:root {
  --bg: #f6f7f4; --card: #ffffff; --ink: #1d2320; --muted: #66706a; --line: #e2e6e1;
  --accent: #1f6f5f; --accent-2: #c8742b; --warn: #b3261e; --ok: #2e7d32;
  --v0: #1f6f5f; --v1: #c8742b; --v2: #4b5ea6; --v3: #8e4d9e; --v4: #b3261e; --v5: #5c7a29;
  --radius: 12px; --shadow: 0 1px 2px rgba(0,0,0,.05), 0 6px 20px rgba(0,0,0,.05);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #121513; --card: #1b1f1d; --ink: #e8ebe8; --muted: #9aa49e; --line: #2b312e;
    --accent: #6fc3ae; --accent-2: #e5a06a; --warn: #ef7b73; --ok: #7bd389;
    --v0: #6fc3ae; --v1: #e5a06a; --v2: #9eaee8; --v3: #c79ad2; --v4: #ef7b73; --v5: #a6c86a;
  }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans KR", sans-serif; }
.top { display: flex; flex-wrap: wrap; gap: 16px; justify-content: space-between; align-items: center; padding: 20px 16px 8px; max-width: 1200px; margin: 0 auto; }
.brand { display: flex; gap: 14px; align-items: center; }
.logo { font-size: 34px; color: var(--accent); }
h1 { margin: 0; font-size: 26px; letter-spacing: .3px; }
.tagline { margin: 2px 0 0; color: var(--muted); }
.chips { display: flex; gap: 8px; flex-wrap: wrap; }
.chip { padding: 4px 10px; border-radius: 999px; background: var(--card); border: 1px solid var(--line); font-size: 13px; }
.chip.ok { border-color: var(--ok); color: var(--ok); }
.chip.bad { border-color: var(--warn); color: var(--warn); }
.chip.muted { color: var(--muted); }
.notice { max-width: 1200px; margin: 8px auto 12px; padding: 8px 16px; color: var(--muted); font-size: 13px; }
.grid { max-width: 1200px; margin: 0 auto; padding: 0 16px 24px; display: grid; grid-template-columns: repeat(auto-fit, minmax(340px, 1fr)); gap: 16px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 16px; min-width: 0; }
.card.wide { grid-column: 1 / -1; }
h2 { font-size: 16px; margin: 0 0 12px; color: var(--accent); }
h3 { font-size: 13px; margin: 14px 0 6px; color: var(--muted); text-transform: uppercase; letter-spacing: .4px; }
.kv { display: grid; grid-template-columns: max-content 1fr; gap: 4px 12px; margin: 0; }
.kv dt { color: var(--muted); }
.kv dd { margin: 0; font-variant-numeric: tabular-nums; word-break: break-all; }
.events { margin: 0; padding-left: 18px; font-size: 13px; }
.events li { margin: 2px 0; }
.muted { color: var(--muted); }
.gauge-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(120px, 1fr)); gap: 8px; margin-bottom: 10px; }
.stat { background: var(--bg); border-radius: 8px; padding: 8px 10px; }
.stat .label { display: block; font-size: 12px; color: var(--muted); }
.stat .value { font-size: 20px; font-variant-numeric: tabular-nums; }
.stat.alert .value { color: var(--warn); }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { text-align: left; padding: 5px 6px; border-bottom: 1px solid var(--line); font-variant-numeric: tabular-nums; }
th { color: var(--muted); font-weight: 600; }
td.num, th.num { text-align: right; }
.state-ok { color: var(--ok); }
.state-alarm { color: var(--warn); font-weight: 600; }
figure { margin: 12px 0 0; }
figcaption { font-size: 12px; color: var(--muted); margin-top: 4px; }
svg { width: 100%; height: auto; display: block; }
.axis { stroke: var(--line); stroke-width: 1; }
.tick { fill: var(--muted); font-size: 10px; }
.series { fill: none; stroke-width: 2; }
.controls { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin: 8px 0; }
.controls label { font-size: 13px; color: var(--muted); display: flex; gap: 6px; align-items: center; }
.controls input { width: 64px; padding: 4px 6px; border: 1px solid var(--line); border-radius: 6px; background: var(--bg); color: var(--ink); }
