:root {
  --bg: #ffffff;
  --fg: #16213a;
  --muted: #55617a;
  --faint: #7c8797;
  --line: #e6e8ee;
  --accent: #4f46e5;
  --accent-dark: #4338ca;
  --ok: #0f9d6b;
  --warn: #b45309;
  --panel: #fafbfe;
  --mono: ui-monospace, "SF Mono", Consolas, monospace;
}
* { box-sizing: border-box; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  max-width: 64rem; margin: 0 auto; padding: 2rem 1.5rem 3rem;
  color: var(--fg); line-height: 1.65; background: var(--bg);
}
.site-head { display: flex; align-items: center; justify-content: space-between; padding-bottom: 1.1rem; border-bottom: 1px solid var(--line); margin-bottom: 2.5rem; }
.brand { font-weight: 800; font-size: 1.15rem; letter-spacing: -.02em; color: var(--fg); text-decoration: none; }
.brand span { color: var(--accent); }
.top-nav { display: flex; gap: 1.15rem; }
.top-nav a { color: var(--muted); font-size: .9rem; font-weight: 500; text-decoration: none; }
.top-nav a:hover { color: var(--fg); }
a { color: var(--accent-dark); text-decoration: none; }
a:hover { text-decoration: underline; }

h1 { font-size: 2.1rem; font-weight: 800; letter-spacing: -.03em; line-height: 1.15; margin: 1rem 0 .6rem; }
h2 { font-size: 1.4rem; font-weight: 700; letter-spacing: -.02em; margin: 2.4rem 0 .8rem; }
h3 { font-size: 1.05rem; font-weight: 700; margin: 0 0 .35rem; }
.lead { font-size: 1.12rem; color: var(--muted); max-width: 40rem; }
.hint { font-size: .9rem; color: var(--faint); }
.center { text-align: center; }
.mt-sm { margin-top: .6rem; }
.mt-md { margin-top: 1rem; }

.hero { padding: 1rem 0 1.5rem; }

.scan-form, .row-form { display: flex; gap: .55rem; max-width: 34rem; margin: 1.4rem 0 0; }
.scan-form.center { margin-left: auto; margin-right: auto; }
input[type=text], input[type=url], input:not([type]), textarea {
  width: 100%; font: inherit; padding: .7rem .85rem; border: 1px solid var(--line); border-radius: 9px; color: var(--fg); background: #fff;
}
input:focus, textarea:focus { outline: 2px solid var(--accent); outline-offset: 1px; border-color: var(--accent); }
.scan-form input { flex: 1; font-family: var(--mono); }
button, .btn {
  font: inherit; font-weight: 600; cursor: pointer; border: 0; border-radius: 9px;
  padding: .7rem 1.15rem; background: var(--accent); color: #fff; text-decoration: none; display: inline-block;
}
button:hover, .btn:hover { background: var(--accent-dark); text-decoration: none; }
button:disabled { opacity: .6; cursor: default; }
button.primary { background: var(--accent); }
.btn-ghost { background: #fff; color: var(--accent-dark); border: 1px solid var(--line); }
.btn-ghost:hover { background: var(--panel); }

.panel { border: 1px solid var(--line); border-radius: 12px; padding: 1.3rem 1.4rem; background: #fff; }
.result { margin-top: 1.2rem; }
.result.err { border-color: #f0c9c0; background: #fdf6f4; color: var(--warn); }
.status { font-weight: 700; margin: 0 0 .8rem; }
.status.ok { color: var(--ok); }
.status.no { color: var(--warn); }
.res-line { margin: .5rem 0; font-size: .93rem; }
.res-tag { display: inline-block; min-width: 4.2rem; text-align: center; padding: .06rem .5rem; border-radius: 999px; font-size: .72rem; font-weight: 700; letter-spacing: .03em; text-transform: uppercase; margin-right: .3rem; }
.res-tag.found { background: #e6f6ef; color: var(--ok); }
.res-tag.miss { background: #fdf0e3; color: var(--warn); }
.res-line .hint { display: block; margin: .1rem 0 0 4.5rem; }

.grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.3rem; margin: 1.2rem 0; }
.card { border: 1px solid var(--line); border-radius: 12px; padding: 1.2rem 1.3rem; background: var(--panel); }
.card .step { font-size: .8rem; font-weight: 700; color: var(--accent); letter-spacing: .05em; text-transform: uppercase; }

.offer { border: 1px solid var(--line); border-radius: 14px; padding: 1.6rem 1.7rem; background: var(--panel); margin: 1.4rem 0; }
.price { font-size: 1.9rem; font-weight: 800; letter-spacing: -.02em; }
.price-note { color: var(--faint); font-size: .9rem; }
.offer ul { margin: .8rem 0 1.2rem; padding-left: 1.1rem; }
.offer li { margin: .3rem 0; }

.snippet { background: var(--panel); border: 1px solid var(--line); border-radius: 9px; padding: .8rem .9rem; overflow-x: auto; font-family: var(--mono); font-size: .82rem; margin: .5rem 0; }
.file-block { margin: 0 0 1.6rem; }
.label { font-size: .78rem; font-weight: 700; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); margin: 0 0 .3rem; }

label.field { display: block; font-weight: 600; font-size: .9rem; margin: .9rem 0 .3rem; }
.gen-fields { max-width: 40rem; }

details { border: 1px solid var(--line); border-radius: 9px; padding: .3rem 1rem; margin: .5rem 0; }
summary { font-weight: 600; cursor: pointer; padding: .5rem 0; }
details p { margin: 0 0 .8rem; color: var(--muted); }

footer { margin-top: 4rem; padding-top: 1.4rem; border-top: 1px solid var(--line); font-size: .85rem; color: var(--faint); }
footer nav { display: flex; flex-wrap: wrap; gap: .4rem 1.1rem; margin-bottom: .6rem; }
footer nav a { color: var(--faint); }
footer nav a:hover { color: var(--fg); }

@media (max-width: 700px) {
  body { padding: 1.5rem 1.1rem 2rem; }
  h1 { font-size: 1.7rem; }
  .grid3 { grid-template-columns: 1fr; }
  .scan-form { flex-direction: column; }
  .scan-form button { width: 100%; }
}