/* 先祖歴（家系図）：墨（水）と銀（金）の色。字はマックのヒラギノ、なければ Noto（Windows でも同じ見え方に） */
@import url("https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@400&family=Noto+Serif+JP:wght@500&display=swap");
:root {
  --ai: #5a6270; --tsuki: #a9a396; --ink: #2a2620; --sub: #6e665c; --line: #e8e0cf; --soft: #f7f2e8; --kin: #f4efe4; --bg: #ffffff;
  --mincho: "Hiragino Mincho ProN", "Hiragino Mincho Pro", "Noto Serif JP", serif;
  --gothic: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", sans-serif;
}
/* 質感：和紙の細かな地と、銀箔の光 */
:root {
  --gin: linear-gradient(135deg, #a9a396 0%, #e8e0cf 24%, #c3b9b0 46%, #fbf8f1 63%, #a9a396 100%);
  --washi: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 .3 0 0 0 0 .22 0 0 0 0 .12 0 0 0 .06 0'/%3E%3C/filter%3E%3Crect width='180' height='180' filter='url(%23n)'/%3E%3C/svg%3E");
}
* { box-sizing: border-box; }
/* iPhone が小さい字を勝手に大きくしないように */
html { -webkit-font-smoothing: antialiased; -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
body { margin: 0; background: var(--bg) var(--washi); color: var(--ink); font-family: var(--gothic); font-weight: 400; line-height: 1.9; letter-spacing: .02em; }
b, strong, th { font-weight: 400; }
a { color: var(--ai); }
.wrap { max-width: 760px; margin: 0 auto; padding: 24px 16px 60px; }
.top { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; color: var(--ai); margin-bottom: 26px; }
/* ロゴと名乗りの大きさは、姉妹の姓名月の読みものにそろえる（52px・24px） */
.top img { width: 52px; height: 52px; filter: drop-shadow(0 2px 6px rgba(31,47,82,.25)); }
/* ロゴに、ときどき光がすっと走る（先祖から光が流れてくる、の小さな合図） */
.top .mk { position: relative; display: inline-block; line-height: 0; border-radius: 50%; overflow: hidden; font-style: normal; flex: none; }
.top .mk::after { content: ""; position: absolute; inset: 0; border-radius: 50%; pointer-events: none;
  background: linear-gradient(115deg, rgba(255,255,255,0) 38%, rgba(255,255,255,.55) 50%, rgba(255,255,255,0) 62%);
  transform: translateX(-130%); animation: kirari 8s ease-in-out 1.5s infinite; }
@keyframes kirari { 0% { transform: translateX(-130%); } 16% { transform: translateX(130%); } 100% { transform: translateX(130%); } }
@media (prefers-reduced-motion: reduce) { .top .mk::after { animation: none; display: none; } }
.top span { font-family: var(--mincho); font-size: 1.5rem; letter-spacing: .3em; font-weight: 500; line-height: 1.3; }
.top ruby rt { font-family: var(--gothic); font-size: .36em; letter-spacing: .5em; color: var(--sub); }
.top small { display: none; }
h1 { font-family: var(--mincho); font-weight: 500; font-size: 1.6rem; color: var(--ai); letter-spacing: .1em; line-height: 1.55; margin: 0 0 18px; }
h2 { font-family: var(--mincho); font-weight: 500; font-size: 1.15rem; color: var(--ai); margin: 34px 0 8px; }
h3 { font-family: var(--gothic); font-weight: 400; color: var(--ai); font-size: 1rem; margin: 22px 0 6px; }
p, li { font-size: .98rem; }
.note { color: var(--sub); font-size: .88rem; }
.crumb { margin: -14px 0 14px; font-size: .82rem; color: var(--sub); }
.crumb a { color: var(--sub); }
.lead { font-size: 1.02rem; padding: 14px 0; border-top: 1px solid var(--tsuki); border-bottom: 1px solid var(--tsuki); }
.yomi h2 { padding-left: 12px; border-left: 3px solid var(--tsuki); }
.toc { margin: 22px 0 6px; padding: 14px 18px; background: var(--soft); border-radius: 12px; }
.toc p { margin: 0 0 4px; font-size: .85rem; color: var(--sub); }
.toc ol { margin: 0; padding-left: 1.4em; }
.toc li { font-size: .92rem; }
.toc a { text-decoration: none; }
table.hyo { border-collapse: collapse; width: 100%; margin: 8px 0 14px; }
table.hyo th { color: var(--sub); font-size: .82rem; padding: 6px 8px; text-align: left; border-bottom: 1px solid var(--tsuki); white-space: nowrap; }
table.hyo td { padding: 7px 8px; border-bottom: 1px solid var(--line); font-size: .95rem; vertical-align: top; }
table.hyo td:first-child { color: var(--ai); white-space: nowrap; }
.btn, button { display: inline-block; font: inherit; letter-spacing: .14em; padding: 12px 28px; border: 0; border-radius: 4px; color: #fbf8f1; background: linear-gradient(180deg, #646c7a, #5a6270); text-decoration: none; cursor: pointer;
  box-shadow: inset 0 1px 0 rgba(255,255,255,.08); transition: filter .2s, box-shadow .2s; }
.btn:hover, button:hover { filter: brightness(1.12); }
.btn.kin { background: var(--gin); color: var(--ai); }
button.usui, .btn.usui { background: var(--soft); color: var(--ai); border: 1px solid var(--line); }
button:disabled { opacity: .5; cursor: default; }
.cta { margin: 48px 0 0; padding: 34px 18px; text-align: center; background: #5a6270 var(--washi); border-radius: 4px; position: relative; }
.cta::before { content: ""; position: absolute; inset: 6px; border: 1px solid rgba(214,206,190,.35); border-radius: 2px; pointer-events: none; }
.cta p { color: #f4efe4 !important; }
.cta .note { color: #c2bcb0 !important; }
.cta .btn { background: var(--gin); color: #5a6270; }
.cta p { margin: 0 0 14px; font-family: var(--mincho); font-weight: 500; font-size: 1.1rem; letter-spacing: .12em; }
.cta .note { margin: 12px 0 0; font-family: var(--gothic); font-weight: 400; font-size: .82rem; }
.konkyo { margin: 44px 0 0; padding: 14px 0 0; border-top: 1px solid var(--line); }
.konkyo .konkyo-t { margin: 0 0 6px; font-size: .78rem; color: var(--sub); letter-spacing: .1em; }
.konkyo ul { margin: 0; padding-left: 1.2em; }
.konkyo li, .yomi .konkyo li { font-size: .74rem; line-height: 1.7; color: var(--sub); }
.konkyo a { color: var(--sub); }
.qa .q { margin: 18px 0 4px; color: var(--ai); font-family: var(--mincho); font-weight: 500; font-size: 1.02rem; }
.qa .q::before { content: "問　"; color: var(--tsuki); }
.foot { margin-top: 56px; padding: 22px 0 0; border-top: 1px solid rgba(169,163,150,.6); font-size: .85rem; color: var(--sub); }
.foot a { color: var(--ai); margin: 0 16px 6px 0; display: inline-block; text-decoration: none; }
.foot a:hover { color: #6a7280; }
.foot::after { content: "© 先祖歴"; display: block; margin-top: 14px; font-size: .78rem; letter-spacing: .1em; color: #a39b8f; }
.foot .sm { margin-top: 10px; font-size: .78rem; }

