:root{
  --bg:#f5f6f2; --surface:#ffffff; --surface-2:#f9faf7; --ink:#171b19; --muted:#707973;
  --line:#e2e6df; --line-strong:#cfd6cc; --brand:#e9583f; --brand-deep:#c9402d;
  --brand-soft:#fff0ec; --mint:#d8f3e6; --green:#187c55; --green-soft:#e8f7f0;
  --amber:#a3640b; --amber-soft:#fff5dd; --blue:#315f95; --blue-soft:#eaf2fc;
  --danger:#b83232; --danger-soft:#fdeeee; --shadow:0 18px 50px rgba(32,43,37,.08);
  --radius:20px; --mono:"Cascadia Mono","SFMono-Regular",Consolas,monospace;
}
*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:14px/1.55 -apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",sans-serif;-webkit-font-smoothing:antialiased}
button,input,textarea,select{font:inherit;color:inherit}
button{cursor:pointer}
a{color:inherit;text-decoration:none}
svg{display:block}
.hidden{display:none!important}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:11px;padding:9px 14px;background:var(--brand);color:#fff;font-weight:650;line-height:1.2;transition:transform .16s ease,background .16s ease,box-shadow .16s ease}
.btn:hover{background:var(--brand-deep)}
.btn:active{transform:translateY(1px)}
.btn:disabled{opacity:.5;cursor:not-allowed}
.btn svg{width:17px;height:17px}
.btn.secondary{background:var(--surface);border-color:var(--line-strong);color:var(--ink)}
.btn.secondary:hover{background:var(--surface-2)}
.btn.ghost{background:transparent;color:var(--muted)}
.btn.ghost:hover{background:var(--surface-2);color:var(--ink)}
.btn.danger{background:var(--danger-soft);color:var(--danger)}
.btn.sm{padding:6px 10px;border-radius:9px;font-size:12px}
.icon-btn{display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--line);background:var(--surface);color:var(--muted);border-radius:10px;width:36px;height:36px;padding:0}
.icon-btn:hover{color:var(--ink);background:var(--surface-2)}
.icon-btn svg{width:18px;height:18px}
.field{display:flex;flex-direction:column;gap:6px}
.field label{font-size:12px;font-weight:650;color:var(--muted)}
.input,.textarea,.select{width:100%;border:1px solid var(--line-strong);border-radius:11px;background:#fff;padding:10px 12px;outline:none;transition:border-color .16s,box-shadow .16s}
.input:focus,.textarea:focus,.select:focus{border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-soft)}
.textarea{resize:none;min-height:84px}
.select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--muted) 50%),linear-gradient(135deg,var(--muted) 50%,transparent 50%);background-position:calc(100% - 16px) 50%,calc(100% - 11px) 50%;background-size:5px 5px;background-repeat:no-repeat;padding-right:34px}
.brand{display:flex;align-items:center;gap:10px;font-weight:780;letter-spacing:-.3px;font-size:17px}
.brand-mark{width:34px;height:34px;border-radius:11px;background:var(--brand);display:grid;place-items:center;color:#fff;box-shadow:0 6px 15px rgba(233,88,63,.25)}
.brand-mark svg{width:20px;height:20px}
.brand small{display:block;font-size:10px;color:var(--muted);font-weight:600;letter-spacing:.8px;margin-top:1px}
.badge{display:inline-flex;align-items:center;gap:5px;padding:3px 8px;border-radius:99px;font-size:11px;font-weight:700;white-space:nowrap;background:var(--surface-2);color:var(--muted);border:1px solid var(--line)}
.badge::before{content:"";width:6px;height:6px;border-radius:50%;background:currentColor}
.badge.green{background:var(--green-soft);color:var(--green);border-color:#cbe9dc}
.badge.amber{background:var(--amber-soft);color:var(--amber);border-color:#f1dfb1}
.badge.red{background:var(--danger-soft);color:var(--danger);border-color:#f3d1d1}
.badge.blue{background:var(--blue-soft);color:var(--blue);border-color:#d7e5f6}
.badge.plain::before{display:none}
.dot{width:7px;height:7px;border-radius:50%;background:#aeb6b1;display:inline-block}
.dot.online{background:#22a06b;box-shadow:0 0 0 3px rgba(34,160,107,.13)}
.avatar{width:40px;height:40px;border-radius:13px;display:grid;place-items:center;background:var(--mint);color:var(--green);font-weight:750;flex:none;position:relative;overflow:hidden}
.avatar.large{width:54px;height:54px;border-radius:17px;font-size:18px}
.avatar.small{width:32px;height:32px;border-radius:10px;font-size:12px}
.avatar.brand-av{background:var(--brand-soft);color:var(--brand)}
.avatar .presence{position:absolute;right:-1px;bottom:-1px;width:10px;height:10px;border:2px solid #fff;border-radius:50%;background:#b6bdb9}
.avatar .presence.online{background:#22a06b}
.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:56px 24px;color:var(--muted)}
.empty-icon{width:62px;height:62px;border-radius:20px;background:var(--surface-2);display:grid;place-items:center;margin-bottom:16px;color:var(--line-strong)}
.empty-icon svg{width:28px;height:28px}
.empty-state h3{margin:0 0 5px;color:var(--ink);font-size:16px}
.empty-state p{margin:0;max-width:320px;font-size:13px}
.spinner{width:16px;height:16px;border:2px solid rgba(255,255,255,.35);border-top-color:#fff;border-radius:50%;animation:spin .8s linear infinite}
.spinner.dark{border-color:var(--line);border-top-color:var(--brand)}
@keyframes spin{to{transform:rotate(360deg)}}
.toast-wrap{position:fixed;right:22px;bottom:22px;z-index:100;display:flex;flex-direction:column;gap:8px;pointer-events:none}
.toast{pointer-events:auto;min-width:230px;max-width:360px;display:flex;gap:10px;align-items:flex-start;background:#1c2420;color:#fff;padding:11px 14px;border-radius:12px;box-shadow:0 10px 30px rgba(0,0,0,.22);animation:toastIn .22s ease;font-size:13px}
.toast.error{background:#762c2c}.toast.success{background:#176344}
@keyframes toastIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.modal-backdrop{position:fixed;inset:0;z-index:80;background:rgba(20,27,23,.36);backdrop-filter:blur(5px);display:grid;place-items:center;padding:20px}
.modal{background:var(--surface);border-radius:var(--radius);box-shadow:0 30px 90px rgba(0,0,0,.2);width:min(440px,100%);padding:24px;animation:modalIn .2s ease}
@keyframes modalIn{from{opacity:0;transform:scale(.97)}to{opacity:1;transform:none}}
.modal h2{margin:0 0 4px;font-size:19px;letter-spacing:-.3px}
.modal p.hint{margin:0 0 18px;color:var(--muted);font-size:13px}
.modal .actions{display:flex;justify-content:flex-end;gap:8px;margin-top:20px}
.code-box{display:flex;align-items:center;gap:8px;border:1px dashed var(--line-strong);border-radius:11px;padding:10px 12px;background:var(--surface-2);font-family:var(--mono);font-size:14px;word-break:break-all}
.code-box strong{flex:1;font-weight:600}
.tag{display:inline-flex;padding:2px 7px;background:var(--surface-2);border:1px solid var(--line);border-radius:6px;font-size:11px;color:var(--muted);white-space:nowrap}
.site-footer{text-align:center;color:var(--muted);font-size:11px;padding:20px}
.pulse{animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.45}}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}