:root {
  --bg: #0b1622;
  --bg2: #0f1f2e;
  --panel: #132637;
  --text: #e6edf0;
  --muted: #9fb0ba;
  --water: #8fc7d4;
  --water-soft: rgba(143,199,212,.32);
  --line: rgba(143,199,212,.2);
  --line-green: #06c755;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font-family: "Shippori Mincho", "Hiragino Mincho ProN", "Yu Mincho", serif;
  font-size: 15px; line-height: 2.15; letter-spacing: .08em; padding-bottom: 84px;
}
a { color: inherit; }
p { margin: 0 0 22px; }

header.bar {
  position: sticky; top: 0; z-index: 20; display: flex; justify-content: space-between; align-items: center;
  padding: 12px 18px; background: rgba(11,22,34,.86); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.brand { font-size: 18px; letter-spacing: .28em; line-height: 1.3; }
.brand small { display: block; font-size: 10px; color: var(--muted); letter-spacing: .2em; }
.bar a { font-size: 11px; border: 1px solid var(--water-soft); color: var(--water); padding: 6px 12px; text-decoration: none; letter-spacing: .12em; }

.hero { text-align: center; padding-bottom: 64px; }
.hero-img { display: block; width: 100%; height: 62vh; min-height: 360px; max-height: 640px; object-fit: cover; object-position: 50% 62%; -webkit-mask-image: linear-gradient(180deg, #000 78%, transparent 100%); mask-image: linear-gradient(180deg, #000 78%, transparent 100%); }
.hero .in { position: relative; max-width: 560px; margin: -36px auto 0; padding: 0 24px; }
.notice { display: inline-block; border: 1px solid var(--water-soft); color: var(--water); font-size: 12.5px; padding: 5px 14px; letter-spacing: .12em; margin: 0 0 30px; line-height: 1.8; }
.kicker { font-size: 13px; color: var(--muted); letter-spacing: .24em; margin: 0 0 10px; }
h1 { font-size: 58px; font-weight: 500; letter-spacing: .24em; margin: 0 -.24em 0 0; line-height: 1.3; }
.ruby { font-size: 13px; color: var(--muted); letter-spacing: .4em; margin: 6px -.4em 30px 0; }
.catch { font-size: 20px; line-height: 2; margin: 0 0 30px; }
.facts { list-style: none; padding: 0; margin: 0 auto 8px; max-width: 360px; font-size: 13.5px; line-height: 2; color: var(--muted); }

.btn { display: block; text-align: center; text-decoration: none; padding: 16px; margin: 28px 0 10px; background: var(--line-green); color: #fff; font-weight: 700; letter-spacing: .12em; border-radius: 2px; }
.btn:hover { filter: brightness(1.06); }
.hero .btn { max-width: 360px; margin-left: auto; margin-right: auto; }

section { padding: 72px 24px; max-width: 640px; margin: 0 auto; }
section + section { border-top: 1px solid var(--line); }
h2 { text-align: center; font-size: 24px; font-weight: 500; line-height: 1.8; letter-spacing: .14em; margin: 0 0 40px; }
.center { text-align: center; }

.cases { display: grid; gap: 16px; margin: 32px 0; }
.case { background: var(--panel); border-left: 2px solid var(--water); padding: 20px 20px 2px; }
.case h3 { font-size: 17px; font-weight: 500; color: var(--water); letter-spacing: .2em; margin: 0 0 8px; line-height: 1.6; }
.case p { font-size: 14.5px; line-height: 2; }

.full { text-align: center; border: 1px solid var(--water-soft); background: var(--bg2); padding: 24px 18px 4px; margin: 36px 0; }
.full .big { font-size: 19px; color: var(--water); line-height: 1.8; margin-bottom: 10px; }

.photo { display: block; width: 100%; object-fit: cover; margin: 8px 0 36px; }
.photo.stones { height: 340px; object-position: 50% 48%; }
.photo.candle { height: 360px; object-position: 50% 62%; }
.creed { font-size: 21px; line-height: 2; text-align: center; color: #f4fafb; margin: 0 0 40px; }

.steps-note { font-size: 13px; color: var(--water); letter-spacing: .24em; text-align: center; margin: 0 0 8px; }

footer { text-align: center; padding: 44px 24px 32px; border-top: 1px solid var(--line); }
footer .brand { margin-bottom: 14px; }
footer p { font-size: 11px; color: var(--muted); margin: 0; }

.sticky { position: fixed; left: 0; right: 0; bottom: 0; z-index: 30; padding: 10px 16px calc(10px + env(safe-area-inset-bottom)); background: rgba(11,22,34,.92); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); border-top: 1px solid var(--line); }
.sticky .btn { margin: 0 auto; max-width: 560px; padding: 13px; }

@media (max-width: 420px) {
  section { padding: 60px 20px; }
  .hero { padding-bottom: 52px; }
  .hero .in { padding: 0 20px; }
  h1 { font-size: 48px; }
  .catch { font-size: 18px; }
  .photo { display: block; width: 100%; object-fit: cover; margin: 8px 0 36px; }
.photo.stones { height: 340px; object-position: 50% 48%; }
.photo.candle { height: 360px; object-position: 50% 62%; }
.creed { font-size: 18px; }
  h2 { font-size: 21px; }
}

.btn.ghost { background: transparent; color: var(--water); border: 1px solid var(--water-soft); font-weight: 500; }
.bar nav { display: flex; gap: 8px; }

/* 自己紹介ページ */
.page-head { text-align: center; }
.page-img { display: block; width: 100%; height: 300px; object-fit: cover; object-position: 50% 62%; -webkit-mask-image: linear-gradient(180deg, #000 72%, transparent 100%); mask-image: linear-gradient(180deg, #000 72%, transparent 100%); }
.page-head .in { max-width: 640px; margin: -20px auto 0; padding: 0 24px; position: relative; }
.page-title { font-size: 28px; font-weight: 500; letter-spacing: .18em; margin: 0 0 8px; line-height: 1.6; }
.page-sub { color: var(--muted); font-size: 13px; letter-spacing: .2em; margin: 0; }
.prose p { text-wrap: pretty; }
.toc { list-style: none; padding: 0; margin: 0; }
.toc li { border-bottom: 1px solid var(--line); }
.toc a { display: block; padding: 12px 4px; text-decoration: none; font-size: 14px; line-height: 1.8; color: var(--text); }
.qa { scroll-margin-top: 70px; }
.qa h2 { text-align: left; font-size: 20px; letter-spacing: .08em; line-height: 1.8; margin: 0 0 26px; padding-left: 36px; position: relative; }
.qa h2::before { content: "Q"; position: absolute; left: 0; top: -2px; font-size: 24px; color: var(--water); }
.qa .answer { font-size: 17px; color: #f4fafb; line-height: 2; }
@media (max-width: 420px) { .page-title { font-size: 24px; } .qa h2 { font-size: 18px; } }
.bar a.brand.home { border: 0; padding: 0; color: var(--text); font-size: 18px; letter-spacing: .28em; }
.prose p, .qa h2, .toc a { word-break: keep-all; overflow-wrap: anywhere; }
@media (max-width: 420px) { .prose p { letter-spacing: .05em; } }