:root {
  --ink: #10151c;
  --ink-2: #4a5768;
  --ink-3: #6f7d8f;
  --line: #dfe4ea;
  --line-2: #eef1f5;
  --bg: #ffffff;
  --bg-2: #f6f8fa;
  --accent: #2563eb;
  --accent-dark: #1d4ed8;
  --ok: #15803d;
  --no: #b91c1c;
  --warn-bg: #fffaf0;
  --warn-line: #f0d19a;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.65 var(--sans);
}

.wrap { width: min(1080px, calc(100% - 48px)); margin: 0 auto; }

h1, h2, h3 { line-height: 1.25; margin: 0 0 12px; }
h1 { font-size: clamp(30px, 4.6vw, 46px); letter-spacing: -0.02em; }
h2 { font-size: clamp(23px, 2.9vw, 30px); letter-spacing: -0.01em; }
h3 { font-size: 17px; }
p { margin: 0 0 16px; }
a { color: var(--accent); }

/* Header */

.site-head { border-bottom: 1px solid var(--line); background: var(--bg); }

.head-inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; padding: 14px 0;
}

.brand { display: flex; align-items: center; gap: 11px; text-decoration: none; color: inherit; }

.mark {
  display: grid; place-items: center;
  width: 40px; height: 40px; border-radius: 9px;
  background: var(--accent); color: #fff;
  font-weight: 700; letter-spacing: 0.5px; font-size: 15px;
  flex: 0 0 auto;
}

.brand-text { display: flex; flex-direction: column; line-height: 1.25; }
.brand-text strong { font-size: 15px; }
.brand-text span { font-size: 13px; color: var(--ink-3); }

.head-link { font-size: 14px; text-decoration: none; }
@media (max-width: 560px) { .head-link { display: none; } }

/* Hero */

.hero { padding: 64px 0 52px; }
.hero h1 { max-width: 17ch; }

.lede { font-size: clamp(17px, 2vw, 19px); color: var(--ink-2); max-width: 62ch; }

.hero-actions { display: flex; flex-wrap: wrap; gap: 10px; margin: 26px 0 14px; }

.hero-note { font-size: 14px; color: var(--ink-3); margin: 0; }

/* Buttons */

.btn {
  display: inline-block;
  font: inherit; font-size: 15px; font-weight: 500;
  padding: 11px 20px; border-radius: 8px;
  border: 1px solid var(--line);
  background: var(--bg); color: var(--ink);
  text-decoration: none; cursor: pointer;
}
.btn:hover { border-color: #c6cdd6; }
.btn-primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-dark); border-color: var(--accent-dark); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* Sections */

.section { padding: 52px 0; }
.section-lede { color: var(--ink-2); max-width: 68ch; }

.band { background: var(--bg-2); border-top: 1px solid var(--line-2); border-bottom: 1px solid var(--line-2); }

.steps { display: grid; gap: 28px; grid-template-columns: repeat(3, 1fr); padding: 48px 0; }
@media (max-width: 780px) { .steps { grid-template-columns: 1fr; } }

.step-n {
  display: grid; place-items: center;
  width: 30px; height: 30px; border-radius: 50%;
  background: var(--accent); color: #fff;
  font-size: 14px; font-weight: 600; margin-bottom: 12px;
}
.step p { color: var(--ink-2); margin: 0; font-size: 15px; }

/* Results panel */

.results {
  border: 1px solid var(--line); border-radius: 10px;
  padding: 20px 22px; margin-top: 22px; background: var(--bg-2);
}
.results[hidden] { display: none; }

.results dl { margin: 0; display: grid; grid-template-columns: minmax(150px, auto) 1fr; gap: 9px 20px; }
@media (max-width: 560px) { .results dl { grid-template-columns: 1fr; gap: 2px 0; } }
.results dt { color: var(--ink-3); font-size: 14px; }
.results dd { margin: 0; font-family: var(--mono); font-size: 13.5px; overflow-wrap: anywhere; }
.results dd.pending { font-family: var(--sans); color: var(--ink-3); }

.fineprint { font-size: 13px; color: var(--ink-3); margin: 16px 0 0; }

/* Downloads */

.detected {
  display: inline-flex; align-items: baseline; gap: 7px;
  background: var(--bg-2); border: 1px solid var(--line);
  border-radius: 999px; padding: 6px 14px; font-size: 14px; margin-bottom: 18px;
}
.detected[hidden] { display: none; }
.detected-label { color: var(--ink-3); }

.downloads { display: grid; gap: 14px; grid-template-columns: repeat(3, 1fr); }
@media (max-width: 780px) { .downloads { grid-template-columns: 1fr; } }

.dl {
  display: flex; flex-direction: column; gap: 3px;
  border: 1px solid var(--line); border-radius: 10px;
  padding: 18px 20px; text-decoration: none; color: inherit;
  background: var(--bg);
}
.dl[aria-disabled="true"] { opacity: 0.6; cursor: not-allowed; }
.dl.is-you { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.10); }
.dl-os { font-weight: 600; font-size: 17px; }
.dl-meta { font-size: 13.5px; color: var(--ink-3); }
.dl-cta { font-size: 14px; color: var(--ink-3); margin-top: 8px; }

.notice {
  margin-top: 20px; padding: 16px 18px;
  background: var(--warn-bg); border: 1px solid var(--warn-line);
  border-radius: 10px; font-size: 15px; color: #6b4c15;
}
.notice strong { color: #5a3f0f; }
.notice a { color: #8a5a00; }

/* Form */

.codeform { display: grid; gap: 16px; grid-template-columns: 1fr 1fr; max-width: 680px; margin-top: 22px; }
@media (max-width: 620px) { .codeform { grid-template-columns: 1fr; } }
.field-wide { grid-column: 1 / -1; }

.field label { display: block; font-size: 14px; color: var(--ink-2); margin-bottom: 5px; }
.field .opt { color: var(--ink-3); font-weight: 400; }
.field input {
  font: inherit; width: 100%; padding: 10px 12px;
  border: 1px solid var(--line); border-radius: 8px; background: var(--bg); color: var(--ink);
}
.field input:focus { outline: 2px solid var(--accent); outline-offset: 1px; border-color: var(--accent); }
.field .err { color: var(--no); font-size: 13px; margin-top: 4px; }

.code-out {
  font-family: var(--mono); font-size: 30px; font-weight: 700;
  letter-spacing: 0.16em; color: var(--accent); margin: 4px 0 10px;
}

/* Two-column comparison */

.cols { display: grid; gap: 32px; grid-template-columns: 1fr 1fr; }
@media (max-width: 780px) { .cols { grid-template-columns: 1fr; } }
.cols ul { margin: 0; padding-left: 20px; color: var(--ink-2); font-size: 15px; }
.cols li { margin-bottom: 7px; }
h3.ok { color: var(--ok); }
h3.no { color: var(--no); }

/* Footer */

.site-foot { border-top: 1px solid var(--line); margin-top: 8px; padding: 32px 0 44px; font-size: 14px; color: var(--ink-2); }
.foot-inner { display: flex; flex-wrap: wrap; gap: 24px; justify-content: space-between; }
.foot-links { display: flex; flex-direction: column; gap: 5px; }