:root {
  --bg: #f7f7f4;
  --surface: #ffffff;
  --surface-2: #f0f0ec;
  --text: #1c1f1d;
  --muted: #5f6661;
  --line: #deded8;
  --accent: #1a7f5a;
  --accent-ink: #ffffff;
  --err: #b42318;
  --err-bg: #fdecea;
  --warn: #8a5a00;
  --warn-bg: #fdf3dc;
  --ok: #1a7f5a;
  --ok-bg: #e5f4ec;
  --info: #5f6661;
  --info-bg: #efefeb;
  --radius: 12px;
  --shadow: 0 1px 2px rgb(0 0 0 / 5%), 0 4px 16px rgb(0 0 0 / 4%);
  --mono: ui-monospace, "SF Mono", "Cascadia Code", Menlo, Consolas, monospace;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121413;
    --surface: #1a1d1b;
    --surface-2: #222623;
    --text: #e8ebe8;
    --muted: #9aa39d;
    --line: #2f3431;
    --accent: #3fbf8a;
    --accent-ink: #0d1f17;
    --err: #ff8a80;
    --err-bg: #3a1d1b;
    --warn: #f2c265;
    --warn-bg: #362b14;
    --ok: #6fd3a5;
    --ok-bg: #16302a;
    --info: #9aa39d;
    --info-bg: #262a28;
    --shadow: none;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.55 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial,
        "Noto Sans", "PingFang SC", "Microsoft YaHei", sans-serif;
}
a { color: var(--accent); text-underline-offset: 2px; }
code, pre { font-family: var(--mono); font-size: 0.88em; }

.top {
  max-width: 920px; margin: 0 auto; padding: 18px 16px;
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
}
.brand {
  display: inline-flex; align-items: center; gap: 8px;
  font-weight: 700; font-size: 1.15rem; color: var(--text); text-decoration: none;
  letter-spacing: -0.01em;
}
.mark {
  display: inline-grid; place-items: center; width: 26px; height: 26px; border-radius: 7px;
  background: var(--accent); color: var(--accent-ink); font-size: 15px; font-weight: 800;
}
nav { display: flex; gap: 18px; font-size: 0.95rem; }
nav a { color: var(--muted); text-decoration: none; }
nav a:hover { color: var(--text); }
nav .gh { color: var(--text); font-weight: 600; }

main { max-width: 920px; margin: 0 auto; padding: 0 16px 48px; }
.hero { padding: 28px 0 22px; }
h1 {
  font-size: clamp(2rem, 5vw, 2.9rem); line-height: 1.1; margin: 0 0 14px;
  letter-spacing: -0.025em;
}
.lede { font-size: 1.1rem; color: var(--muted); max-width: 44em; margin: 0; }

.card {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 18px;
}
.drop {
  border: 1.5px dashed var(--line); border-radius: 10px; padding: 22px 16px;
  display: grid; gap: 4px; justify-items: center; text-align: center; color: var(--muted);
  transition: border-color .15s, background .15s; cursor: pointer;
}
.drop strong { color: var(--text); font-size: 1.05rem; }
.drop.over, .drop:focus-visible { border-color: var(--accent); background: var(--ok-bg); outline: none; }
.linkish { color: var(--accent); text-decoration: underline; cursor: pointer; }
.files { font-family: var(--mono); font-size: 0.85rem; color: var(--text); }
textarea {
  width: 100%; min-height: 128px; margin-top: 12px; resize: vertical;
  font: 0.9rem/1.5 var(--mono); color: var(--text); background: var(--surface-2);
  border: 1px solid var(--line); border-radius: 10px; padding: 12px;
}
textarea:focus, input:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
.actions { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin-top: 12px; }
button {
  font: inherit; font-weight: 600; border-radius: 9px; padding: 9px 16px; cursor: pointer;
  border: 1px solid var(--line); background: var(--surface); color: var(--text);
}
button:hover:not(:disabled) { border-color: var(--muted); }
button:disabled { opacity: .55; cursor: default; }
button.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
button.primary:hover:not(:disabled) { filter: brightness(1.07); border-color: var(--accent); }
button.ghost { background: transparent; }
button.small { padding: 6px 12px; font-size: 0.88rem; }
.status { color: var(--muted); font-size: 0.92rem; }
.options { margin-top: 12px; font-size: 0.92rem; }
.options summary { cursor: pointer; color: var(--muted); }
.options label { display: grid; gap: 4px; margin-top: 10px; }
.options small { color: var(--muted); }
.options input {
  font: inherit; padding: 8px 10px; border-radius: 8px; border: 1px solid var(--line);
  background: var(--surface-2); color: var(--text); max-width: 420px;
}
.privacy { margin: 12px 0 0; font-size: 0.85rem; color: var(--muted); }

