:root {
  --navy: #0f2a44;
  --navy-2: #173a5c;
  --teal: #0f8b8d;
  --teal-dark: #0b6f71;
  --amber: #c77d10;
  --red: #c0392b;
  --ink: #1d2733;
  --muted: #5b6878;
  --line: #dfe5ec;
  --bg: #ffffff;
  --bg-alt: #f3f6f9;
  --radius: 14px;
  --shadow: 0 6px 24px rgba(15, 42, 68, .08);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 72px; }
body {
  margin: 0;
  font-family: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Yu Gothic", "Meiryo", sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.8;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}
img, svg { max-width: 100%; }
a { color: var(--teal-dark); }
h1, h2, h3 { line-height: 1.4; margin: 0; }
p { margin: 0; }

.wrap { width: min(1080px, 100% - 32px); margin-inline: auto; }
.narrow { width: min(760px, 100% - 32px); }
.center { text-align: center; }
.sp { display: none; }

/* ヘッダー */
.site-header {
  position: sticky; top: 0; z-index: 10;
  background: rgba(255, 255, 255, .95);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--line);
}
.header-inner { display: flex; align-items: center; gap: 24px; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--navy); text-decoration: none; font-weight: 700; }
.brand-mark { width: 30px; height: 30px; color: var(--teal); flex: none; }
.brand-text { display: flex; flex-direction: column; line-height: 1.2; font-size: 15px; }
.brand-sub { font-size: 11px; color: var(--muted); font-weight: 500; }
.nav { display: flex; gap: 22px; margin-left: auto; }
.nav a { color: var(--ink); text-decoration: none; font-size: 14px; }
.nav a:hover { color: var(--teal-dark); }

/* ボタン */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 14px 26px; border-radius: 999px;
  font-weight: 700; text-decoration: none; font-size: 16px;
  transition: background .15s, transform .15s, box-shadow .15s;
  border: 2px solid transparent;
}
.btn-primary { background: var(--teal); color: #fff; box-shadow: 0 6px 18px rgba(15, 139, 141, .3); }
.btn-primary:hover { background: var(--teal-dark); transform: translateY(-1px); }
.btn-ghost { color: #fff; border-color: rgba(255, 255, 255, .6); }
.btn-ghost:hover { background: rgba(255, 255, 255, .1); }
.btn-small { padding: 9px 18px; font-size: 14px; background: var(--teal); color: #fff; }
.btn-small:hover { background: var(--teal-dark); }
.btn-large { padding: 18px 36px; font-size: 18px; }

/* ファーストビュー */
.hero {
  background:
    radial-gradient(900px 400px at 85% -10%, rgba(15, 139, 141, .45), transparent 60%),
    linear-gradient(160deg, var(--navy) 0%, var(--navy-2) 100%);
  color: #fff;
  padding: 88px 0 80px;
}
.eyebrow { font-size: 14px; letter-spacing: .08em; color: #9fd8d9; font-weight: 700; margin-bottom: 18px; }
.hero h1 { font-size: clamp(30px, 5vw, 50px); font-weight: 800; letter-spacing: .02em; }
.lead { margin-top: 24px; font-size: 17px; color: #dce7f1; max-width: 720px; }
.lead strong { color: #fff; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 34px; }
.hero-points { display: flex; flex-wrap: wrap; gap: 10px 24px; list-style: none; padding: 0; margin: 28px 0 0; font-size: 14px; color: #c6d6e4; }
.hero-points li::before { content: "✓"; color: #6fd3d4; margin-right: 6px; font-weight: 700; }

/* セクション共通 */
.section { padding: 84px 0; }
.section-alt { background: var(--bg-alt); }
.section-dark { background: var(--navy); color: #fff; }
.section-title { font-size: clamp(24px, 3.4vw, 34px); font-weight: 800; color: var(--navy); text-align: center; }
.section-dark .section-title { color: #fff; }
.section-lead { margin: 18px auto 0; max-width: 760px; color: var(--muted); text-align: center; }
.section-dark .section-lead { color: #c6d6e4; }

/* カード */
.cards { display: grid; gap: 20px; margin-top: 44px; }
.cards.three { grid-template-columns: repeat(3, 1fr); }
.card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 28px 26px; box-shadow: var(--shadow); }
.card h3 { font-size: 19px; color: var(--navy); margin-bottom: 10px; }
.card p { color: var(--muted); font-size: 15px; }
.promise .card { background: rgba(255, 255, 255, .06); border-color: rgba(255, 255, 255, .14); box-shadow: none; }
.promise .card h3 { color: #fff; }
.promise .card p { color: #c6d6e4; }

/* 見つかったもの */
.found-list { list-style: none; padding: 0; margin: 40px auto 0; max-width: 820px; display: grid; gap: 12px; }
.found-list li { background: #fff; border: 1px solid var(--line); border-radius: 10px; padding: 14px 18px; display: flex; gap: 14px; align-items: baseline; }
.tag { flex: none; font-size: 12px; font-weight: 700; padding: 2px 10px; border-radius: 999px; color: #fff; }
.tag-red { background: var(--red); }
.tag-amber { background: var(--amber); }
.tag-gray { background: #7a8794; }
.note { text-align: center; margin-top: 22px; font-size: 14px; color: var(--muted); }

