:root{
  --ink:#201a17;--paper:#f7f3ec;--card:#fffbf3;--line:#e6dcc9;
  --accent:#df5f3f;--berry:#a63d8f;--teal:#0f8b8d;--mut:#796b5c;--maxw:1140px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{background:var(--paper);color:var(--ink);font-family:"Hiragino Kaku Gothic ProN","Yu Gothic","Noto Sans JP",system-ui,sans-serif;line-height:1.75}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;display:block}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 26px}
ul.list{margin:16px 0 0 22px}
ul.list li{margin-bottom:9px}
code{background:#efe7d8;padding:2px 7px;border-radius:6px;font-size:.88em;color:var(--berry)}

/* header — friendly rounded pill nav */
header.site{position:sticky;top:0;z-index:50;background:var(--paper);border-bottom:1px solid var(--line)}
.top{display:flex;align-items:center;justify-content:space-between;height:70px}
.logo{display:flex;align-items:center;gap:12px;font-weight:900}
.logo .mark{width:40px;height:40px;border-radius:14px;background:var(--accent);display:flex;align-items:center;justify-content:center;color:#fff;font-size:1.15rem;transform:rotate(-6deg)}
.logo .word{font-size:1.3rem;letter-spacing:.02em}
.logo .word b{color:var(--accent)}
nav.main{display:flex;gap:12px;align-items:center;font-size:.92rem;flex-wrap:wrap}
nav.main a{padding:8px 14px;border-radius:999px;color:#4a3f33;font-weight:700}
nav.main a:hover,nav.main a.active{background:var(--accent);color:#fff}
.nav-toggle{display:none;background:none;border:0;font-size:1.7rem;color:var(--ink);cursor:pointer}
.btn{display:inline-block;background:var(--accent);color:#fff;padding:13px 30px;border-radius:999px;font-weight:800;font-size:.92rem;box-shadow:0 5px 16px rgba(223,95,63,.28);transition:transform .15s,box-shadow .15s}
.btn:hover{transform:translateY(-2px)}
.btn.ghost{background:transparent;color:var(--accent);border:1.6px solid var(--accent);box-shadow:none}
.btn.berry{background:var(--berry)}
.btn.sm{padding:8px 18px;font-size:.86rem}

/* hero — centered warm */
.hero{padding:74px 0 60px;text-align:center;background:
  radial-gradient(circle at 12% 15%, #fbe3d5 0, transparent 45%),
  radial-gradient(circle at 88% 12%, #e4d9f4 0, transparent 45%),
  var(--paper)}
.hero .eyebrow{display:inline-block;color:var(--teal);font-weight:800;letter-spacing:.16em;font-size:.78rem;border:1px solid var(--line);background:#fff;padding:5px 16px;border-radius:999px;margin-bottom:20px}
.hero h1{font-size:clamp(2.5rem,6.6vw,4.4rem);line-height:1.06;font-weight:900;letter-spacing:-.01em}
.hero h1 em{color:var(--accent);font-style:normal}
.hero .sub{margin:24px auto 0;max-width:680px;color:#5c4f40;font-size:1.1rem}
.hero .cta-row{margin-top:34px;display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.hero .chips{margin-top:34px;display:flex;gap:10px;justify-content:center;flex-wrap:wrap}
.hero .chips span{background:#fff;border:1px solid var(--line);padding:7px 18px;border-radius:999px;color:var(--berry);font-weight:700;font-size:.86rem}

