*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
a{color:inherit}
ul,ol{list-style:none}
@media (prefers-reduced-motion: reduce){*{transition:none!important;scroll-behavior:auto!important}}
:root{
  --ink:#1c1c1c;--sub:#555;--yellow:#f2c230;--yellow-pale:#fbecb5;
  --bg:#fff;--pale:#f2f2f2;--line:#cfcfcf;
  --ff-h:'Dela Gothic One',sans-serif;--ff:'Kosugi',sans-serif;
  --w:1000px;--wtext:700px;
}
body{font-family:var(--ff);color:var(--ink);background:var(--bg);font-size:16px;line-height:1.95;letter-spacing:.02em}
body.menu-open{overflow:hidden}
:focus-visible{outline:3px solid var(--ink);outline-offset:3px}
.wrap{max-width:var(--w);margin:0 auto;padding:0 24px}

/* header */
.hd{border-bottom:3px solid var(--ink);background:#fff}
.hd .wrap{display:flex;align-items:center;justify-content:space-between;min-height:68px;gap:16px}
.logo{font-family:var(--ff-h);font-size:19px;text-decoration:none;letter-spacing:.04em}
.menu-btn{font:inherit;font-size:14px;font-weight:700;background:var(--ink);color:#fff;border:none;padding:10px 18px 10px 44px;cursor:pointer;position:relative}
.menu-btn span{position:absolute;left:16px;width:18px;height:2px;background:var(--yellow)}
.menu-btn span:nth-child(1){top:15px}.menu-btn span:nth-child(2){top:21px}.menu-btn span:nth-child(3){top:27px}

/* overlay menu */
.menu{position:fixed;inset:0;background:var(--yellow);z-index:100;display:none;overflow-y:auto}
.menu.open{display:block}
.menu .wrap{padding-top:18px;padding-bottom:48px}
.menu-top{display:flex;justify-content:space-between;align-items:center;min-height:50px;margin-bottom:28px}
.menu-close{font:inherit;font-size:14px;font-weight:700;background:var(--ink);color:#fff;border:none;padding:10px 18px;cursor:pointer}
.menu ul{border-top:3px solid var(--ink)}
.menu li{border-bottom:1px solid var(--ink)}
.menu a{display:block;padding:16px 4px;font-family:var(--ff-h);font-size:clamp(20px,3.4vw,28px);text-decoration:none}
.menu a:hover{background:rgba(255,255,255,.35)}
.menu a[aria-current="page"]{text-decoration:underline;text-decoration-thickness:3px;text-underline-offset:6px}

/* top */
.hero{background:var(--yellow);border-bottom:3px solid var(--ink)}
.hero .wrap{padding-top:64px;padding-bottom:60px}
.hero h1{font-family:var(--ff-h);font-weight:400;font-size:clamp(24px,4.2vw,40px);line-height:1.45;max-width:24em;margin-bottom:22px}
.hero h1 small{display:block;font-family:var(--ff);font-size:clamp(15px,2vw,19px);font-weight:700;margin-top:10px;line-height:1.6}
.hero p{max-width:40em}
.checks{padding:56px 0 20px}
.checks h2{font-family:var(--ff-h);font-weight:400;font-size:22px;margin-bottom:22px}
.check-list{display:grid;grid-template-columns:1fr 1fr;border-top:1px solid var(--ink);border-left:1px solid var(--ink)}
.check-list li{border-right:1px solid var(--ink);border-bottom:1px solid var(--ink)}
.check-list a{display:grid;grid-template-columns:30px 1fr;gap:4px 16px;padding:22px 22px 24px;text-decoration:none;height:100%;align-content:start}
.check-list li:last-child:nth-child(odd){grid-column:1 / -1}
.check-list a::before{content:"";grid-row:1 / span 2;width:24px;height:24px;border:3px solid var(--ink);margin-top:4px;background:#fff}
.check-list a:hover{background:var(--yellow-pale)}
.check-list a:hover::before{background:var(--yellow)}
.check-list strong{font-family:var(--ff-h);font-weight:400;font-size:19px;line-height:1.5}
.check-list span{color:var(--sub);font-size:14.5px;line-height:1.8}

/* sub page */
.page{padding:56px 0 24px}
.page-title{font-family:var(--ff-h);font-weight:400;font-size:clamp(26px,4.4vw,40px);line-height:1.4;padding-bottom:18px;border-bottom:3px solid var(--ink);margin-bottom:28px}
.body{max-width:var(--wtext)}
.body section{padding:30px 0;border-bottom:1px solid var(--ink)}
.body section:last-child{border-bottom:none}
.body h2{font-family:var(--ff-h);font-weight:400;font-size:clamp(19px,2.6vw,23px);line-height:1.5;margin-bottom:14px;display:flex;align-items:baseline;gap:10px}
.body h2::before{content:"";flex:none;width:.62em;height:.62em;background:var(--ink);transform:translateY(-.05em)}
.body h2 span{background:linear-gradient(transparent 62%,var(--yellow) 62%)}
.body p{margin-bottom:14px}
.body p:last-child{margin-bottom:0}
.others{margin-top:48px;background:var(--pale);padding:26px 26px 22px;max-width:var(--wtext)}
.others h2{font-family:var(--ff-h);font-weight:400;font-size:17px;margin-bottom:10px}
.others ul{display:grid;grid-template-columns:1fr 1fr;gap:0 24px}
.others a{display:block;padding:9px 0;border-bottom:1px solid var(--line);text-decoration:none}
.others a:hover{text-decoration:underline;text-underline-offset:4px}

/* sitemap / links */
.sitemap-list{max-width:var(--wtext)}
.sitemap-list li{padding:18px 0 18px 26px;border-bottom:1px solid var(--line);position:relative}
.sitemap-list li::before{content:"";position:absolute;left:0;top:27px;width:12px;height:12px;background:var(--ink)}
.sitemap-list a{font-weight:700;font-size:17px;text-underline-offset:4px}
.sitemap-list p{color:var(--sub);font-size:14.5px;margin-top:4px}
.pending{max-width:var(--wtext);padding:28px 24px;border:1px solid var(--ink);background:var(--pale)}

/* footer */
.ft{background:var(--yellow);border-top:3px solid var(--ink);margin-top:72px}
.ft .wrap{padding-top:36px;padding-bottom:22px}
.ft-name{font-family:var(--ff-h);font-size:20px;margin-bottom:16px}
.ft-nav ul{display:flex;flex-wrap:wrap;gap:6px 22px;font-size:14px;padding-bottom:18px;border-bottom:1px solid var(--ink)}
.ft-nav a{text-underline-offset:4px}
.ft-copy{font-size:12px;padding-top:14px}

@media(max-width:720px){
  .check-list,.others ul{grid-template-columns:1fr}
  .hero .wrap{padding-top:44px;padding-bottom:40px}
  .logo{font-size:16px}
}