:root{color-scheme:light;--ink:#111827;--muted:#667085;--line:#e5e7eb;--surface:#fff;--canvas:#f5f6f8;--accent:#111827;--good:#137a4b;--warn:#9a6700;--bad:#b42318}
*{box-sizing:border-box}
body{margin:0;background:var(--canvas);color:var(--ink);font:15px/1.55 -apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",sans-serif}
button,input,select{font:inherit}
.shell{max-width:1120px;margin:0 auto;padding:24px 22px 40px}
.topbar{display:flex;align-items:center;justify-content:space-between;margin-bottom:44px}
.brand{display:flex;align-items:center;gap:12px;color:inherit;text-decoration:none}
.brand-mark{display:grid;place-items:center;width:42px;height:42px;border-radius:13px;background:#111827;color:#fff;font-size:25px;font-weight:800}
.brand strong,.brand small{display:block}.brand small{color:var(--muted);font-size:12px}
h1,h2,p{margin-top:0}h1{font-size:clamp(28px,4vw,38px);letter-spacing:-.04em;margin-bottom:8px}h2{font-size:19px;margin:0 0 4px}
.eyebrow{font-size:11px;font-weight:800;letter-spacing:.14em;color:#7b8493;margin-bottom:8px}
.muted{color:var(--muted)}.hidden{display:none!important}
.login-wrap{min-height:55vh;display:grid;place-items:center}
.login-card,.panel,.stat-card{background:var(--surface);border:1px solid var(--line);border-radius:18px;box-shadow:0 8px 30px rgba(16,24,40,.035)}
.login-card{width:min(100%,430px);padding:32px}
.login-card h1{font-size:29px}
label{display:block;font-size:13px;font-weight:650;margin:16px 0 7px}
input,select{width:100%;border:1px solid #d0d5dd;border-radius:10px;padding:12px 13px;background:#fff;color:var(--ink);outline:none}
input:focus,select:focus{border-color:#64748b;box-shadow:0 0 0 3px rgba(100,116,139,.14)}
.button{display:inline-flex;align-items:center;justify-content:center;min-height:40px;padding:9px 15px;border:1px solid transparent;border-radius:10px;font-weight:700;text-decoration:none;cursor:pointer;white-space:nowrap}
.button-primary{background:#111827;color:#fff}.button-primary:hover{background:#263244}
.button-secondary{background:#fff;border-color:#d0d5dd;color:#111827}.button-quiet{background:transparent;border-color:var(--line);color:#344054}
.button.full{width:100%;margin-top:20px}.button.disabled{opacity:.45;pointer-events:none}
.error{min-height:22px;color:var(--bad);font-size:13px;margin:10px 0 0}
.page-heading{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:24px}
.stat-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin-bottom:18px}
.stat-card{padding:18px}.stat-card span{display:block;color:var(--muted);font-size:13px;margin-bottom:9px}.stat-card strong{font-size:20px;overflow-wrap:anywhere}
.content-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-bottom:18px}
.panel{padding:22px;margin-bottom:18px}.panel-heading{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:18px}.panel-heading p{font-size:13px;margin:0}
.result-list{display:grid;gap:9px}.result-row{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;padding:11px 0;border-bottom:1px solid #f0f1f3}.result-row:last-child{border-bottom:0}.result-row strong{font-size:13px}.result-row span{font-size:13px;text-align:right;color:var(--muted)}.status-ok{color:var(--good)!important}.status-warning,.status-pending{color:var(--warn)!important}.status-error{color:var(--bad)!important}
.pairing-form{display:grid;grid-template-columns:1fr}.pairing-result{margin-top:16px;padding:14px;border-radius:12px;background:#f8fafc;border:1px solid var(--line);overflow-wrap:anywhere}.pairing-result code{display:block;margin:8px 0;padding:10px;background:#eef2f6;border-radius:8px;font-size:12px;user-select:all}.hint{font-size:12px;color:var(--muted);margin:14px 0 0}
.device-list{display:grid;gap:8px}.device-row{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:12px 0;border-bottom:1px solid #f0f1f3}.device-row:last-child{border-bottom:0}.device-meta strong,.device-meta small{display:block}.device-meta small{color:var(--muted);font-size:12px}.device-actions{display:flex;align-items:center;gap:10px}.revoked{font-size:12px;color:var(--bad)}
.download-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.download-card{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:16px;border:1px solid var(--line);border-radius:13px}.download-card strong{display:block}.download-card p{font-size:12px;margin:3px 0 0}
.message{min-height:24px;color:var(--muted);font-size:13px}.message.error{color:var(--bad)}
footer{display:flex;justify-content:space-between;gap:12px;color:#98a2b3;font-size:12px;padding:18px 2px}
@media(max-width:760px){.shell{padding:18px 14px 30px}.topbar{margin-bottom:28px}.stat-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.content-grid{grid-template-columns:1fr}.panel{padding:17px}.page-heading{align-items:flex-start;flex-direction:column}.download-grid{grid-template-columns:1fr}.device-row{align-items:flex-start;flex-direction:column}.device-actions{width:100%;justify-content:flex-end}footer{flex-direction:column}}

.pairing-qr{display:block;width:176px;height:176px;max-width:100%;margin:12px auto;padding:10px;background:#fff;border:1px solid var(--line);border-radius:12px}