:root {
  --bg: #f4f3f0; --panel: #ffffff; --ink: #1d1d1b; --muted: #6b6b66; --line: #e5e3de; --soft: #f0efeb;
  --accent: #1d1d1b; --accent-ink: #ffffff; --ok: #1f7a4d; --warn: #a86400; --bad: #b3261e; --info: #2457a6;
  --radius: 12px; --shadow: 0 1px 2px rgba(0,0,0,.04), 0 4px 16px rgba(0,0,0,.04);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #161615; --panel: #1f1f1d; --ink: #f1f0ec; --muted: #a3a29c; --line: #34332f; --soft: #292826;
    --accent: #f1f0ec; --accent-ink: #161615; --ok: #5cc28d; --warn: #e0a54a; --bad: #f0857c; --info: #82aaf0;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #161615; --panel: #1f1f1d; --ink: #f1f0ec; --muted: #a3a29c; --line: #34332f; --soft: #292826;
  --accent: #f1f0ec; --accent-ink: #161615; --ok: #5cc28d; --warn: #e0a54a; --bad: #f0857c; --info: #82aaf0;
  color-scheme: dark;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 14px/1.5 -apple-system, "Segoe UI", Roboto, Arial, sans-serif; }
a { color: inherit; }
h1 { font-size: 22px; margin: 0 0 16px; letter-spacing: -.01em; }
h2 { font-size: 16px; margin: 0 0 12px; }
h3 { font-size: 14px; margin: 16px 0 8px; color: var(--muted); font-weight: 600; text-transform: uppercase; letter-spacing: .04em; }
code, pre, textarea.code { font-family: ui-monospace, "SF Mono", Menlo, monospace; font-size: 12.5px; }
pre { background: var(--soft); padding: 12px; border-radius: 8px; overflow: auto; white-space: pre-wrap; word-break: break-all; }

.layout { display: grid; grid-template-columns: 220px 1fr; min-height: 100vh; }
nav.side { background: var(--panel); border-right: 1px solid var(--line); padding: 20px 12px; position: sticky; top: 0; height: 100vh; overflow: auto; }
nav.side .logo { font-weight: 800; letter-spacing: .1em; padding: 0 10px 20px; }
nav.side .logo small { display: block; font-weight: 500; letter-spacing: 0; color: var(--muted); }
nav.side a { display: block; padding: 8px 10px; border-radius: 8px; text-decoration: none; color: var(--muted); margin-bottom: 2px; }
nav.side a.active, nav.side a:hover { background: var(--soft); color: var(--ink); }
nav.side .me { margin-top: 24px; padding: 10px; color: var(--muted); font-size: 12px; border-top: 1px solid var(--line); }
main.content { padding: 28px 32px 60px; max-width: 1280px; width: 100%; min-width: 0; }
@media (max-width: 860px) {
  .layout { grid-template-columns: 1fr; }
  nav.side { position: static; height: auto; display: flex; flex-wrap: wrap; gap: 4px; padding: 10px 16px; }
  nav.side .logo { width: 100%; padding: 4px 0 8px; }
  nav.side .me { display: none; }
  main.content { padding: 16px; }
}

.panel { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; box-shadow: var(--shadow); margin-bottom: 16px; min-width: 0; }
.grid { display: grid; gap: 16px; }
.g2 { grid-template-columns: repeat(2, minmax(0, 1fr)); } .g3 { grid-template-columns: repeat(3, minmax(0, 1fr)); } .g4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
@media (max-width: 860px) { .g2, .g3, .g4 { grid-template-columns: 1fr; } }
.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.spacer { flex: 1; }
.muted { color: var(--muted); }
.small { font-size: 12px; }

