:root {
  --bg: #f6f7f9; --panel: #fff; --text: #1f2933; --muted: #616e7c; --line: #e4e7eb;
  --brand: #1f4e8c; --brand-ink: #fff;
  --ok-bg: #e8f5ee; --ok: #1e6b43;
  --warn-bg: #fff4d6; --warn: #8a5a00;
  --cand-bg: #fff8e1; --cand: #7a5d00;
  --ng-bg: #fde8e8; --ng: #a61b1b;
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
body {
  margin: 0; background: var(--bg); color: var(--text); font-size: 14px; line-height: 1.6;
  font-family: "Hiragino Sans", "Noto Sans JP", "Yu Gothic UI", Meiryo, sans-serif;
}
header.top {
  background: var(--brand); color: var(--brand-ink); padding: 10px 24px;
  display: flex; align-items: center; justify-content: space-between;
}
header.top a { color: var(--brand-ink); text-decoration: none; font-weight: 600; }
header.top .user { font-size: 12px; opacity: .9; }
header.top .user a { font-weight: 400; margin-left: 12px; text-decoration: underline; }
main { max-width: 1280px; margin: 0 auto; padding: 24px 16px 64px; }
h1 { font-size: 20px; margin: 0 0 16px; }
h2 { font-size: 16px; margin: 24px 0 8px; }
.panel { background: var(--panel); border: 1px solid var(--line); border-radius: 8px; padding: 16px 20px; }
.actions { display: flex; gap: 8px; align-items: center; margin: 16px 0; flex-wrap: wrap; }
.btn {
  display: inline-block; border: 1px solid var(--brand); background: var(--brand); color: #fff;
  padding: 7px 16px; border-radius: 6px; font-size: 14px; cursor: pointer; text-decoration: none;
}
.btn.secondary { background: #fff; color: var(--brand); }
.btn:disabled { opacity: .5; cursor: not-allowed; }
table { width: 100%; border-collapse: collapse; background: var(--panel); }
th, td { border-bottom: 1px solid var(--line); padding: 6px 8px; text-align: left; vertical-align: top; }
th { background: #eef2f7; font-weight: 600; font-size: 12px; color: var(--muted); position: sticky; top: 0; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
td.small { font-size: 12px; color: var(--muted); }
.nowrap { white-space: nowrap; }
tr.dup td { background: #fffbe6; }
.badge { display: inline-block; padding: 1px 8px; border-radius: 10px; font-size: 12px; white-space: nowrap; }
.badge.confirmed { background: var(--ok-bg); color: var(--ok); }
.badge.candidate { background: var(--cand-bg); color: var(--cand); }
.badge.review { background: var(--warn-bg); color: var(--warn); }
.badge.unclassified { background: var(--ng-bg); color: var(--ng); font-weight: 600; }
.alert { padding: 10px 14px; border-radius: 6px; margin: 12px 0; }
.alert.warn { background: var(--warn-bg); color: var(--warn); }
.alert.error { background: var(--ng-bg); color: var(--ng); }
.alert.ok { background: var(--ok-bg); color: var(--ok); }
.alert ul { margin: 4px 0 0; padding-left: 20px; }
.summary { display: flex; gap: 24px; flex-wrap: wrap; }
.summary div { min-width: 120px; }
.summary .label { font-size: 12px; color: var(--muted); }
.summary .value { font-size: 18px; font-weight: 600; font-variant-numeric: tabular-nums; }
.dropzone {
  border: 2px dashed #9aa5b1; border-radius: 8px; padding: 32px; text-align: center;
  background: #fff; color: var(--muted);
}
.dropzone.over { border-color: var(--brand); background: #eef4fb; }
label.field { display: block; margin: 12px 0 4px; font-weight: 600; }
input[type=month], input[type=text] { padding: 6px 8px; border: 1px solid #cbd2d9; border-radius: 6px; font-size: 14px; }
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 8px; }
@media (max-width: 720px) { main { padding: 16px; } .summary { gap: 12px; } }
.muted { color: var(--muted); }
.small { font-size: 12px; }
.crumbs { font-size: 12px; color: var(--muted); margin-bottom: 8px; }
.crumbs a { color: var(--brand); }
.sticky-summary {
  position: sticky; top: 0; z-index: 5; background: var(--panel); border: 1px solid var(--line);
  border-radius: 8px; padding: 12px 16px; margin-bottom: 12px; box-shadow: 0 2px 6px rgba(0,0,0,.04);
}
.summary-actions { margin-left: auto; align-self: center; display: flex; gap: 8px; align-items: center; }
.summary-actions form { margin: 0; }
.hint { font-size: 12px; color: var(--muted); margin-top: 6px; }
.toolbar { display: flex; gap: 16px; align-items: center; flex-wrap: wrap; margin: 12px 0; font-size: 13px; }
.toolbar .bulk { display: flex; gap: 6px; align-items: center; flex-wrap: wrap; }
.btn.small { padding: 4px 10px; font-size: 13px; }
.btn.tiny { padding: 0 8px; font-size: 12px; margin-left: 4px; }
button.link { background: none; border: 0; padding: 0; color: var(--brand); font-size: 12px; cursor: pointer; text-decoration: underline; }
select.account { max-width: 170px; padding: 3px 4px; border: 1px solid #cbd2d9; border-radius: 4px; font-size: 13px; }
input.usage-memo { width: 140px; padding: 3px 6px; border: 1px solid #cbd2d9; border-radius: 4px; font-size: 13px; }
td.memo-col { max-width: 220px; }
th { top: 0; }
.toast {
  position: fixed; right: 16px; bottom: 16px; background: #1f2933; color: #fff; padding: 8px 14px;
  border-radius: 6px; font-size: 13px; z-index: 10;
}
@media (max-width: 720px) {
  .summary-actions { margin-left: 0; width: 100%; }
  .sticky-summary { position: static; }
}
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--line); margin-bottom: 16px; flex-wrap: wrap; }
.tabs a { padding: 8px 14px; color: var(--muted); text-decoration: none; border-bottom: 2px solid transparent; }
.tabs a.on { color: var(--brand); border-bottom-color: var(--brand); font-weight: 600; }
form.inline { display: inline; margin: 0; }
.inline-form { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.form-grid { display: grid; grid-template-columns: 120px 1fr; gap: 12px 16px; align-items: start; }
.form-grid > label { font-weight: 600; padding-top: 6px; }
.form-grid select, .form-grid input[type=number] { padding: 6px 8px; border: 1px solid #cbd2d9; border-radius: 6px; font-size: 14px; }
tr.inactive td { color: #9aa5b1; }
.panel.request { margin-bottom: 12px; display: grid; gap: 8px; }
input[type=email], input[type=number] { padding: 6px 8px; border: 1px solid #cbd2d9; border-radius: 6px; font-size: 14px; }
header.top nav a { margin-left: 16px; font-weight: 400; }
@media (max-width: 720px) { .form-grid { grid-template-columns: 1fr; } }
.login { max-width: 480px; margin: 48px auto; }
header.top a.brand { letter-spacing: .02em; }
header.top .tagline { font-size: 11px; font-weight: 400; opacity: .75; margin-left: 6px; }
@media (max-width: 720px) { header.top .tagline { display: none; } }