/* 入り口 */
.hero { text-align: center; padding: 18px 0 8px; }
.hero h1 { font-size: 1.9rem; }
.hero p { margin: 0 auto 20px; max-width: 34em; }
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 14px; margin: 16px 0; }
.card { display: block; padding: 16px 18px; border: 1px solid var(--line); border-radius: 14px; text-decoration: none; color: var(--ink); background: #fff; }
.card:hover { border-color: var(--tsuki); }
.card span { display: block; font-family: var(--mincho); font-weight: 500; color: var(--ai); font-size: 1.05rem; margin-bottom: 4px; }
.card small { color: var(--sub); font-size: .86rem; line-height: 1.7; display: block; }
.yakusoku { margin: 26px 0; padding: 16px 18px; background: var(--soft); border-radius: 12px; }
.yakusoku p { margin: 4px 0; font-size: .92rem; }

/* 計算の入力 */
.keisan { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin: 12px 0; padding: 16px; background: var(--kin); border-radius: 12px; }
.keisan select, .keisan input { font: inherit; padding: 8px 10px; border: 1px solid #d6cfbf; border-radius: 10px; background: #fff; }
.keisan input { width: 6em; }
.kotae { margin: 6px 0 18px; padding: 12px 16px; border-left: 3px solid var(--tsuki); background: #fff; font-size: 1.02rem; min-height: 1.9em; }

@media (min-width: 900px) {
  body:has(.yomi) { background: radial-gradient(ellipse at 20% 0%, #faf6ee 0%, #f3ede0 55%, #ece5d6 100%) fixed; }
  .wrap.yomi { max-width: 860px; margin: 40px auto 60px; padding: 44px 64px 56px; background: #fff; border-radius: 18px;
    box-shadow: 0 2px 6px rgba(31,47,82,.06), 0 18px 48px rgba(31,47,82,.10); }
  .yomi h1 { font-size: 2.05rem; }
  .yomi h2 { font-size: 1.4rem; margin-top: 52px; padding: 0 0 10px; border-left: 0; border-bottom: 1px solid rgba(169,163,150,.5); }
  .yomi p, .yomi li { font-size: 1.02rem; line-height: 2.05; }
}
@media (max-width: 560px) { table.hyo td, table.hyo th { padding: 6px 5px; } .hero h1 { font-size: 1.6rem; } }

/* ---- 高級な質感（全体の仕上げ） ---- */
h1 { letter-spacing: .16em; }
h2 { letter-spacing: .1em; }
.lead { border: 0; padding: 18px 0; position: relative; }
.lead::before, .lead::after { content: ""; position: absolute; left: 0; right: 0; height: 1px; background: var(--gin); }
.lead::before { top: 0; } .lead::after { bottom: 0; }
.yomi h2 { border-left: 0; padding-left: 0; }
.yomi h2::before { content: ""; display: inline-block; width: 7px; height: 7px; margin: 0 12px 3px 2px; transform: rotate(45deg); background: var(--gin); box-shadow: 0 0 0 1px rgba(90,98,112,.25); vertical-align: middle; }
.toc { border-radius: 4px; background: #fbf8f1; border: 1px solid #e8e0cf; }
.card, .yakusoku { border-radius: 4px; }
table.hyo th { border-bottom: 1px solid #a9a396; letter-spacing: .1em; }
.foot { border-top: 0; position: relative; }
.foot::before { content: ""; position: absolute; left: 0; right: 0; top: 0; height: 1px; background: var(--gin); }
@media (min-width: 900px) {
  body:has(.yomi) { background: #f4efe4 var(--washi); }
  .wrap.yomi { border-radius: 4px; position: relative; box-shadow: 0 1px 2px rgba(90,98,112,.06), 0 30px 60px rgba(90,98,112,.10); }
  .wrap.yomi::before { content: ""; position: absolute; inset: 10px; border: 1px solid #e8e0cf; border-radius: 2px; pointer-events: none; }
  .yomi h2 { border-bottom: 0; position: relative; }
  .yomi h2::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 1px; background: linear-gradient(90deg, #a9a396, rgba(169,163,150,0)); }
}