:root {
  --bg: #f6f5f2;
  --panel: #ffffff;
  --ink: #23211d;
  --muted: #78736a;
  --line: #e3ded5;
  --accent: #9a6a2f;
  --accent-ink: #ffffff;
  --good: #2c7a4b;
  --mono: "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14130f;
    --panel: #1d1b16;
    --ink: #e8e4dc;
    --muted: #9a938a;
    --line: #34302a;
    --accent: #c89a5b;
    --accent-ink: #14130f;
    --good: #6dbb8f;
  }
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font: 15px/1.6 -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--ink);
}
a { color: var(--accent); }

.top {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  align-items: baseline;
  justify-content: space-between;
  padding: 20px 24px 12px;
  border-bottom: 1px solid var(--line);
}
.brand h1 { display: inline; margin: 0; font-size: 26px; letter-spacing: 1px; }
.tagline { margin-left: 10px; color: var(--muted); }
.flow-pick { display: flex; gap: 10px; align-items: center; }
.flow-pick select {
  font-size: 15px;
  padding: 6px 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  color: var(--ink);
}
.flow-pick button {
  padding: 6px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  color: var(--muted);
  cursor: pointer;
}
.flow-pick button:hover { color: var(--ink); border-color: var(--accent); }

.layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 24px;
  padding: 20px 24px;
  max-width: 1180px;
  margin: 0 auto;
}
@media (max-width: 860px) {
  .layout { grid-template-columns: 1fr; }
  .results { order: -1; }
}

.hint { color: var(--muted); margin-top: 0; }

.block { margin-bottom: 22px; }
.block h2 {
  font-size: 14px;
  color: var(--muted);
  font-weight: 600;
  margin: 0 0 8px;
  padding-bottom: 4px;
  border-bottom: 1px solid var(--line);
}
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
  gap: 8px 16px;
}
.field { display: flex; align-items: center; gap: 8px; min-height: 34px; }
.field label { flex: 1; color: var(--ink); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.field input[type="number"], .field input[type="text"], .field select {
  width: 110px;
  padding: 5px 8px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--panel);
  color: var(--ink);
  font-family: var(--mono);
  font-size: 14px;
}
.field input[type="checkbox"] { width: 18px; height: 18px; accent-color: var(--accent); }
.field input:focus, .field select:focus { outline: 2px solid var(--accent); outline-offset: 0; }

.results { display: flex; flex-direction: column; gap: 12px; }
.result-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px 16px;
  display: flex;
  flex-direction: column;
}
.result-card .label { color: var(--muted); font-size: 13px; }
.result-card .value { font-family: var(--mono); font-size: 20px; }
.main-result { border-color: var(--accent); }
.main-result .value { font-size: 34px; color: var(--good); }
.result-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }

.meta {
  color: var(--muted);
  font-size: 13px;
  padding: 8px 4px 0;
}
.meta b { font-weight: 600; color: var(--ink); }

.foot {
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
  padding: 14px 24px 28px;
  max-width: 1180px;
  margin: 0 auto;
}