:root{--blue:#1f4e8c;--blue2:#173b6b;--bg:#f3f6fb;--card:#fff;--tx:#1b2430;--mu:#667085;--bd:#dfe5ee;--ok:#1a7f4b;--warn:#b54708;--bad:#b42318;--r:14px}
@media (prefers-color-scheme:dark){:root{--bg:#0f1622;--card:#182233;--tx:#e8edf5;--mu:#9aa7bb;--bd:#2a374d}}
*{box-sizing:border-box}html,body{margin:0}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;background:var(--bg);color:var(--tx);line-height:1.5;font-size:16px;-webkit-text-size-adjust:100%}
a{color:var(--blue)}@media (prefers-color-scheme:dark){a{color:#8db4ee}}
.wrap{max-width:720px;margin:0 auto;padding:16px}
.hero{background:linear-gradient(160deg,var(--blue),var(--blue2));color:#fff;padding:28px 16px 32px}
.hero .wrap{padding:0 16px}.hero h1{margin:0 0 8px;font-size:26px;line-height:1.2}.hero p{margin:0;opacity:.92}
.brand{font-weight:700;letter-spacing:.3px;margin-bottom:14px;opacity:.95}
.card{background:var(--card);border:1px solid var(--bd);border-radius:var(--r);padding:16px;margin:12px 0}
.card h2,.card h3{margin:0 0 8px}.card h2{font-size:19px}.card h3{font-size:16px}
label{display:block;font-size:14px;font-weight:600;margin:12px 0 4px}
input[type=text],input[type=email],input[type=tel],input[type=password],input[type=number],input[type=datetime-local],input[type=date],select,textarea{width:100%;padding:12px;border:1px solid var(--bd);border-radius:10px;background:var(--card);color:var(--tx);font:inherit}
textarea{min-height:84px;resize:vertical}
.chk{display:flex;gap:10px;align-items:flex-start;margin:12px 0;font-size:14px;font-weight:400}.chk input{margin-top:3px;flex:none;width:18px;height:18px}
button,.btn{display:inline-block;background:var(--blue);color:#fff;border:0;border-radius:10px;padding:12px 18px;font:inherit;font-weight:600;cursor:pointer;text-decoration:none;text-align:center}
button:disabled{opacity:.5;cursor:not-allowed}
.btn.sec,button.sec{background:transparent;color:var(--blue);border:1px solid var(--blue)}@media (prefers-color-scheme:dark){.btn.sec,button.sec{color:#8db4ee;border-color:#8db4ee}}
.btn.bad,button.bad{background:var(--bad)}.btn.ok,button.ok{background:var(--ok)}
.btn.sm,button.sm{padding:7px 12px;font-size:14px}.btn.block,button.block{display:block;width:100%}
.row{display:flex;gap:8px;flex-wrap:wrap;align-items:center}.row>*{flex:0 0 auto}.grow{flex:1 1 auto!important}
.mu{color:var(--mu);font-size:14px}.err{color:var(--bad);font-size:14px;margin-top:8px}.okmsg{color:var(--ok);font-size:14px;margin-top:8px}
.pill{display:inline-block;padding:2px 10px;border-radius:99px;font-size:12px;font-weight:700;background:#e8eefa;color:var(--blue)}
.pill.g{background:#e3f4ea;color:var(--ok)}.pill.o{background:#fdf0e1;color:var(--warn)}.pill.r{background:#fde8e6;color:var(--bad)}.pill.x{background:#eceff3;color:#555}
@media (prefers-color-scheme:dark){.pill{background:#22344f;color:#9cc0f5}.pill.g{background:#173a29;color:#6fd3a0}.pill.o{background:#3f2d14;color:#f2b46b}.pill.r{background:#431d1a;color:#f59a93}.pill.x{background:#2a3242;color:#b5bfcf}}
.nav{position:sticky;top:0;z-index:5;background:var(--blue);color:#fff}
.nav .wrap{display:flex;gap:4px;overflow-x:auto;padding:8px 12px;align-items:center}
.nav button{background:transparent;color:#fff;opacity:.8;padding:8px 12px;white-space:nowrap}.nav button.on{opacity:1;background:rgba(255,255,255,.18)}
.nav .brand{margin:0 8px 0 0;flex:none}
.list .item{display:block;width:100%;text-align:left;background:var(--card);color:var(--tx);border:1px solid var(--bd);border-radius:12px;padding:12px;margin:8px 0;font-weight:400}
.item .t{display:flex;justify-content:space-between;gap:8px;font-weight:700}.item .s{font-size:14px;color:var(--mu);margin-top:2px}
.big{font-size:30px;font-weight:800;letter-spacing:-.5px}
.kv{display:grid;grid-template-columns:130px 1fr;gap:4px 10px;font-size:15px}.kv dt{color:var(--mu)}.kv dd{margin:0;word-break:break-word}
.tr{white-space:pre-wrap;background:var(--bg);border:1px solid var(--bd);border-radius:10px;padding:10px;font-size:13px;max-height:340px;overflow:auto}
.tl{border-left:3px solid var(--bd);margin:8px 0 8px 6px;padding-left:12px}.tl div{margin:6px 0;font-size:14px}
.qr{width:220px;max-width:100%;background:#fff;padding:8px;border-radius:10px;border:1px solid var(--bd)}
.code{font-size:34px;font-weight:800;letter-spacing:4px;color:var(--blue)}@media (prefers-color-scheme:dark){.code{color:#8db4ee}}
table{width:100%;border-collapse:collapse;font-size:14px}th,td{text-align:left;padding:6px 4px;border-bottom:1px solid var(--bd);vertical-align:top}
.hide{display:none!important}
.banner{background:#fff7e6;border:1px solid #f3d9a4;color:#7a4b00;border-radius:12px;padding:12px;margin:12px 0;font-size:14px}
@media (prefers-color-scheme:dark){.banner{background:#3a2f17;border-color:#5b4820;color:#f2d9a0}}
/* chat */
.chat{display:flex;flex-direction:column;height:calc(100vh - 20px);height:calc(100dvh - 20px);max-width:720px;margin:0 auto;background:var(--card);border:1px solid var(--bd)}
.chat .hd{background:var(--blue);color:#fff;padding:12px 14px;display:flex;gap:12px;align-items:center}
.chat .hd img{width:42px;height:42px;border-radius:50%;object-fit:cover;background:#fff;transform:scaleX(-1)}
.chat .msgs{flex:1;overflow-y:auto;padding:14px;display:flex;flex-direction:column;gap:10px;background:var(--bg)}
.msg{max-width:86%;padding:10px 14px;border-radius:14px;white-space:pre-wrap;word-wrap:break-word;font-size:15px}
.msg.bot{background:var(--card);border:1px solid var(--bd);align-self:flex-start;border-bottom-left-radius:4px}
.msg.me{background:var(--blue);color:#fff;align-self:flex-end;border-bottom-right-radius:4px}
.typing{align-self:flex-start;color:var(--mu);font-style:italic;font-size:14px;padding:4px 10px}
.chat .in{display:flex;gap:8px;padding:10px;border-top:1px solid var(--bd);background:var(--card)}
.chat .in input{flex:1;border-radius:22px}.chat .in button{border-radius:50%;width:44px;height:44px;padding:0;font-size:18px}
.note{font-size:12px;color:var(--mu);text-align:center;padding:6px}

.logo{display:inline-block;background:#fff;border-radius:12px;padding:8px 14px;margin-bottom:14px}.logo img{display:block;height:44px;width:auto}
.nav .logo{padding:3px 8px;margin:0 8px 0 0;border-radius:8px;flex:none}.nav .logo img{height:26px}