button { background: var(--accent); color: #fff; border: 0; border-radius: 8px; padding: 7px 12px; font-size: 14px; cursor: pointer; }
button:disabled { opacity: .45; cursor: default; }
button.secondary { background: var(--card); color: var(--accent); border: 1px solid var(--accent); }
.progress { height: 8px; background: var(--bg); border-radius: 999px; overflow: hidden; border: 1px solid var(--line); }
#progress-bar { height: 100%; width: 0; background: var(--accent); transition: width .2s; }
.pareto-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 12px; margin: 8px 0 12px; }
.pareto-grid figure { margin: 0; }
.legend { display: flex; flex-wrap: wrap; gap: 10px; font-size: 12px; color: var(--muted); margin: 4px 0; }
.legend span::before { content: "●"; margin-right: 4px; }
.foot { max-width: 1200px; margin: 0 auto; padding: 8px 16px 32px; color: var(--muted); font-size: 13px; }
.foot a { color: var(--accent); }
@media (max-width: 640px) { .grid { grid-template-columns: 1fr; } h1 { font-size: 22px; } .stat .value { font-size: 17px; } }

/* ---- five-step workbench ---- */
.steps { max-width: 1200px; margin: 6px auto 0; padding: 0 16px; display: flex; flex-wrap: wrap; gap: 6px; }
.step { background: var(--card); color: var(--muted); border: 1px solid var(--line); border-radius: 999px; padding: 6px 14px 6px 8px; font-size: 14px; display: flex; align-items: center; gap: 8px; }
.step .n { display: inline-flex; width: 22px; height: 22px; border-radius: 50%; align-items: center; justify-content: center; background: var(--bg); color: var(--muted); font-size: 12px; font-weight: 700; }
.step.active { color: var(--accent); border-color: var(--accent); }
.step.active .n { background: var(--accent); color: #fff; }
.panel { display: none; }
.panel.active { display: block; }
main .grid { padding-top: 4px; }
.badge { display: inline-block; padding: 1px 8px; border-radius: 999px; font-size: 12px; font-weight: 600; border: 1px solid currentColor; }
.badge.ok { color: var(--ok); }
.badge.bad { color: var(--warn); }
.swatch { display: inline-block; width: 10px; height: 10px; border-radius: 2px; margin-right: 6px; vertical-align: middle; }
.problems { margin: 6px 0 10px; padding-left: 18px; color: var(--warn); font-size: 13px; }
.preview td, .preview th { white-space: nowrap; }
button.small { padding: 3px 8px; font-size: 12px; border-radius: 6px; }
.small-link { font-size: 12px; color: var(--accent); margin-left: 4px; }
.button-link { display: inline-block; background: var(--card); color: var(--accent); border: 1px solid var(--accent); border-radius: 8px; padding: 6px 12px; font-size: 14px; text-decoration: none; }
.controls select { padding: 4px 6px; border: 1px solid var(--line); border-radius: 6px; background: var(--bg); color: var(--ink); }
.controls input[type="file"] { max-width: 260px; font-size: 13px; }
.controls input[type="text"] { width: 64px; }
.code { background: var(--bg); border: 1px solid var(--line); border-radius: 8px; padding: 10px 12px; font: 12px/1.5 ui-monospace, "SFMono-Regular", Menlo, monospace; overflow-x: auto; white-space: pre; margin: 0; }
#upload-result table { margin: 6px 0; }
#policy-recommend p { margin: 0 0 8px; }
@media (max-width: 640px) { .step { padding: 5px 10px 5px 6px; font-size: 13px; } .controls input[type="file"] { max-width: 100%; } }
td button, td .small-link, td .badge { white-space: nowrap; }
#versions-table td, #candidates-table td { white-space: nowrap; }
@media (max-width: 640px) { .card table { display: block; overflow-x: auto; } }