:root{--bg:#f6f8fb;--card:#fff;--ink:#1b2430;--sub:#5b6676;--line:#e3e8ef;--pri:#2563eb;--pri2:#1d4ed8;--acc:#f97316;--ok:#16a34a;--warn:#b45309}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.65 -apple-system,BlinkMacSystemFont,"Apple SD Gothic Neo","Malgun Gothic","Noto Sans KR",sans-serif}
a{color:var(--pri)}
.wrap{max-width:720px;margin:0 auto;padding:0 16px}
header.top{background:#fff;border-bottom:1px solid var(--line)}
header.top .wrap{display:flex;align-items:center;justify-content:space-between;height:52px}
header.top a.logo{font-weight:800;color:var(--ink);text-decoration:none;font-size:17px}
header.top nav a{margin-left:14px;color:var(--sub);text-decoration:none;font-size:14px}
h1{font-size:26px;line-height:1.3;margin:26px 0 8px}
.lead{color:var(--sub);margin:0 0 18px}
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:18px;margin:14px 0}
label{display:block;font-weight:600;font-size:14px;margin:12px 0 4px}
label small{font-weight:400;color:var(--sub)}
input[type=number],select{width:100%;padding:11px 12px;font-size:16px;border:1px solid #cfd6e0;border-radius:10px;background:#fff;color:var(--ink)}
input:focus,select:focus{outline:2px solid #93b4ff;border-color:var(--pri)}
.row{display:grid;grid-template-columns:1fr 1fr;gap:10px}
@media(max-width:480px){.row{grid-template-columns:1fr}}
button.go{width:100%;margin-top:16px;padding:14px;font-size:17px;font-weight:700;color:#fff;background:var(--pri);border:0;border-radius:12px;cursor:pointer}
button.go:hover{background:var(--pri2)}
.dev{display:flex;flex-wrap:wrap;align-items:center;gap:8px 10px;padding:10px 0;border-bottom:1px solid var(--line)}
.dev .ins{flex:1 1 100%;display:grid;grid-template-columns:repeat(3,1fr);gap:8px;padding-left:30px}
.dev .ins label{margin:0;font-size:12px;color:var(--sub);font-weight:400}
.dev .ins input[type=number]{width:100%;margin-top:3px;box-sizing:border-box}
.dev:last-child{border-bottom:0}
.dev .nm{flex:1;font-size:15px}
.dev .nm b{display:block}
.dev .nm span{color:var(--sub);font-size:12.5px}
.dev input[type=number]{padding:8px}
.dev input[type=checkbox]{width:20px;height:20px}
.result{border:2px solid var(--pri);background:#f0f6ff}
.result .big{font-size:32px;font-weight:800;color:var(--pri2);line-height:1.2}
.result .cap{font-size:13px;color:var(--sub)}
table.t{width:100%;border-collapse:collapse;font-size:14.5px;margin-top:8px}
table.t th,table.t td{padding:9px 6px;border-bottom:1px solid var(--line);text-align:right}
table.t th:first-child,table.t td:first-child{text-align:left}
table.t th{color:var(--sub);font-weight:600;font-size:13px}
table.t tr.best td{background:#ecfdf3;font-weight:700}
.note{font-size:13px;color:var(--sub);margin-top:10px}
.warn{color:var(--warn)}
.tips li{margin:6px 0}
.ad-box{border:1px solid #fed7aa;background:#fff7ed;border-radius:14px;padding:16px;margin:14px 0}
.ad-box h3{margin:0 0 4px;font-size:16px}
.ad-box p.dis{margin:0 0 10px;font-size:13px;color:#7c4a14;font-weight:600}
.ad-box a.btn{display:block;margin:8px 0;padding:12px 14px;background:#fff;border:1px solid #fdba74;border-radius:10px;text-decoration:none;color:var(--ink);font-weight:600}
.ad-box a.btn small{display:block;font-weight:400;color:var(--sub)}
.ad-box .demo{font-size:12px;color:#b91c1c;margin-top:6px}
.dis-top{margin:0 0 12px;padding:8px 12px;font-size:13px;line-height:1.5;color:#7c4a14;background:#fff7ed;border:1px solid #fed7aa;border-radius:10px}
.links{display:grid;gap:12px;margin:14px 0}
.links a{display:block;padding:18px;background:#fff;border:1px solid var(--line);border-radius:14px;text-decoration:none;color:var(--ink)}
.links a b{font-size:18px;display:block}
.links a span{color:var(--sub);font-size:14px}
.links a:hover{border-color:var(--pri)}
footer{margin:34px 0 40px;color:var(--sub);font-size:12.5px;line-height:1.6;border-top:1px solid var(--line);padding-top:16px}
.hide{display:none}
details{margin:8px 0}
summary{cursor:pointer;font-weight:600}