:root{
  --brand:#2563eb; --brand-d:#1d4ed8; --bg:#f4f6fb; --card:#fff;
  --line:#e5e7eb; --txt:#1f2937; --mut:#6b7280; --ok:#16a34a; --warn:#d97706; --err:#dc2626;
}
*{box-sizing:border-box}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"PingFang SC","Microsoft YaHei",sans-serif;
  background:var(--bg);color:var(--txt);font-size:14px;line-height:1.6}
.topbar{display:flex;align-items:center;justify-content:space-between;padding:12px 20px;background:#fff;
  border-bottom:1px solid var(--line);position:sticky;top:0;z-index:10}
.brand{font-weight:800;font-size:18px;color:var(--brand)}
.brand .sub{font-size:12px;color:var(--mut);font-weight:500;margin-left:6px}
.who{font-size:13px;color:var(--mut)}
.hidden{display:none!important}
.login-wrap{min-height:calc(100vh - 57px);display:flex;align-items:center;justify-content:center}
.login-card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:28px;width:340px;
  box-shadow:0 6px 24px rgba(0,0,0,.06)}
.login-card h1{margin:0 0 16px;font-size:20px}
.seg{display:flex;gap:8px;margin-bottom:14px}
.seg-btn{flex:1;padding:8px;border:1px solid var(--line);background:#fff;border-radius:9px;cursor:pointer;color:var(--mut)}
.seg-btn.active{background:var(--brand);color:#fff;border-color:var(--brand)}
#token{width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:9px;margin-bottom:12px;font-size:14px}
.primary{width:100%;padding:10px;border:0;border-radius:9px;background:var(--brand);color:#fff;font-weight:700;cursor:pointer}
.primary:hover{background:var(--brand-d)}
.err{color:var(--err);font-size:13px;min-height:18px;margin-top:8px}
.hint{font-size:12px;color:var(--mut);margin-top:10px}
.dash{max-width:960px;margin:18px auto;padding:0 16px}
.tabs{display:flex;gap:6px;flex-wrap:wrap;align-items:center;border-bottom:1px solid var(--line);margin-bottom:16px}
.tab{padding:9px 14px;border:0;background:transparent;cursor:pointer;color:var(--mut);font-size:14px;border-bottom:2px solid transparent;position:relative}
.tab.active{color:var(--brand);border-bottom-color:var(--brand);font-weight:700}
.logout{margin-left:auto;padding:7px 12px;border:1px solid var(--line);background:#fff;border-radius:8px;cursor:pointer;color:var(--mut)}
.pane{display:none}.pane.active{display:block}
.loading{color:var(--mut);padding:20px}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:16px 18px;margin-bottom:14px}
.kv{display:grid;grid-template-columns:120px 1fr;gap:6px 12px;margin:6px 0}
.kv .k{color:var(--mut)}
.kv .v{word-break:break-all}
code,.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
.tag{display:inline-block;padding:2px 8px;border-radius:999px;font-size:12px;background:#eef2ff;color:var(--brand)}
.tag.soon{background:#fef3c7;color:var(--warn)}
.tag.online{background:#dcfce7;color:var(--ok)}
.btn{display:inline-block;padding:8px 14px;border:0;border-radius:9px;background:var(--brand);color:#fff;cursor:pointer;font-size:13px}
.btn.ghost{background:#fff;border:1px solid var(--line);color:var(--txt)}
.btn.danger{background:#fff;border:1px solid var(--err);color:var(--err)}
.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin:8px 0}
input[type=text],input[type=password],textarea,select{width:100%;padding:9px 11px;border:1px solid var(--line);border-radius:9px;font-size:14px;font-family:inherit}
textarea{min-height:80px;resize:vertical}