/* sections */
section.blk{padding:60px 0}
section.blk.alt{background:#efe9dc}
section.blk.tint{background:#fbf0e6}
h2.sec{font-size:clamp(1.6rem,3.6vw,2.2rem);font-weight:900;margin-bottom:12px}
p.sec-sub{color:var(--mut);margin-bottom:34px;max-width:680px;font-size:.98rem}
.grid{display:grid;gap:22px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:26px;box-shadow:0 8px 20px rgba(60,40,20,.05)}
.card h3{font-size:1.13rem;margin-bottom:8px;font-weight:800}
.card .ico{width:34px;height:34px;border-radius:10px;background:var(--teal);color:#fff;display:flex;align-items:center;justify-content:center;font-size:1.1rem;margin-bottom:12px}
.card p{color:#54493c;font-size:.94rem}
.card.berry .ico{background:var(--berry)}
.card.coral .ico{background:var(--accent)}
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.panel{background:#fff;border:1px solid var(--line);border-radius:16px;padding:30px}
.panel h3{color:var(--berry);font-size:1.1rem;margin-bottom:14px;font-weight:800}
.ph-line{padding:13px 0;border-bottom:1px dashed var(--line);font-size:.92rem}
.ph-line:last-child{border-bottom:0}
.ph-line b{display:block;color:var(--ink);margin-bottom:2px}
.note{background:#f7ead6;border-left:4px solid var(--accent);padding:16px 20px;border-radius:10px;color:#5c4f40;font-size:.9rem;margin-top:26px}
.narrow{max-width:820px!important}
.term{background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px 22px;margin-bottom:12px;font-size:.92rem}
.term b{color:var(--teal)}
.term code{margin:0 2px}

/* table */
table.tb{width:100%;border-collapse:collapse;font-size:.92rem;background:#fff;border:1px solid var(--line)}
.tb th,.tb td{padding:13px 16px;border-bottom:1px solid var(--line);text-align:left}
.tb th{background:#efe9dc;font-weight:800}
.tb tr:last-child td{border-bottom:0}
.tb code{background:#f3ede0}

/* faq */
.faqwrap{display:flex;flex-direction:column;gap:12px}
.faq{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;box-shadow:0 4px 14px rgba(60,40,20,.04)}
.faq summary{padding:18px 22px;cursor:pointer;font-weight:700;list-style:none;display:flex;justify-content:space-between;align-items:center}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-size:1.3rem;color:var(--accent)}
.faq[open] summary::after{content:"–"}
.faq .a{padding:4px 22px 18px;color:#54493c;font-size:.93rem}

/* cta band */
.cta-band{background:var(--ink);color:#fff;border-radius:20px;padding:54px 48px;text-align:center;position:relative;overflow:hidden}
.cta-band::before{content:"";position:absolute;width:220px;height:220px;border-radius:50%;background:rgba(223,95,63,.25);top:-80px;right:-60px}
.cta-band::after{content:"";position:absolute;width:180px;height:180px;border-radius:50%;background:rgba(15,139,141,.2);bottom:-70px;left:-40px}
.cta-band h2{font-size:1.8rem;font-weight:900;position:relative}
.cta-band h2 em{color:var(--accent);font-style:normal}
.cta-band p{color:#cfc6b8;margin:12px 0 26px;max-width:600px;margin-left:auto;margin-right:auto;position:relative}
.cta-band .btn{position:relative}

/* page header */
.phead{padding:60px 0 34px;border-bottom:1px solid var(--line)}
.phead h1{font-size:clamp(2rem,4.6vw,3.1rem);font-weight:900;line-height:1.12}
.phead h1 em{color:var(--accent);font-style:normal}
.phead .lede{margin-top:16px;max-width:720px;color:var(--mut);font-size:1.04rem}
.crumb{font-size:.85rem;color:var(--mut);margin-bottom:18px}
.crumb a{color:var(--accent)}

/* footer */
footer.site{border-top:1px solid var(--line);margin-top:70px;padding:44px 0 36px;color:var(--mut);font-size:.88rem;background:#efe9dc}
.ft{display:flex;justify-content:space-between;gap:30px;flex-wrap:wrap}
.ft .brand{font-weight:900;color:var(--ink);font-size:1.05rem}
.ft .brand b{color:var(--accent)}
.ft nav{display:flex;gap:20px;flex-wrap:wrap}
.ft nav a:hover{color:var(--accent)}

@media(max-width:880px){
  .g3,.g2,.g4{grid-template-columns:1fr 1fr}
  .g3 div:nth-child(n){ }
  @media(max-width:600px){.g3,.g2,.g4{grid-template-columns:1fr}}
  .g3,.g2{grid-template-columns:1fr}
  .split{grid-template-columns:1fr;gap:28px}
  .nav-toggle{display:block}
  nav.main{position:fixed;top:70px;left:0;right:0;background:#fff;flex-direction:column;align-items:flex-start;padding:18px 24px;gap:12px;border-bottom:1px solid var(--line);display:none}
  nav.main.open{display:flex}
  .hero{padding:54px 0 46px}
  .cta-band{padding:42px 26px}
}