:root{
  --ink:#1c2430; --muted:#5b6675; --line:#dde3ea; --bg:#f7f8fa; --card:#fff;
  --brand:#0f5c6b; --brand-2:#127d8f; --accent:#e8f3f5; --warn:#8a4b12;
  --radius:14px; --max:1080px;
}
*{box-sizing:border-box}
html{font-size:16px}
body{margin:0;color:var(--ink);background:var(--bg);font-family:-apple-system,BlinkMacSystemFont,"Apple SD Gothic Neo","Malgun Gothic","Noto Sans KR",sans-serif;line-height:1.68;word-break:keep-all}
a{color:var(--brand);text-decoration:underline;text-underline-offset:3px}
img{max-width:100%}
header.site{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:10}
.bar{max-width:var(--max);margin:0 auto;padding:14px 20px;display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.logo{font-weight:800;font-size:1.12rem;color:var(--ink);text-decoration:none;letter-spacing:-.2px}
.logo span{color:var(--brand-2)}
nav.main{display:flex;gap:14px;flex-wrap:wrap;font-size:.93rem}
nav.main a{color:var(--muted);text-decoration:none;padding:4px 0;border-bottom:2px solid transparent}
nav.main a:hover,nav.main a[aria-current="page"]{color:var(--brand);border-bottom-color:var(--brand)}
main{max-width:var(--max);margin:0 auto;padding:32px 20px 64px}
.hero{padding:8px 0 24px;border-bottom:1px solid var(--line);margin-bottom:28px}
h1{font-size:clamp(1.7rem,4vw,2.5rem);line-height:1.25;letter-spacing:-.03em;margin:0 0 12px}
.lead{font-size:1.06rem;color:var(--muted);margin:0;max-width:760px}
h2{font-size:1.34rem;margin:36px 0 12px;letter-spacing:-.02em}
h3{font-size:1.05rem;margin:0 0 6px}
p,li{font-size:1rem}
ul,ol{padding-left:1.35rem}
li{margin:5px 0}
.note{background:#fff8e8;border-left:4px solid #d9a441;padding:12px 14px;color:#5d4a1e;font-size:.94rem;border-radius:0 8px 8px 0}
.calc{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px;margin:8px 0 24px;box-shadow:0 2px 10px rgba(20,40,60,.04)}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:14px;margin-bottom:16px}
label{display:flex;flex-direction:column;gap:6px;font-size:.9rem;font-weight:600;color:var(--muted)}
input,select{font:inherit;padding:10px 12px;border:1px solid #c7d0da;border-radius:9px;background:#fff;color:var(--ink);width:100%}
input:focus,select:focus{outline:3px solid #bfe3e9;border-color:var(--brand-2)}
label.check{flex-direction:row;align-items:center;gap:8px;font-weight:500;color:var(--ink);background:var(--accent);border-radius:9px;padding:10px 12px}
label.check input{width:18px;height:18px;accent-color:var(--brand)}
button{font:inherit;font-weight:700;background:var(--brand);color:#fff;border:0;border-radius:10px;padding:13px 22px;cursor:pointer}
button:hover{background:var(--brand-2)}
.error{color:#b3261e;font-weight:600;margin:10px 0 0}
.result{margin-top:20px}
.summary{background:var(--accent);border:1px solid #bfdde2;border-radius:10px;padding:14px 16px;margin-bottom:16px}
.summary strong{font-size:1.15rem;color:var(--brand)}
.grid-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:12px}
.card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px}
.card.best{border:2px solid var(--brand-2);box-shadow:0 4px 14px rgba(18,125,143,.12)}
.card.unavailable{opacity:.72;background:#fafbfc}
.card-head{display:flex;align-items:center;justify-content:space-between;gap:8px}
.badge{font-size:.75rem;font-weight:700;background:var(--brand);color:#fff;border-radius:999px;padding:3px 9px;white-space:nowrap}
.price{font-size:1.5rem;font-weight:800;margin:6px 0 2px;letter-spacing:-.02em}
.sub{font-size:.86rem;color:var(--muted);margin:0 0 8px}
.tags{list-style:none;padding:0;margin:0;font-size:.83rem;color:var(--muted)}
.tags li{position:relative;padding-left:12px;margin:3px 0}
.tags li::before{content:"·";position:absolute;left:2px;color:var(--brand-2)}
.reason{color:var(--warn);font-size:.9rem;margin:4px 0 0}
.empty{padding:14px;background:#fff;border:1px dashed var(--line);border-radius:10px}
.table-wrap{overflow-x:auto;margin:12px 0 18px;border:1px solid var(--line);border-radius:10px;background:#fff}
table{border-collapse:collapse;width:100%;font-size:.92rem;min-width:520px}
th,td{padding:10px 12px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
th{background:#f1f5f7;font-weight:700;color:#33414f;white-space:nowrap}
tbody tr:last-child td{border-bottom:0}
tbody tr:hover{background:#fbfcfd}
details{background:#fff;border:1px solid var(--line);border-radius:10px;padding:12px 16px;margin:10px 0}
summary{cursor:pointer;font-weight:700}
details p{margin:8px 0 2px}
footer.site{border-top:1px solid var(--line);background:#fff;margin-top:24px}
.foot{max-width:var(--max);margin:0 auto;padding:24px 20px;color:var(--muted);font-size:.86rem}
.foot nav{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:8px}
.foot a{color:var(--muted)}
.disclaimer{font-size:.82rem;color:#6b7684;margin-top:8px}
@media(max-width:640px){
  main{padding:24px 16px 48px}
  .bar{padding:12px 16px;gap:10px}
  nav.main{font-size:.86rem;gap:10px}
  h2{font-size:1.2rem}
  .calc{padding:16px}
}