:root {
  --ink: #1c1814;
  --muted: #5c5348;
  --paper: #f6f1e8;
  --card: #fffdf8;
  --line: #e2d8c8;
  --black: #1c1814;
  --red: #c2410c;
  --green: #15803d;
  --blue: #1d4ed8;
  --yellow: #a16207;
  --danger: #9f1239;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Segoe UI", system-ui, sans-serif;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.45;
}
header {
  padding: 28px 20px 18px;
  max-width: 980px;
  margin: 0 auto;
}
header p { color: var(--muted); margin: 8px 0 0; }
h1 { font-size: 2rem; line-height: 1.1; margin: 0; letter-spacing: -0.03em; }
h2 { font-size: 1.35rem; margin: 0 0 12px; }
main { max-width: 980px; margin: 0 auto; padding: 0 20px 64px; }
section {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 20px;
  margin: 16px 0;
}
.danger {
  background: #fff1f2;
  border-color: #fecdd3;
}
.danger strong { color: var(--danger); }
.photos { display: grid; grid-template-columns: 1fr; gap: 12px; }
.photos figure { margin: 0; }
.photos img, .wide img {
  width: 100%;
  height: auto;
  border-radius: 12px;
  display: block;
  background: #ddd;
}
figcaption { font-size: 0.92rem; color: var(--muted); margin-top: 6px; }
table { width: 100%; border-collapse: collapse; font-size: 0.98rem; }
th, td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-size: 0.78rem; letter-spacing: 0.04em; text-transform: uppercase; color: var(--muted); }
.swatch {
  display: inline-block;
  width: 14px; height: 14px;
  border-radius: 50%;
  margin-right: 6px;
  vertical-align: -2px;
  border: 1px solid rgba(0,0,0,.25);
}
.k-black { background: #111; }
.k-red { background: #dc2626; }
.k-green { background: #16a34a; }
.k-blue { background: #2563eb; }
.k-yellow { background: #eab308; }
ol.steps { margin: 0; padding-left: 1.2rem; }
ol.steps li { margin: 10px 0; }
.diagram {
  width: 100%;
  height: auto;
  background: #fff;
  border-radius: 12px;
  border: 1px solid var(--line);
}
.blades {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  margin-top: 12px;
}
.blade {
  border-radius: 10px;
  padding: 12px 8px;
  text-align: center;
  color: white;
  font-weight: 700;
}
.blade small { display: block; font-weight: 500; opacity: .9; margin-top: 4px; }
.b-plus { background: #a16207; }
.b-j1 { background: #1d4ed8; }
.b-j2 { background: #15803d; }
.b-minus { background: #1c1814; }
footer {
  max-width: 980px;
  margin: 0 auto;
  padding: 0 20px 40px;
  color: var(--muted);
  font-size: 0.9rem;
}
a { color: #9a3412; }
@media (min-width: 800px) {
  .photos { grid-template-columns: 1.2fr .8fr; }
  .photos .span2 { grid-column: 1 / -1; }
}
@media print {
  body { background: white; }
  section { break-inside: avoid; }
  header, main, footer { max-width: none; }
}