:root {
  --bg: #f6f8f7; --surface: #ffffff; --text: #1d2422; --muted: #5f6b67;
  --line: #dde4e1; --accent: #187a6a; --accent-ink: #ffffff; --chip: #edf2f0;
  --good: #22744a; --warn: #9a5b00; --bad: #b3362b;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #131816; --surface: #1b2220; --text: #e6ece9; --muted: #9aa8a3;
    --line: #2c3633; --accent: #4cc0a8; --accent-ink: #0f1513; --chip: #232c29;
    --good: #6cc495; --warn: #e5b45a; --bad: #f07f73;
  }
}
:root[data-theme="dark"] {
  --bg: #131816; --surface: #1b2220; --text: #e6ece9; --muted: #9aa8a3;
  --line: #2c3633; --accent: #4cc0a8; --accent-ink: #0f1513; --chip: #232c29;
  --good: #6cc495; --warn: #e5b45a; --bad: #f07f73;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text);
  font-family: "Hiragino Sans", "Noto Sans JP", "Yu Gothic", system-ui, sans-serif; line-height: 1.8; }
main { max-width: 860px; margin: 0 auto; padding: 24px 16px 64px; }
a { color: var(--accent); }
h1 { font-size: 1.5rem; line-height: 1.45; margin: 0 0 8px; }
h2 { font-size: 1.15rem; margin: 32px 0 8px; }
h3 { font-size: 1rem; margin: 0 0 8px; }
p { margin: 0 0 8px; }
.lead { color: var(--muted); }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 16px; }
.note { color: var(--muted); font-size: .86rem; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
.table-wrap { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; font-variant-numeric: tabular-nums; }
th, td { padding: 6px 4px; border-bottom: 1px solid var(--line); text-align: left; font-size: .92rem; }
th.n, td.n { text-align: right; }
table.items input[data-k="shop"] { min-width: 9em; }
table.items input[data-k="price"] { width: 7.5em; text-align: right; }
input, select { font: inherit; color: var(--text); background: var(--bg); border: 1px solid var(--line); border-radius: 6px; padding: 6px 8px; width: 100%; }
input:focus, select:focus, button:focus-visible, a:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
button { font: inherit; cursor: pointer; border-radius: 6px; border: 1px solid var(--line); background: var(--chip); color: var(--text); padding: 6px 12px; }
button.ghost { background: transparent; color: var(--muted); }
.actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 10px; }
details { margin-top: 8px; }
summary { cursor: pointer; color: var(--muted); font-size: .9rem; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 10px; margin: 8px 0; }
label { display: block; font-size: .82rem; color: var(--muted); }
.kpis { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; margin-bottom: 12px; }
.kpi { background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px; display: grid; gap: 2px; }
.kpi span { font-size: .8rem; color: var(--muted); }
.kpi b { font-size: 1.45rem; font-variant-numeric: tabular-nums; line-height: 1.3; }
.kpi small { color: var(--muted); font-size: .78rem; }
.advice { display: grid; gap: 6px; margin-bottom: 12px; }
.advice p { background: var(--chip); border-radius: 8px; padding: 10px 12px; margin: 0; }
.advice .good { color: var(--good); }
.advice .warn { color: var(--warn); }
.shoplist { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
.shoplist li { display: grid; grid-template-columns: minmax(0, 1fr) auto auto; gap: 10px; align-items: center; font-size: .92rem; }
.shoplist li span:first-child { overflow-wrap: anywhere; }
.num { font-variant-numeric: tabular-nums; }
.badge { font-size: .78rem; padding: 1px 8px; border-radius: 999px; background: var(--chip); white-space: nowrap; }
.badge.ok { color: var(--good); } .badge.ng { color: var(--warn); }
.find { margin-top: 24px; }
.cta { display: inline-block; background: var(--accent); color: var(--accent-ink); text-decoration: none; border-radius: 6px; padding: 8px 14px; }
.pr { font-size: .75rem; color: var(--muted); border: 1px solid var(--line); border-radius: 4px; padding: 0 4px; }
.reads { padding-left: 1.2em; }
.formula { font-family: ui-monospace, Menlo, monospace; font-size: .9rem; background: var(--chip); border-radius: 6px; padding: 10px 12px; overflow-x: auto; margin: 8px 0; }
nav.crumb { font-size: .85rem; margin-bottom: 16px; }
p.meta { color: var(--muted); font-size: .85rem; }
footer { margin-top: 40px; color: var(--muted); font-size: .8rem; border-top: 1px solid var(--line); padding-top: 12px; }
@media (max-width: 620px) {
  .kpis { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .kpi b { font-size: 1.2rem; }
}
@media (max-width: 620px) {
  table.items thead { display: none; }
  table.items tr { display: grid; grid-template-columns: minmax(0, 1fr) 5.5em 2.75em; gap: 6px; padding: 8px 0; border-bottom: 1px solid var(--line); }
  table.items td { border: 0; padding: 0; }
  table.items td:first-child { grid-column: 1 / -1; }
  table.items input[data-k="shop"] { min-width: 0; }
  table.items input[data-k="price"] { width: 100%; }
  table.items button { min-height: 40px; width: 100%; padding: 0; }
}