.stat { padding: 16px; }
.stat .v { font-size: 26px; font-weight: 700; letter-spacing: -.02em; font-variant-numeric: tabular-nums; }
.stat .l { color: var(--muted); font-size: 12px; }

table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-size: 12px; color: var(--muted); font-weight: 600; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
tr.click { cursor: pointer; } tr.click:hover td { background: var(--soft); }
.table-wrap { overflow-x: auto; }

input, select, textarea { font: inherit; color: var(--ink); background: var(--panel); border: 1px solid var(--line); border-radius: 8px; padding: 8px 10px; width: 100%; }
textarea { min-height: 120px; resize: vertical; }
textarea.code { min-height: 360px; line-height: 1.45; }
label { display: block; font-size: 12px; color: var(--muted); margin: 10px 0 4px; }
input[type=checkbox], input[type=radio] { width: auto; }
.inline { display: inline-flex; align-items: center; gap: 6px; color: var(--ink); font-size: 14px; margin: 0; }

button, .btn { font: inherit; border: 1px solid var(--line); background: var(--panel); color: var(--ink); padding: 8px 14px; border-radius: 8px; cursor: pointer; text-decoration: none; display: inline-flex; align-items: center; gap: 6px; white-space: nowrap; }
button.primary, .btn.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
button.danger { color: var(--bad); }
button:disabled { opacity: .5; cursor: default; }
button.sm { padding: 4px 10px; font-size: 12px; }

.badge { display: inline-block; padding: 2px 8px; border-radius: 99px; font-size: 12px; background: var(--soft); color: var(--muted); white-space: nowrap; }
.badge.ok { color: var(--ok); } .badge.warn { color: var(--warn); } .badge.bad { color: var(--bad); } .badge.info { color: var(--info); }
.msg { padding: 10px 12px; border-radius: 8px; background: var(--soft); margin: 8px 0; border-left: 3px solid var(--muted); }
.msg.bad { border-color: var(--bad); } .msg.warn { border-color: var(--warn); } .msg.ok { border-color: var(--ok); }

.steps { display: flex; gap: 6px; margin-bottom: 16px; flex-wrap: wrap; }
.steps span { padding: 6px 12px; border-radius: 99px; background: var(--soft); color: var(--muted); font-size: 13px; }
.steps span.on { background: var(--accent); color: var(--accent-ink); }

.funnel { display: flex; gap: 0; flex-wrap: wrap; align-items: stretch; }
.funnel div { flex: 1; min-width: 110px; padding: 12px; border-right: 1px solid var(--line); }
.funnel div:last-child { border: 0; }
.funnel b { display: block; font-size: 20px; font-variant-numeric: tabular-nums; }
.funnel span { color: var(--muted); font-size: 12px; }

.bars { display: flex; align-items: flex-end; gap: 2px; height: 120px; padding-top: 8px; }
.bars div { flex: 1; background: var(--accent); opacity: .85; border-radius: 3px 3px 0 0; min-height: 2px; }

iframe.preview { width: 100%; height: 640px; border: 1px solid var(--line); border-radius: 8px; background: #fff; }
iframe.preview.mobile { width: 390px; max-width: 100%; }
.chat { background: #8faec4; border-radius: 12px; padding: 16px; }
.bubble { background: #fff; color: #111; border-radius: 12px; padding: 10px 12px; max-width: 420px; white-space: pre-wrap; word-break: break-word; }
.kb { max-width: 420px; margin-top: 4px; }
.kb .r { display: flex; gap: 4px; margin-top: 4px; }
.kb .r span { flex: 1; text-align: center; background: rgba(255,255,255,.75); color: #111; border-radius: 8px; padding: 7px; font-size: 13px; }

.rule { display: grid; grid-template-columns: 1.4fr 1fr 1.4fr auto; gap: 8px; margin-bottom: 8px; }
@media (max-width: 860px) { .rule { grid-template-columns: 1fr; } }
.login { max-width: 360px; margin: 12vh auto; }
.toast { position: fixed; right: 16px; bottom: 16px; z-index: 50; max-width: calc(100% - 32px); }
.toast div { background: var(--ink); color: var(--bg); padding: 10px 14px; border-radius: 8px; margin-top: 8px; box-shadow: var(--shadow); }
.toast div.bad { background: var(--bad); color: #fff; }