.results { margin-top: 28px; }
.res-head { display: flex; justify-content: space-between; align-items: flex-end; gap: 12px; flex-wrap: wrap; }
.res-head h2 { margin: 0; font-size: 1.35rem; letter-spacing: -0.01em; }
.sub { margin: 2px 0 0; color: var(--muted); font-size: 0.9rem; overflow-wrap: anywhere; }
.exports { display: flex; gap: 8px; }
.bar { height: 4px; background: var(--surface-2); border-radius: 4px; margin: 14px 0 12px; overflow: hidden; }
.bar span { display: block; height: 100%; width: 0; background: var(--accent); transition: width .2s; }
.bar.done { visibility: hidden; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 14px; }
.chip {
  font-size: 0.88rem; font-weight: 600; padding: 5px 11px; border-radius: 999px;
  border: 1px solid var(--line); background: var(--surface); color: var(--text);
}
.chip[aria-pressed="true"] { outline: 2px solid var(--text); outline-offset: 1px; }
.chip .n { font-variant-numeric: tabular-nums; margin-left: 4px; }

.list { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.item {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 13px 15px; border-left: 4px solid var(--line);
}
.item.error { border-left-color: var(--err); }
.item.warning { border-left-color: var(--warn); }
.item.ok { border-left-color: var(--ok); }
.item.pending { opacity: .6; }
.item .row { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.key { font-weight: 600; overflow-wrap: anywhere; }
.where { color: var(--muted); font-size: 0.82rem; font-family: var(--mono); margin-left: auto; }
.raw { margin: 6px 0 0; color: var(--muted); font-size: 0.92rem; overflow-wrap: anywhere; }
.notes { margin: 8px 0 0; padding-left: 18px; font-size: 0.93rem; }
.notes:empty { display: none; }
.notes li { margin: 2px 0; overflow-wrap: anywhere; }
.links { display: flex; gap: 14px; margin-top: 6px; font-size: 0.88rem; }
.links:empty { display: none; }

.pill {
  display: inline-block; font-size: 0.78rem; font-weight: 700; letter-spacing: .01em;
  padding: 2px 9px; border-radius: 999px; white-space: nowrap;
  background: var(--info-bg); color: var(--info);
}
.pill.error { background: var(--err-bg); color: var(--err); }
.pill.warning { background: var(--warn-bg); color: var(--warn); }
.pill.ok { background: var(--ok-bg); color: var(--ok); }

.how { margin-top: 48px; }
.how h2 { font-size: 1.3rem; margin: 28px 0 12px; letter-spacing: -0.01em; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 12px; }
.grid > div {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 13px 15px;
}
.grid p { margin: 8px 0 0; font-size: 0.93rem; color: var(--muted); }
.steps { padding-left: 20px; }
.steps li { margin: 8px 0; }
pre {
  background: var(--surface-2); border: 1px solid var(--line); border-radius: 10px;
  padding: 12px 14px; overflow-x: auto; line-height: 1.5;
}
.foot {
  max-width: 920px; margin: 0 auto; padding: 22px 16px 40px; border-top: 1px solid var(--line);
  display: flex; flex-wrap: wrap; gap: 6px 18px; font-size: 0.85rem; color: var(--muted);
}

@media (max-width: 560px) {
  nav a:not(.gh) { display: none; }
  .where { margin-left: 0; width: 100%; }
  .card { padding: 14px; }
}