/* AI顧問 共通デザインシステム（静かな高級・固定ページ用） */
:root{
  --paper:#F4F0E7; --paper-2:#FBF8F1; --ink:#1E1B15; --ink-soft:#3c372d; --note:#857c69;
  --gold:#A8843E; --gold-soft:#bd9b54; --line:#e2dac9; --line-soft:#ece5d6; --green:#2f6b52;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:'Zen Kaku Gothic New',sans-serif;color:var(--ink-soft);background:var(--paper);
  line-height:2;-webkit-font-smoothing:antialiased;font-size:16px;overflow-x:hidden}
h1,h2,h3,.mincho{font-family:'Shippori Mincho',serif;color:var(--ink);font-weight:700;line-height:1.62}
h1,h2,h3,.lead,.btn,summary{word-break:auto-phrase;text-wrap:balance}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
.wrap{max-width:1180px;margin:0 auto;padding:0 32px}
.wrap-n{max-width:1040px;margin:0 auto;padding:0 32px}
.sec{padding:120px 0}
@media(max-width:768px){.sec{padding:72px 0}body{font-size:15px}.wrap,.wrap-n{padding:0 22px}}

.eyebrow{display:inline-flex;align-items:center;font-size:12px;letter-spacing:.28em;color:var(--ink);font-weight:700}
.eyebrow::before{content:"";width:38px;height:1px;background:var(--gold);margin-right:16px;flex:0 0 auto}

.btn{display:inline-flex;align-items:center;font-weight:700;background:var(--ink);color:var(--paper);
  padding:16px 34px;font-size:14px;letter-spacing:.06em;border:1px solid var(--ink);transition:background .3s,color .3s}
.btn:hover{background:transparent;color:var(--ink)}
.btn-line{padding:11px 22px;font-size:13px}
.btn-gold{background:var(--gold);border-color:var(--gold);color:#fff}
.btn-gold:hover{background:transparent;color:var(--gold)}

/* header */
.c-head{position:fixed;top:0;left:0;width:100%;z-index:60;display:flex;align-items:center;justify-content:space-between;
  padding:14px 34px;background:rgba(244,240,231,.9);backdrop-filter:blur(10px);box-shadow:0 1px 0 var(--line)}
.c-head__brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.c-head__brand img{width:38px;height:38px;object-fit:contain}
.c-head__name{font-family:'Shippori Mincho',serif;font-weight:700;font-size:21px;color:var(--ink);letter-spacing:.08em;white-space:nowrap}
.c-head__nav{display:flex;align-items:center;gap:34px}
.c-head__nav a.lnk{font-size:13px;letter-spacing:.04em;color:var(--ink);opacity:.7}
.c-head__nav a.lnk:hover{opacity:1}
@media(max-width:900px){.c-head__nav a.lnk{display:none}.c-head{padding:12px 20px}.c-head__name{font-size:18px}.c-head .btn-line{padding:10px 16px;font-size:12px}}

/* page hero（固定ページ） */
.c-page-hero{position:relative;background:var(--paper-2);padding:170px 0 70px;border-bottom:1px solid var(--line)}
.c-page-hero h1{font-size:clamp(30px,4.4vw,46px)}
.c-page-hero .eyebrow{margin-bottom:16px}

/* prose */
.c-prose{max-width:820px;margin:0 auto}
.c-prose h2{font-family:'Shippori Mincho',serif;font-size:clamp(20px,2.4vw,26px);margin:44px 0 14px;padding-bottom:10px;border-bottom:1px solid var(--line)}
.c-prose h2:first-child{margin-top:0}
.c-prose p{margin:12px 0;font-size:15.5px;color:var(--ink-soft);line-height:1.95}
.c-prose ul{margin:12px 0 12px 1.3em}
.c-prose li{margin:7px 0;font-size:15.5px;color:var(--ink-soft);line-height:1.9}
.c-prose a{color:var(--gold);text-decoration:underline}

/* footer */
.c-foot{background:var(--ink);color:rgba(244,240,231,.7);padding:72px 0 36px}
.c-foot__top{display:flex;justify-content:space-between;gap:40px;flex-wrap:wrap;align-items:flex-start}
.c-foot__brand{display:flex;align-items:center;gap:13px}
.c-foot__brand img{width:42px;height:42px;object-fit:contain}
.c-foot__brand b{font-family:'Shippori Mincho',serif;font-size:22px;color:var(--paper);letter-spacing:.08em}
.c-foot__nap{font-size:13px;line-height:2;margin-top:18px;max-width:560px}
.c-foot__nap a{color:var(--gold-soft)}
.c-foot__links{display:flex;gap:24px;font-size:12.5px;flex-wrap:wrap;letter-spacing:.04em}
.c-foot__copy{margin-top:44px;padding-top:22px;border-top:1px solid rgba(244,240,231,.12);font-size:11.5px;color:rgba(244,240,231,.45)}
@media(max-width:768px){.c-foot__top{flex-direction:column;gap:26px}}