px;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.7;
  cursor: pointer;
  list-style: none;
}

.faq summary::-webkit-details-marker { display: none; }
.faq summary::before { content: "Q. "; color: #0f5c63; }
.faq details[open] summary { border-bottom: 1px solid #eceff1; }
.faq__body { padding: 14px 16px 4px; font-size: 14px; }

/* =========================================================
   cards / summary / disclaimer
   ========================================================= */
.cards { margin: 0; padding: 0; list-style: none; }

.card {
  margin-bottom: 16px;
  padding: 20px;
  border: 2px solid #16191d;
  border-radius: 6px;
}

.card h3 { margin: 0 0 10px; font-size: 19px; }
.card h3 a { text-decoration: none; }
.card h3 a:hover { text-decoration: underline; }
.card p { margin: 0 0 10px; font-size: 14px; }
.card__meta { margin: 0; font-size: 12px; color: #6b7178; }

.summary-list li { margin-bottom: 12px; }

.disclaimer {
  margin: 36px 0 0;
  padding: 18px;
  border: 1px solid #e1e5e9;
  background: #f7f9fa;
  border-radius: 6px;
  font-size: 12px;
  line-height: 1.95;
  color: #4a5158;
}

.disclaimer h2 {
  margin: 0 0 8px;
  padding: 0;
  border: none;
  font-size: 14px;
  color: #16191d;
}

.disclaimer > :last-child { margin-bottom: 0; }

@media (min-width: 620px) {
  body { font-size: 17px; }
  h1 { font-size: 34px; }
  h2 { font-size: 26px; }
  .wrap { padding: 0 24px; }
}