:root{--bg:#fbf8f3;--card:#fff;--ink:#22303a;--muted:#55636d;--brand:#1f6f5c;--brand-d:#174f42;--warm:#f3e7d6;--line:#e4dccf;--alert:#a3262a;--r:14px}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font:17px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;color:var(--ink);background:var(--bg)}
a{color:var(--brand-d)}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #e0a43a;outline-offset:2px}
.skip{position:absolute;left:-999px}.skip:focus{left:8px;top:8px;background:#fff;padding:8px;z-index:9}
.wrap{max-width:960px;margin:0 auto;padding:0 18px}
header.site{background:#fff;border-bottom:1px solid var(--line)}
header.site .wrap{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:8px;padding-top:12px;padding-bottom:12px}
.logo{font-weight:700;font-size:1.1rem;text-decoration:none;color:var(--ink)}
.logo span{color:var(--brand)}
nav ul{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:4px 14px;font-size:.95rem}
nav a{text-decoration:none;padding:4px 0}
nav a[aria-current=page]{font-weight:700;border-bottom:2px solid var(--brand)}
.notice{background:var(--warm);font-size:.9rem;padding:8px 0;text-align:center}
.notice strong{color:var(--alert)}
main{padding:28px 0 40px}
h1{font-size:clamp(1.7rem,5vw,2.4rem);line-height:1.2;margin:.2em 0 .4em}
h2{font-size:1.35rem;margin:1.6em 0 .5em}
h3{font-size:1.08rem;margin:0 0 .3em}
.lead{font-size:1.15rem;color:var(--muted)}
.grid{display:grid;gap:14px;grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:16px 18px}
.card p{margin:.3em 0 0;color:var(--muted);font-size:.97rem}
.tag{display:inline-block;font-size:.75rem;font-weight:700;letter-spacing:.03em;text-transform:uppercase;background:var(--warm);color:#6b4a16;border-radius:99px;padding:2px 10px;margin-bottom:6px}
.btn{display:inline-block;background:var(--brand);color:#fff;border:0;border-radius:10px;padding:12px 20px;font:inherit;font-weight:600;text-decoration:none;cursor:pointer;min-height:44px}
.btn:hover{background:var(--brand-d)}
.btn.ghost{background:transparent;color:var(--brand-d);border:2px solid var(--brand)}
.hero{display:grid;gap:24px;align-items:start}
@media(min-width:820px){.hero{grid-template-columns:1.2fr 1fr}}
table{width:100%;border-collapse:collapse;background:#fff;border-radius:var(--r);overflow:hidden;font-size:.95rem}
th,td{border-bottom:1px solid var(--line);padding:10px 12px;text-align:left;vertical-align:top}
th{background:var(--warm)}
.tablewrap{overflow-x:auto}
form.lead{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:18px}
form.lead h2{margin-top:0}
.field{margin-bottom:12px}
label{display:block;font-weight:600;font-size:.95rem;margin-bottom:4px}
input,select{width:100%;font:inherit;padding:10px 12px;border:1px solid #b9b0a2;border-radius:10px;background:#fff;min-height:44px}
.hint{font-size:.85rem;color:var(--muted);margin:2px 0 0}
.hp{position:absolute;left:-5000px;width:1px;height:1px;overflow:hidden}
.msg{margin-top:10px;font-weight:600}.msg.err{color:var(--alert)}.msg.ok{color:var(--brand-d)}
details{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:12px 16px;margin-bottom:10px}
summary{font-weight:600;cursor:pointer}
footer.site{border-top:1px solid var(--line);background:#fff;font-size:.9rem;color:var(--muted);padding:22px 0 90px}
footer.site p{margin:.3em 0}
/* chat */
#chat-open{position:fixed;right:16px;bottom:16px;z-index:50;border-radius:99px;box-shadow:0 4px 14px rgba(0,0,0,.18)}
#chat-panel{position:fixed;right:12px;bottom:12px;z-index:60;width:min(380px,calc(100vw - 24px));max-height:min(560px,calc(100vh - 24px));display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:0 8px 30px rgba(0,0,0,.22)}
#chat-panel[hidden]{display:none}
.chat-head{display:flex;justify-content:space-between;align-items:center;padding:10px 14px;border-bottom:1px solid var(--line)}
.chat-head button{background:none;border:0;font-size:1.4rem;cursor:pointer;min-width:44px;min-height:44px}
.chat-warn{font-size:.82rem;background:var(--warm);padding:6px 14px;margin:0}
.chat-log{flex:1;overflow-y:auto;padding:12px 14px;font-size:.95rem}
.bubble{margin:0 0 10px;padding:10px 12px;border-radius:12px;white-space:pre-line}
.bubble.me{background:#e7f2ee;margin-left:30px}
.bubble.bot{background:#f6f3ee;margin-right:20px}
.bubble.em{background:#fde8e8;border:2px solid var(--alert);font-weight:600}
.bubble .src{display:block;font-size:.8rem;margin-top:6px}
.chat-form{display:flex;gap:6px;padding:10px;border-top:1px solid var(--line)}
.chat-form input{flex:1}