:root{--bg:#f6f3ec;--deep:#123b3c;--primary:#d7ae59;--gold-text:#8a6519;--text:#123436;--muted:#5b6d6c;--line:rgba(18,52,54,.12)}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--text);font-family:"Inter",system-ui,-apple-system,"Segoe UI",Arial,sans-serif;line-height:1.7}
a{color:var(--deep)}
img{max-width:100%;display:block}
:focus-visible{outline:3px solid #2f7773;outline-offset:3px;border-radius:6px}
.container{width:min(calc(100% - 36px),820px);margin:auto}
header{background:#fff;border-bottom:1px solid var(--line)}
.nav{min-height:84px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none}
.brand-mark{height:48px;width:auto;flex:none}
.brand-type{display:block;line-height:1;white-space:nowrap}
.brand-name{display:block;font-size:1.28rem;font-weight:800;letter-spacing:-.005em;color:var(--text)}
.brand-sub{display:block;margin-top:5px;font-size:.58rem;font-weight:600;letter-spacing:.32em;color:var(--gold-text)}
.back{font-weight:700;font-size:.92rem;text-decoration:none;color:var(--deep);border:1px solid var(--line);padding:10px 16px;border-radius:12px;background:#fff;white-space:nowrap}
main{padding:56px 0 70px}
.kicker{font-size:.74rem;letter-spacing:.12em;text-transform:uppercase;color:var(--gold-text);font-weight:700;margin:0}
h1{font-size:clamp(2rem,4vw,2.8rem);line-height:1.08;letter-spacing:-.03em;margin:10px 0 8px;font-weight:800}
.updated{color:var(--muted);font-size:.9rem;margin:0 0 36px}
.chapo{font-size:1.06rem;color:#2c4142;border-left:3px solid var(--primary);padding-left:16px;margin:0 0 34px}
h2{font-size:1.25rem;letter-spacing:-.01em;margin:38px 0 10px;padding-top:24px;border-top:1px solid var(--line)}
h2:first-of-type{border-top:0;padding-top:0}
h3{font-size:1.02rem;margin:22px 0 6px}
p,li{color:#2c4142}
ul{padding-left:20px}
li{margin-bottom:6px}
dl{display:grid;grid-template-columns:auto 1fr;gap:8px 18px;margin:14px 0;background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px;align-items:start}
dt{font-weight:700;color:var(--deep)}
dd{margin:0;color:#2c4142}
dd a{color:var(--deep)}
.todo{background:#fff8e6;border:1px solid rgba(215,174,89,.55);border-left:4px solid var(--primary);border-radius:12px;padding:16px 18px;margin:22px 0;font-size:.94rem}
.todo strong{color:#7a5a12}
mark{background:#ffe9b8;padding:1px 5px;border-radius:4px;font-weight:600}
footer{background:#fff;border-top:1px solid var(--line);padding:26px 0;font-size:.86rem;color:var(--muted)}
.footer-in{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}
footer a{color:var(--deep)}
@media (max-width:560px){
  dl{grid-template-columns:1fr;gap:2px 0}
  dd{margin-bottom:10px}
  .brand-mark{height:40px}
  .brand-name{font-size:1.08rem}
  .brand-sub{font-size:.52rem;letter-spacing:.28em}
}