/* Hand-written, framework-free. Distinct class vocabulary + palette on purpose —
   shares no build fingerprint, class names, or theme with any other property. */
:root {
  --fg: #10231f;
  --dim: #5c6b66;
  --edge: #d9e2df;
  --paper: #ffffff;
  --panel: #f3f7f5;
  --teal: #0f766e;
  --teal-soft: #e2f1ee;
  --green: #157347;
  --amber: #9a6a00;
  --red: #b42318;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  color: var(--fg);
  background: var(--paper);
  font-family: "Inter", "Helvetica Neue", "PingFang SC", "Microsoft YaHei",
    "Noto Sans CJK SC", system-ui, sans-serif;
  line-height: 1.65;
  font-size: 16px;
}
.shell { max-width: 760px; margin: 0 auto; padding: 0 18px; }
a { color: var(--teal); }

header.top { border-bottom: 1px solid var(--edge); }
header.top .shell { display: flex; align-items: center; justify-content: space-between; padding: 14px 18px; }
header.top .brand { font-weight: 700; letter-spacing: 0.02em; }
.linkish { font-size: 14px; color: var(--dim); text-decoration: none; }
.linkish:hover { color: var(--teal); }

.intro { padding: 36px 0 10px; }
.intro h1 { font-size: 27px; margin: 0 0 10px; }
.blurb { color: var(--dim); font-size: 17px; margin: 0 0 18px; }

.action {
  display: inline-block; background: var(--teal); color: #fff;
  padding: 10px 18px; border: 0; border-radius: 8px; font-size: 15px;
  font-weight: 600; cursor: pointer; text-decoration: none;
}
.action:hover { opacity: 0.92; }
.action:disabled { opacity: 0.5; cursor: default; }

.tools { display: grid; gap: 16px; padding: 14px 0 6px; }
@media (min-width: 680px) { .tools { grid-template-columns: 1fr 1fr; } }
.tool {
  border: 1px solid var(--edge); border-radius: 12px; padding: 16px 18px;
  background: var(--panel);
}
.tool h2 { font-size: 17px; margin: 0 0 4px; }
.hint { font-size: 13.5px; color: var(--dim); margin: 0 0 12px; }
.result { min-height: 40px; }
.result .big { font-size: 18px; margin: 0 0 6px; }
.result p { margin: 6px 0; }
.muted { color: var(--dim); }
code { font-family: "SFMono-Regular", "JetBrains Mono", Menlo, Consolas, monospace; font-size: 0.92em; }

.badge {
  display: inline-block; padding: 1px 9px; border-radius: 999px;
  font-size: 13px; font-weight: 600; vertical-align: middle;
}
.badge.ok { background: #e4f3ea; color: var(--green); }
.badge.bad { background: #fbe7e5; color: var(--red); }
.badge.warn { background: #fbf0da; color: var(--amber); }
.badge.neutral { background: var(--teal-soft); color: var(--teal); }

table.kv { width: 100%; border-collapse: collapse; font-size: 14px; margin-top: 8px; }
table.kv th, table.kv td { border-top: 1px solid var(--edge); padding: 7px 8px; text-align: left; vertical-align: top; }
table.kv thead th { border-top: 0; color: var(--dim); font-weight: 600; }

.faq { padding: 26px 0 6px; }
.faq h2 { font-size: 19px; margin: 0 0 10px; }
.faq details { border: 1px solid var(--edge); border-radius: 10px; padding: 2px 15px; margin: 9px 0; }
.faq summary { cursor: pointer; font-weight: 600; padding: 9px 0; }
.faq details p { margin: 2px 0 12px; color: var(--dim); }

.cta {
  margin: 26px 0; padding: 20px; border: 1px dashed var(--teal);
  border-radius: 12px; background: var(--teal-soft); text-align: center;
}
.cta p { margin: 6px 0; }

footer.foot { border-top: 1px solid var(--edge); margin-top: 26px; padding: 20px 0 40px; }
footer.foot p { font-size: 13.5px; color: var(--dim); margin: 0; }