:root {
  --bg: #f6f7f9; --panel: #ffffff; --line: #dfe3e8; --text: #1d2329; --muted: #66707a;
  --accent: #2463c7; --accent-text: #ffffff; --ok: #1f7a3e; --warn: #9a6400; --bad: #b42318;
  --warn-bg: #fff6e0; --bad-bg: #fdecea; --ok-bg: #e8f5ec; --chip: #eef1f4;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #15181c; --panel: #1d2126; --line: #313840; --text: #e6e9ec; --muted: #9aa4ae;
    --accent: #5b93ec; --accent-text: #0d1117; --ok: #5cc183; --warn: #e2b04a; --bad: #f07b6e;
    --warn-bg: #3a2f14; --bad-bg: #3d1d1a; --ok-bg: #16301f; --chip: #2a3037;
    color-scheme: dark;
  }
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { margin: 0; background: var(--bg); color: var(--text);
  font: 15px/1.55 "Pretendard", "Malgun Gothic", "Apple SD Gothic Neo", "Noto Sans KR", sans-serif; }
header { display: flex; align-items: center; gap: 16px; padding: 10px 20px; background: var(--panel);
  border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 5; flex-wrap: wrap; }
.brand { font-weight: 700; }
nav { display: flex; gap: 4px; flex: 1; flex-wrap: wrap; }
nav button { background: none; border: 0; padding: 6px 12px; border-radius: 6px; color: var(--muted); cursor: pointer; font: inherit; }
nav button.on { background: var(--chip); color: var(--text); font-weight: 600; }
.who { color: var(--muted); font-size: 14px; }
main { max-width: 1180px; margin: 0 auto; padding: 20px 16px 60px; }
h1 { font-size: 20px; margin: 4px 0 16px; }
h2 { font-size: 16px; margin: 0 0 10px; }
.panel { background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 18px; margin-bottom: 16px; }
.narrow { max-width: 420px; margin: 40px auto; }
label { display: block; font-size: 13px; color: var(--muted); margin: 10px 0 4px; }
input[type=text], input[type=password], input[type=email], input:not([type]), select {
  width: 100%; padding: 9px 10px; border: 1px solid var(--line); border-radius: 6px; background: var(--bg); color: var(--text); font: inherit; }
input.otp { letter-spacing: 6px; font-size: 20px; text-align: center; }
button { font: inherit; }
.btn { background: var(--accent); color: var(--accent-text); border: 0; border-radius: 6px; padding: 9px 16px; cursor: pointer; font-weight: 600; }
.btn.sub { background: var(--chip); color: var(--text); font-weight: 500; }
.btn:disabled { opacity: .5; cursor: default; }
.link { background: none; border: 0; color: var(--accent); cursor: pointer; padding: 0; }
.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.grow { flex: 1; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.err { color: var(--bad); margin-top: 10px; min-height: 1em; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 7px 8px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--muted); font-weight: 500; font-size: 13px; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
tr.click { cursor: pointer; }
tr.click:hover td { background: var(--chip); }
.chip { display: inline-block; padding: 1px 8px; border-radius: 10px; background: var(--chip); font-size: 12px; white-space: nowrap; }
.chip.ok { background: var(--ok-bg); color: var(--ok); }
.chip.warn { background: var(--warn-bg); color: var(--warn); }
.chip.bad { background: var(--bad-bg); color: var(--bad); }
.bar { height: 8px; background: var(--chip); border-radius: 4px; overflow: hidden; min-width: 120px; }
.bar > i { display: block; height: 100%; width: 0; background: var(--accent); transition: width .3s; }
.panel > .bar { margin-top: 10px; }
.drop { border: 2px dashed var(--line); border-radius: 10px; padding: 26px; text-align: center; color: var(--muted); margin: 12px 0 10px; }
.drop .row { margin-top: 10px; }
.drop.over { border-color: var(--accent); color: var(--text); }
.path { word-break: break-all; }
.indent { color: var(--muted); }
pre.diag { white-space: pre-wrap; background: var(--bg); border: 1px solid var(--line); border-radius: 6px; padding: 12px; font-size: 13px; }
.qr { background: #fff; padding: 8px; display: inline-block; border-radius: 6px; }
.qr svg { display: block; width: 220px; height: 220px; }
.secret { font-family: ui-monospace, Consolas, monospace; font-size: 15px; letter-spacing: 1px; }
.stat { display: flex; gap: 22px; flex-wrap: wrap; margin: 6px 0 4px; }
.stat b { font-size: 20px; display: block; font-variant-numeric: tabular-nums; }
#toast { position: fixed; bottom: 18px; left: 50%; transform: translateX(-50%); background: var(--text); color: var(--bg);
  padding: 9px 16px; border-radius: 8px; opacity: 0; transition: opacity .2s; pointer-events: none; max-width: 90vw; }
#toast.on { opacity: .95; }
@media (max-width: 640px) { main { padding: 14px 12px 50px; } .hide-sm { display: none; } }
label.check { display: flex; gap: 8px; align-items: center; color: var(--text); font-size: 14px; margin: 12px 0; }
.row select { width: auto; }
details.panel > summary { cursor: pointer; display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
details.panel .panel { margin: 10px 0 0; }
tr.flag td { background: var(--warn-bg); }
.scroll { overflow-x: auto; }
td input { min-width: 90px; }
input[type=date] { padding: 8px 10px; border: 1px solid var(--line); border-radius: 6px; background: var(--bg); color: var(--text); font: inherit; width: 100%; }
fieldset.grp { border: 1px solid var(--line); border-radius: 8px; margin: 0 0 10px; padding: 4px 12px 10px; }
fieldset.grp legend { font-size: 13px; color: var(--muted); padding: 0 4px; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); gap: 0 12px; }