:root{
  --blue:#2563eb; --blue-dark:#1d4ed8; --ink:#0f172a; --muted:#64748b;
  --line:#e2e8f0; --bg:#f6f8fb; --card:#ffffff;
  --green:#10b981; --amber:#f59e0b; --red:#dc2626; --dark:#0b1512; --dark2:#10241d;
}
*{box-sizing:border-box}
body{margin:0;font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
     color:var(--ink);background:var(--bg);font-size:15px;line-height:1.55}
h1,h2{margin:0 0 12px;letter-spacing:-.01em}
h1{font-size:26px}h2{font-size:17px}
a{color:var(--blue);text-decoration:none}
a:hover{text-decoration:underline}
.muted{color:var(--muted)}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13px}
.ok{color:var(--green);font-weight:600}

/* split auth screens (reference: grok.llkan.com) */
body.split{display:flex;min-height:100vh}
.split-left{flex:1.05;background:
  radial-gradient(1100px 700px at 12% 8%, rgba(16,185,129,.16), transparent 55%),
  radial-gradient(900px 600px at 85% 100%, rgba(37,99,235,.18), transparent 60%),
  linear-gradient(160deg,var(--dark) 0%,var(--dark2) 60%,#0a0f1a 100%);
  color:#e8f1ee;padding:56px 60px;display:flex;flex-direction:column}
.brand{font-size:22px;font-weight:800;letter-spacing:.02em;margin-bottom:auto}
.brand.small{font-size:18px;margin:0 0 28px}
.hero{font-size:40px;line-height:1.22;font-weight:800;max-width:560px;margin:48px 0 28px}
.feature-list{list-style:none;padding:0;margin:0 0 auto;display:grid;gap:14px;max-width:520px}
.feature-list li{position:relative;padding-left:30px;color:#cfe0da}
.feature-list li::before{content:"";position:absolute;left:0;top:6px;width:16px;height:16px;border-radius:50%;
  background:linear-gradient(135deg,#34d399,#2563eb)}
.feature-list.numbered{counter-reset:n}
.feature-list.numbered li::before{counter-increment:n;content:counter(n);color:#fff;font-size:11px;
  display:grid;place-items:center;font-weight:700}
.footnote{margin-top:40px;color:#8aa39b;font-size:13px}
.split-right{flex:.95;display:grid;place-items:center;background:#fff;padding:48px}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:24px;
      box-shadow:0 1px 2px rgba(15,23,42,.05)}
.auth-card{width:min(400px,100%);display:grid;gap:14px}
.chip{justify-self:start;background:#eff6ff;color:var(--blue);font-size:12px;font-weight:700;
      padding:4px 10px;border-radius:999px}
label{display:grid;gap:6px;font-size:13px;font-weight:600;color:#334155}
input[type=password],input[type=url],input[type=number],input[type=text]{
  width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:10px;font:inherit;background:#fff}
input:focus{outline:2px solid #bfdbfe;border-color:var(--blue)}
button,.link{font:inherit;font-weight:600;border-radius:10px;padding:10px 16px;border:1px solid transparent;
      cursor:pointer;display:inline-block;text-align:center}
button.primary,.link.primary{background:var(--blue);color:#fff}
button.primary:hover{background:var(--blue-dark);text-decoration:none}
button.secondary,.link.secondary{background:#fff;border-color:var(--line);color:var(--ink)}
button.ghost{background:transparent;color:#cbd5e1;border-color:transparent}
button.danger{background:#fff;border-color:#fecaca;color:var(--red)}
.error{background:#fef2f2;border:1px solid #fecaca;color:#b91c1c;border-radius:10px;padding:10px 12px;font-size:13px}
.notice{background:#eff6ff;border:1px solid #bfdbfe;border-radius:10px;padding:10px 14px;margin-bottom:16px;font-size:14px}
.notice.warn{background:#fffbeb;border-color:#fde68a}
.err-hint{color:#b45309;font-size:12px;margin-top:4px}

/* shell */
.shell{display:flex;min-height:100vh}
.sidebar{width:220px;background:linear-gradient(175deg,var(--dark),var(--dark2));color:#dbe7e3;
         padding:24px 16px;display:flex;flex-direction:column;gap:8px}
.sidebar nav{display:grid;gap:4px}
.sidebar nav a{color:#c7d6d1;padding:9px 12px;border-radius:10px;font-weight:600}
.sidebar nav a.active,.sidebar nav a:hover{background:rgba(255,255,255,.09);color:#fff;text-decoration:none}
.logout{margin-top:auto}
.content{flex:1;padding:32px 40px;max-width:1080px}
.page-head{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:20px}
.filters{display:flex;gap:8px}
.chip-link{padding:6px 12px;border-radius:999px;border:1px solid var(--line);background:#fff;color:var(--muted);font-size:13px}
.chip-link.active{background:var(--blue);border-color:var(--blue);color:#fff}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:14px;margin-bottom:20px}
.stat{display:grid;gap:2px}
.stat .num{font-size:30px;font-weight:800}
.stat .label{color:var(--muted);font-size:13px}
.stat.ok .num{color:var(--green)}
.stat.warn .num{color:var(--amber)}
section.card{margin-bottom:18px}
table{width:100%;border-collapse:collapse;font-size:14px}
th{text-align:left;color:var(--muted);font-weight:600;font-size:12px;text-transform:uppercase;
   letter-spacing:.04em;padding:8px 10px;border-bottom:1px solid var(--line)}
td{padding:10px;border-bottom:1px solid #eef2f7;vertical-align:top}
.badge{display:inline-block;padding:2px 9px;border-radius:999px;font-size:12px;font-weight:700}
.s-synced,.kind-synced{background:#ecfdf5;color:#047857}
.s-behind,.s-pending{background:#eff6ff;color:#1d4ed8}
.s-diverged,.s-blocked,.s-error,.s-needs_attention,.kind-blocked,.kind-error{background:#fef2f2;color:#b91c1c}
.s-paused{background:#f1f5f9;color:#475569}
.s-missing{background:#faf5ff;color:#7e22ce}
.kind-discover{background:#eff6ff;color:#1d4ed8}
.kind-auth{background:#fffbeb;color:#b45309}
.kind-check{background:#f1f5f9;color:#475569}
.tag{font-size:11px;color:var(--muted);border:1px solid var(--line);border-radius:6px;padding:1px 6px;margin-left:8px}
.kv{display:grid;grid-template-columns:130px 1fr;gap:8px 16px;margin:0 0 18px}
.kv dt{color:var(--muted);font-size:13px}
.kv dd{margin:0}
.actions{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.actions form{display:inline}
form.inline{display:flex;gap:10px}
form.inline input{flex:1}
label.check{display:flex;align-items:center;gap:8px;font-weight:500}
label.check input{width:auto}
@media (max-width:860px){
  body.split{flex-direction:column}
  .split-left{padding:36px 28px}
  .hero{font-size:30px;margin:28px 0 20px}
  .shell{flex-direction:column}
  .sidebar{width:auto;flex-direction:row;align-items:center;padding:12px 16px}
  .sidebar nav{display:flex}
  .logout{margin:0 0 0 auto}
  .content{padding:20px}
}