:root{
  --bg:#f5f7f8;
  --card:#ffffff;
  --ink:#16242b;
  --muted:#627078;
  --line:#dbe3e7;
  --accent:#0c6b70;
  --accent-dark:#084e52;
  --soft:#e9f4f4;
  --warn:#fff7df;
}
*{box-sizing:border-box}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Hiragino Sans","Yu Gothic",Meiryo,sans-serif;
  background:var(--bg);
  color:var(--ink);
  line-height:1.65;
}
a{color:var(--accent-dark)}
.wrap{max-width:1120px;margin:0 auto;padding:0 20px}
.site-header{
  background:#fff;
  border-bottom:1px solid var(--line);
  position:sticky;
  top:0;
  z-index:5;
}
.header-inner{
  min-height:68px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
}
.brand{
  font-weight:800;
  text-decoration:none;
  color:var(--ink);
  letter-spacing:.01em;
}
.nav{display:flex;gap:16px;flex-wrap:wrap}
.nav a{text-decoration:none;font-size:.92rem}
.hero{padding:64px 0 32px}
.hero h1{
  margin:0 0 16px;
  max-width:780px;
  font-size:clamp(2rem,4.3vw,3.7rem);
  line-height:1.16;
  letter-spacing:-.03em;
}
.hero p{max-width:760px;color:var(--muted);font-size:1.04rem}
.badge{
  display:inline-flex;
  align-items:center;
  gap:7px;
  background:var(--soft);
  color:var(--accent-dark);
  border-radius:999px;
  padding:7px 12px;
  font-size:.82rem;
  font-weight:700;
  margin-bottom:18px;
}
.panel,.card,.article{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:18px;
  box-shadow:0 6px 22px rgba(20,40,50,.04);
}
.panel{padding:24px;margin:20px 0 34px}
.filter-grid{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:14px;
}
label{display:block;font-size:.86rem;font-weight:700;margin-bottom:6px}
input,select{
  width:100%;
  min-height:44px;
  padding:9px 11px;
  border:1px solid #c8d3d8;
  border-radius:10px;
  font:inherit;
  background:#fff;
}
.check{
  display:flex;
  align-items:center;
  gap:9px;
  min-height:44px;
  padding-top:25px;
}
.check input{width:auto;min-height:auto}
.actions{
  display:flex;
  gap:10px;
  flex-wrap:wrap;
  margin-top:18px;
}
button,.button{
  appearance:none;
  border:0;
  border-radius:10px;
  padding:11px 16px;
  font:inherit;
  font-weight:750;
  cursor:pointer;
  text-decoration:none;
  display:inline-flex;
  align-items:center;
  justify-content:center;
}
.primary{background:var(--accent);color:white}
.secondary{background:#edf2f4;color:var(--ink)}
.summary{
  margin:4px 0 18px;
  font-size:1rem;
  font-weight:750;
}
.results{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:16px;
  padding-bottom:24px;
}
.card{padding:22px}
.card h2{font-size:1.18rem;margin:0 0 4px}
.maker{font-size:.85rem;color:var(--muted);margin-bottom:14px}
.specs{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:8px 14px;
  margin:14px 0;
}
.spec{
  background:#f7f9fa;
  border-radius:10px;
  padding:10px;
}
.spec span{display:block;color:var(--muted);font-size:.75rem}
.spec strong{font-size:.95rem}
.tags{display:flex;gap:6px;flex-wrap:wrap;margin:12px 0}
.tag{
  background:var(--soft);
  color:var(--accent-dark);
  border-radius:999px;
  padding:4px 8px;
  font-size:.72rem;
}
.note{
  background:var(--warn);
  border:1px solid #eadca9;
  border-radius:12px;
  padding:13px 15px;
  font-size:.88rem;
}
.guide-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:16px;
  margin:28px 0 50px;
}
.guide-card{
  display:block;
  background:#fff;
  border:1px solid var(--line);
  border-radius:16px;
  padding:22px;
  text-decoration:none;
  color:var(--ink);
}
.guide-card:hover{border-color:#9ebbc0}
.guide-card strong{display:block;margin-bottom:5px}
.guide-card span{color:var(--muted);font-size:.9rem}
.article{padding:30px;margin:34px 0 50px}
.article h1{font-size:2rem;line-height:1.3}
.article h2{margin-top:34px}
.table-wrap{overflow:auto}
table{width:100%;border-collapse:collapse;font-size:.9rem}
th,td{border-bottom:1px solid var(--line);padding:10px;text-align:left;white-space:nowrap}
th{background:#f7f9fa}
footer{padding:34px 0 50px;color:var(--muted);font-size:.82rem}
.footer-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}
.footer-inner p{margin:0}
.footer-nav{display:flex;gap:14px;flex-wrap:wrap}
.footer-nav a{text-decoration:none}
@media(max-width:820px){
  .filter-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .results,.guide-grid{grid-template-columns:1fr}
}
@media(max-width:520px){
  .filter-grid{grid-template-columns:1fr}
  .header-inner{align-items:flex-start;padding-top:14px;padding-bottom:14px}
  .nav{gap:10px}
  .hero{padding-top:42px}
}