/* 確認項目 */
.check-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-top: 44px; }
.check-col { border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; }
.check-col h3 { font-size: 19px; color: var(--navy); display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
.step-no { font-size: 12px; background: var(--teal); color: #fff; padding: 3px 10px; border-radius: 999px; }
.step-no-dark { background: var(--navy); }
.checks { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.checks li { padding-left: 26px; position: relative; font-size: 15px; }
.checks li::before { content: ""; position: absolute; left: 4px; top: .55em; width: 10px; height: 6px; border-left: 2px solid var(--teal); border-bottom: 2px solid var(--teal); transform: rotate(-45deg); }

/* 料金 */
.plans { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin-top: 44px; align-items: stretch; }
.plan { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 28px 22px; display: flex; flex-direction: column; position: relative; }
.plan h3 { font-size: 18px; color: var(--navy); }
.price { font-size: 34px; font-weight: 800; color: var(--navy); margin: 12px 0 10px; letter-spacing: .01em; }
.price span { font-size: 15px; font-weight: 700; margin-left: 2px; }
.price .from { font-size: 34px; margin: 0; }
.plan-desc { font-size: 14px; color: var(--muted); }
.plan-list { list-style: none; padding: 0; margin: 16px 0 0; display: grid; gap: 6px; font-size: 14px; }
.plan-list li { padding-left: 18px; position: relative; }
.plan-list li::before { content: "・"; position: absolute; left: 0; color: var(--teal); font-weight: 700; }
.plan-foot { margin-top: auto; padding-top: 16px; font-size: 12px; color: var(--muted); }
.plan-featured { border: 2px solid var(--teal); box-shadow: 0 10px 30px rgba(15, 139, 141, .18); }
.plan-badge { position: absolute; top: -13px; left: 50%; transform: translateX(-50%); background: var(--teal); color: #fff; font-size: 12px; font-weight: 700; padding: 3px 14px; border-radius: 999px; white-space: nowrap; }

/* 進め方 */
.flow { list-style: none; padding: 0; margin: 44px auto 0; max-width: 820px; display: grid; gap: 16px; }
.flow li { display: flex; gap: 20px; align-items: flex-start; background: var(--bg-alt); border-radius: var(--radius); padding: 22px 24px; }
.flow-no { flex: none; width: 42px; height: 42px; border-radius: 50%; background: var(--navy); color: #fff; display: grid; place-items: center; font-weight: 800; font-size: 18px; }
.flow h3 { font-size: 18px; color: var(--navy); margin-bottom: 4px; }
.flow p { color: var(--muted); font-size: 15px; }

/* よくある質問 */
.faq { border-bottom: 1px solid var(--line); padding: 4px 0; }
.faq:first-of-type { margin-top: 36px; border-top: 1px solid var(--line); }
.faq summary { cursor: pointer; list-style: none; padding: 18px 36px 18px 0; font-weight: 700; color: var(--navy); position: relative; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 6px; top: 50%; transform: translateY(-50%); font-size: 22px; color: var(--teal); font-weight: 400; }
.faq[open] summary::after { content: "−"; }
.faq p { padding: 0 0 20px; color: var(--muted); font-size: 15px; }

/* 申し込み */
.section-cta { background: linear-gradient(160deg, #e9f6f6, #f3f6f9); }
.section-cta .btn { margin-top: 30px; }
.tel { margin-top: 22px; font-size: 15px; color: var(--muted); }
.tel a { font-weight: 700; color: var(--navy); text-decoration: none; }

/* フッター */
.site-footer { background: #0b1f33; color: #b8c6d4; padding: 40px 0 24px; font-size: 14px; }
.footer-inner { display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.footer-name { color: #fff; font-weight: 700; margin-bottom: 6px; }
.footer-links { list-style: none; padding: 0; margin: 0; display: flex; gap: 20px; flex-wrap: wrap; }
.footer-links a { color: #b8c6d4; }
.copy { text-align: center; margin-top: 28px; font-size: 12px; color: #7f92a5; }

/* スマートフォン */
@media (max-width: 960px) {
  .plans { grid-template-columns: repeat(2, 1fr); }
  .nav { display: none; }
  .header-inner { justify-content: space-between; }
}
@media (max-width: 720px) {
  body { font-size: 15px; }
  .sp { display: inline; }
  .pc { display: none; }
  .hero { padding: 56px 0 56px; }
  .lead { font-size: 15px; }
  .hero-cta .btn { width: 100%; }
  .section { padding: 60px 0; }
  .cards.three, .check-grid, .plans { grid-template-columns: 1fr; }
  .plan-featured { order: -1; margin-top: 10px; }
  .brand-text { font-size: 13px; }
  .btn-small { padding: 8px 12px; font-size: 12px; }
  .found-list li { flex-direction: column; gap: 6px; }
  .flow li { padding: 18px; gap: 14px; }
  .btn-large { width: 100%; padding: 16px 20px; font-size: 16px; }
}

/* 個人情報の取り扱い */
.legal { margin-top: 36px; }
.legal h2 { font-size: 18px; color: var(--navy); margin: 28px 0 8px; }
.legal p, .legal li { font-size: 15px; color: var(--ink); }
.legal ul { padding-left: 1.4em; margin: 0; }

.brand-text, .btn-small { white-space: nowrap; }