:root{--green:#006B4D;--green-d:#00513a;--green-l:#e8f3ef;--gold:#E3B55B;--ink:#1d2a26;--muted:#5b6b66;--line:#dde6e3;--bg:#fbfcfb;--radius:14px}
*{box-sizing:border-box}
html[data-lang="ja"] [data-lang="en"],html[data-lang="en"] [data-lang="ja"]{display:none!important}
body{margin:0;font-family:system-ui,-apple-system,"Segoe UI","Hiragino Sans","Noto Sans JP","Yu Gothic UI",Meiryo,sans-serif;color:var(--ink);background:var(--bg);line-height:1.75;-webkit-text-size-adjust:100%}
a{color:var(--green)}a:hover{color:var(--green-d)}
img{max-width:100%;height:auto}
.wrap{max-width:1040px;margin:0 auto;padding:0 20px}
.skip{position:absolute;left:-9999px}.skip:focus{left:8px;top:8px;background:#fff;padding:8px;z-index:10}
.site-header{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:5}
.header-inner{display:flex;align-items:center;gap:16px;min-height:64px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:1.15rem;color:var(--ink);text-decoration:none;letter-spacing:.06em}
.nav{display:flex;gap:4px;margin-left:auto;flex-wrap:wrap}
.nav a{padding:6px 10px;border-radius:8px;text-decoration:none;color:var(--ink);font-size:.95rem}
.nav a:hover,.nav a[aria-current="page"]{background:var(--green-l);color:var(--green-d)}
.lang-switch{display:flex;border:1px solid var(--line);border-radius:999px;overflow:hidden}
.lang-switch button{border:0;background:#fff;padding:5px 12px;font:inherit;font-size:.85rem;cursor:pointer;color:var(--muted)}
.lang-switch button[aria-pressed="true"]{background:var(--green);color:#fff}
main{padding:32px 20px 56px}
h1{font-size:clamp(1.5rem,3.6vw,2.1rem);line-height:1.35;margin:.2em 0 .6em}
h2{font-size:1.25rem;margin:2.2em 0 .7em;padding-bottom:.35em;border-bottom:2px solid var(--green-l)}
h3{font-size:1.05rem;margin:1.6em 0 .4em}
.lead{font-size:1.08rem;color:var(--muted)}
.muted{color:var(--muted)}.small{font-size:.9rem}
.todo{background:#fff4d6;color:#7a5200;padding:0 .3em;border-radius:4px}
.hero{background:linear-gradient(135deg,var(--green) 0%,#0b8a64 100%);color:#fff;border-radius:var(--radius);padding:clamp(28px,6vw,56px);margin-bottom:36px}
.hero h1{color:#fff;margin-top:0}.hero p{color:#e5f4ee;max-width:44em}
.hero .btn{background:#fff;color:var(--green-d)}
.btn{display:inline-block;background:var(--green);color:#fff;padding:10px 18px;border-radius:10px;text-decoration:none;font-weight:600;border:0;font:inherit;font-weight:600;cursor:pointer}
.btn:hover{background:var(--green-d);color:#fff}.btn.ghost{background:transparent;color:var(--green);border:1px solid var(--green)}
.grid{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(230px,1fr))}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px}
.card h3{margin-top:0}
.card a.more{font-weight:600;text-decoration:none}
.app-card{display:grid;grid-template-columns:96px 1fr;gap:20px;align-items:start}
.app-icon{width:96px;height:96px;border-radius:22px;background:var(--green);display:grid;place-items:center}
ul.features{padding-left:1.2em;margin:.6em 0}
table{border-collapse:collapse;width:100%;background:#fff}
th,td{border:1px solid var(--line);padding:10px 12px;text-align:left;vertical-align:top}
th{background:var(--green-l);width:30%;font-weight:600}
.table-scroll{overflow-x:auto}
.table-scroll table th{width:auto}
.notice{background:#fff8e6;border:1px solid #f0d48f;border-radius:10px;padding:14px 16px;margin:16px 0}
.info{background:var(--green-l);border-radius:10px;padding:14px 16px;margin:16px 0}
details{background:#fff;border:1px solid var(--line);border-radius:10px;padding:12px 16px;margin:10px 0}
summary{cursor:pointer;font-weight:600}
form .field{margin:14px 0}
label{display:block;font-weight:600;margin-bottom:4px}
input[type=email],input[type=text],select,textarea{width:100%;padding:10px 12px;border:1px solid #b9c8c3;border-radius:8px;font:inherit;background:#fff}
textarea{min-height:96px}
.check label{display:inline;font-weight:400}
ol.steps li{margin:.4em 0}
.toc{columns:2;gap:24px;padding-left:1.2em}
.site-footer{background:#11251f;color:#cfe0da;padding:36px 0 18px;font-size:.92rem}
.site-footer a{color:#fff}
.site-footer .muted{color:#a9bfb8}
.footer-grid{display:grid;gap:24px;grid-template-columns:1fr 1fr}
.brand-foot{font-weight:700;letter-spacing:.06em;color:#fff;margin:0 0 6px}
.foot-links{list-style:none;padding:0;margin:0;display:grid;gap:6px}
.copy{color:#8ea59e;font-size:.82rem;margin-top:24px}
@media (max-width:720px){.header-inner{padding:8px 0}.nav{order:3;width:100%;margin-left:0;overflow-x:auto;flex-wrap:nowrap}.nav a{white-space:nowrap}.lang-switch{margin-left:auto}.footer-grid{grid-template-columns:1fr}.app-card{grid-template-columns:1fr}.toc{columns:1}th{width:38%}}