:root{
  --bg:#f6f7f9;
  --card:#ffffff;
  --text:#202124;
  --muted:#5f6368;
  --line:#e4e7eb;
  --accent:#f35b38;
  --accent-soft:#fff1ec;
  --blue:#3156e8;
  --max:940px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:Arial, Helvetica, sans-serif;
  font-size:18px;
  line-height:1.65;
  color:var(--text);
  background:var(--bg);
}
a{color:var(--blue)}
img{max-width:100%;height:auto}
.site-header{
  background:var(--card);
  border-bottom:1px solid var(--line);
}
.header-inner{
  max-width:var(--max);
  margin:auto;
  padding:34px 22px 26px;
  display:grid;
  grid-template-columns:1fr 280px;
  gap:28px;
  align-items:center;
}
.eyebrow{
  margin:0 0 6px;
  color:var(--accent);
  font-weight:800;
  letter-spacing:.04em;
  text-transform:uppercase;
  font-size:.83rem;
}
h1{
  margin:0 0 10px;
  font-size:clamp(2rem,5vw,3.2rem);
  line-height:1.08;
}
.subtitle{
  margin:0;
  color:var(--muted);
  font-size:1.04rem;
}
.hero-image{
  display:block;
  width:100%;
  max-width:280px;
  margin:auto;
}
.quick-nav{
  max-width:var(--max);
  margin:18px auto 0;
  padding:0 22px;
}
.quick-nav-inner{
  display:flex;
  flex-wrap:wrap;
  gap:9px;
}
.quick-nav a{
  text-decoration:none;
  color:var(--text);
  background:var(--card);
  border:1px solid var(--line);
  border-radius:999px;
  padding:8px 13px;
  font-size:.9rem;
  font-weight:700;
}
main{
  max-width:var(--max);
  margin:22px auto 60px;
  padding:0 22px;
}
.step{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:18px;
  padding:28px;
  margin:20px 0;
  box-shadow:0 8px 24px rgba(0,0,0,.035);
}
.step-title{
  display:flex;
  align-items:flex-start;
  gap:14px;
  margin-bottom:16px;
}
.step-badge{
  flex:0 0 auto;
  width:42px;
  height:42px;
  border-radius:50%;
  background:var(--accent);
  color:white;
  display:grid;
  place-items:center;
  font-weight:800;
}
h2{
  margin:2px 0 0;
  font-size:1.42rem;
  line-height:1.25;
}
h3{
  margin:18px 0 8px;
  font-size:1.08rem;
}
ul,ol{padding-left:1.4em}
li{margin:.55em 0}
.notice{
  border-left:5px solid var(--accent);
  background:var(--accent-soft);
  padding:14px 16px;
  border-radius:9px;
  margin:16px 0;
}
.gallery{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:14px;
  margin-top:22px;
  align-items:start;
}
.gallery.three{
  grid-template-columns:repeat(3,minmax(0,1fr));
}
.figure{
  background:#fafafa;
  border:1px solid var(--line);
  border-radius:14px;
  padding:12px;
  text-align:center;
}
.figure img{
  display:block;
  margin:auto;
  max-height:560px;
  object-fit:contain;
}
.figure.qr img{
  width:min(280px,100%);
}
figcaption{
  color:var(--muted);
  font-size:.82rem;
  margin-top:8px;
  line-height:1.4;
}
.specs{
  margin:0;
  padding:0;
  list-style:none;
}
.specs li{
  border-bottom:1px solid var(--line);
  padding:9px 0;
}
.specs li:last-child{border-bottom:0}
.footer{
  margin-top:26px;
  padding-top:22px;
  border-top:1px solid var(--line);
  color:var(--muted);
  font-size:.92rem;
}
.back-top{
  display:inline-block;
  margin-top:16px;
  font-weight:700;
}
@media (max-width:720px){
  body{font-size:17px}
  .header-inner{
    grid-template-columns:1fr;
    padding-top:26px;
    text-align:left;
  }
  .hero-image{max-width:250px}
  .step{padding:21px 18px}
  .gallery,.gallery.three{grid-template-columns:1fr}
  .figure img{max-height:620px}
}
@media print{
  body{background:white;font-size:12pt}
  .quick-nav{display:none}
  .step{box-shadow:none;break-inside:avoid}
}