label{font-size:13px;color:var(--mut);display:block;margin:10px 0 4px}
.spec-html{background:#fff;border:1px solid var(--line);border-radius:12px;padding:22px 26px;line-height:1.75}
.spec-html h1,.spec-html h2,.spec-html h3{color:var(--brand-d);margin-top:1.2em}
.spec-html code{background:#f1f5f9;padding:1px 6px;border-radius:5px}
.spec-html pre{background:#0f172a;color:#e2e8f0;padding:14px;border-radius:10px;overflow:auto}
.spec-html pre code{background:transparent;color:inherit;padding:0}
.spec-html table{border-collapse:collapse;width:100%;margin:10px 0}
.spec-html th,.spec-html td{border:1px solid var(--line);padding:7px 10px;text-align:left}
.spec-html th{background:#f8fafc}
.ticket{border:1px solid var(--line);border-radius:12px;padding:14px 16px;margin-bottom:12px;background:#fff;cursor:pointer}
.ticket:hover{border-color:var(--brand)}
.ticket .meta{font-size:12px;color:var(--mut);margin-top:4px}
.badge{font-size:12px;padding:2px 8px;border-radius:999px}
.badge.open{background:#fee2e2;color:var(--err)}
.badge.answered{background:#dbeafe;color:var(--brand)}
.badge.closed{background:#e5e7eb;color:var(--mut)}
.badge-dot{position:absolute;top:-4px;right:-8px;min-width:16px;height:16px;line-height:16px;padding:0 4px;background:#ef4444;color:#fff;font-size:11px;border-radius:999px;text-align:center;font-weight:700;box-shadow:0 0 0 2px #fff}
.thread .msg{border:1px solid var(--line);border-radius:10px;padding:10px 12px;margin:8px 0;background:#fff}
.thread .msg.admin{border-color:var(--brand);background:#f5f8ff}
.thread .msg .who{font-size:12px;color:var(--mut);margin-bottom:3px}
.pubkey{background:#0f172a;color:#a7f3d0;padding:10px;border-radius:8px;white-space:pre-wrap;word-break:break-all;font-size:12px;margin-top:6px}
.section-title{font-weight:700;margin:6px 0 10px}
.copy{font-size:12px;color:var(--brand);cursor:pointer;margin-left:8px}
/* 工单常见问题 / 处理时效说明 */
.faq{margin-bottom:14px;border:1px solid var(--line);border-radius:12px;background:var(--card);overflow:hidden}
.faq>summary{cursor:pointer;padding:12px 16px;font-weight:700;color:var(--txt);list-style:none;user-select:none}
.faq>summary::-webkit-details-marker{display:none}
.faq>summary:before{content:"▸ ";color:var(--brand);font-size:12px}
.faq[open]>summary:before{content:"▾ "}
.faq-body{padding:0 18px 16px;font-size:13px;color:var(--txt);line-height:1.7}
.faq-lead{margin:2px 0 10px;color:var(--mut)}
.faq-h{margin:14px 0 6px;font-size:13px;color:var(--brand)}
.faq-list{margin:0;padding-left:18px}
.faq-list li{margin:6px 0}
.faq-list code{background:var(--bg);padding:1px 6px;border-radius:4px;font-size:12px}
.faq-list b{color:var(--txt)}
.doc-html{background:#fff;border:1px solid var(--line);border-radius:12px;padding:22px 26px;line-height:1.75;margin-top:6px}
.doc-html h1,.doc-html h2,.doc-html h3{color:var(--brand-d);margin-top:1.2em}
.doc-html code{background:#f1f5f9;padding:1px 6px;border-radius:5px}
.doc-html pre{background:#0f172a;color:#e2e8f0;padding:14px;border-radius:10px;overflow:auto}
.doc-html pre code{background:transparent;color:inherit;padding:0}
.doc-html table{border-collapse:collapse;width:100%;margin:10px 0}
.doc-html th,.doc-html td{border:1px solid var(--line);padding:7px 10px;text-align:left}
.doc-html th{background:#f8fafc}
.doc-html blockquote{margin:10px 0;padding:6px 14px;border-left:3px solid var(--brand);color:var(--mut);background:#f8fafc}