:root{
  --bg:#f7f5f0; --paper:#fffdf8; --ink:#1f2a3a; --ink-soft:#5a6474;
  --navy:#1f2f4d; --gold:#c9a84c; --gold-soft:#f3ead0;
  --line:#e3ded3; --radius:12px; --maxw:780px;
}
*{box-sizing:border-box}
body{margin:0;font-family:"Hiragino Mincho ProN","Yu Mincho","Noto Serif JP",serif;background:var(--bg);color:var(--ink);line-height:1.95;font-size:16px}
a{color:var(--navy)}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 18px}

.head{background:var(--navy);color:#fff}
.head .wrap{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:8px 16px;padding:12px 18px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:#fff}
.brand .mark{width:36px;height:36px}
.brand b{font-size:16px;letter-spacing:.08em;display:block}
.brand small{font-size:11px;color:#d9d3c2;font-family:sans-serif;letter-spacing:.04em}
.nav{display:flex;flex-wrap:wrap;gap:12px;font-size:12.5px;font-family:sans-serif}
.nav a{color:#e8e2d0;text-decoration:none;white-space:nowrap;border-bottom:1px solid transparent}
.nav a:hover{border-color:var(--gold);color:#fff}
.notice{background:var(--gold-soft);border-bottom:1px solid var(--line);font-size:12px;color:#6a5a2a;font-family:sans-serif;line-height:1.6}
.notice .wrap{padding:7px 18px}

.hero{padding:42px 0 20px}
.hero h1{font-size:30px;line-height:1.4;margin:0 0 14px;letter-spacing:.02em}
.hero .lead{font-size:16px;color:var(--ink-soft);margin:0}
.eyebrow{display:inline-block;font-family:sans-serif;font-size:11px;letter-spacing:.2em;color:var(--gold);border:1px solid var(--gold);padding:3px 10px;border-radius:999px;margin-bottom:14px}

section{padding:24px 0}
h2{font-size:21px;margin:0 0 14px;padding-bottom:8px;border-bottom:2px solid var(--gold);letter-spacing:.03em}
h3{font-size:17px;margin:22px 0 8px}
p{margin:0 0 14px}
ul,ol{padding-left:1.3em;margin:0 0 14px}
li{margin-bottom:6px}
.quiet{color:var(--ink-soft);font-size:13.5px;font-family:sans-serif}

.cards{display:grid;gap:12px;margin:12px 0}
@media(min-width:640px){.cards{grid-template-columns:1fr 1fr}}
.card{display:block;text-decoration:none;color:var(--ink);background:var(--paper);border:1px solid var(--line);border-left:4px solid var(--gold);border-radius:var(--radius);padding:16px 18px;transition:transform .15s}
.card:hover{transform:translateY(-2px)}
.card .en{font-family:sans-serif;font-size:11px;letter-spacing:.2em;color:var(--gold)}
.card b{display:block;font-size:18px;margin:4px 0 6px}
.card span{font-size:14px;color:var(--ink-soft)}

.cmp{width:100%;border-collapse:collapse;font-size:14px;margin:12px 0 16px;background:var(--paper);font-family:sans-serif}
.cmp th,.cmp td{padding:9px 10px;border:1px solid var(--line);vertical-align:top;text-align:left}
.cmp th{background:var(--gold-soft);font-weight:600}
@media(max-width:520px){.cmp{font-size:12.5px}.cmp th,.cmp td{padding:7px 6px}}

.pair{display:grid;gap:12px;margin:12px 0}
@media(min-width:620px){.pair{grid-template-columns:1fr 1fr}}
.box{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:14px 16px}
.box h4{margin:0 0 8px;font-size:15px;font-family:sans-serif}
.box.good h4{color:#3f6b4a}.box.bad h4{color:#9a4a3a}
.box p{margin:0;font-size:14.5px}

.steps{counter-reset:s;list-style:none;padding:0;margin:12px 0}
.steps li{position:relative;padding:10px 12px 10px 46px;background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);margin-bottom:8px}
.steps li::before{counter-increment:s;content:counter(s);position:absolute;left:12px;top:11px;width:26px;height:26px;border-radius:50%;background:var(--navy);color:var(--gold);font-family:sans-serif;font-size:13px;display:flex;align-items:center;justify-content:center}

.related{display:flex;flex-wrap:wrap;gap:8px;margin:10px 0}
.related a{font-family:sans-serif;font-size:13px;background:var(--paper);border:1px solid var(--line);border-radius:999px;padding:5px 12px;text-decoration:none;color:var(--ink-soft)}
.related a:hover{border-color:var(--gold);color:var(--navy)}

.cta{background:var(--navy);color:#fff;border-radius:var(--radius);padding:24px 20px;margin:32px 0;text-align:center}
.cta p{margin:0 0 12px;font-size:15px}
.cta .quiet{color:#cfc8b4}
.btn{display:inline-block;background:var(--gold);color:var(--navy);text-decoration:none;padding:13px 26px;border-radius:999px;font-weight:700;font-family:sans-serif;font-size:15px;line-height:1.3}
.btn small{display:block;font-weight:normal;font-size:12px;margin-top:3px}

.foot{background:var(--paper);border-top:1px solid var(--line);margin-top:30px;padding:26px 0 40px;font-size:12.5px;color:var(--ink-soft);font-family:sans-serif;line-height:1.7}
.foot .links{display:flex;flex-wrap:wrap;gap:10px 14px;margin-bottom:12px}
.foot a{color:var(--ink-soft)}
@media(max-width:480px){.hero h1{font-size:25px}h2{font-size:19px}}

.hero-img{margin:0 0 8px;text-align:center}
.hero-img img{width:100%;max-width:640px;border-radius:var(--radius);box-shadow:0 10px 28px rgba(31,42,58,.14);border:1px solid var(--line)}
.card.has-thumb{display:flex;gap:14px;align-items:center}
.card.has-thumb .thumb{width:88px;height:88px;object-fit:cover;border-radius:8px;flex:0 0 88px}
.card.has-thumb>div{min-width:0}