:root{--bg:#f7f8fa;--card:#fff;--text:#18212f;--muted:#667085;--line:#e5e7eb;--accent:#1f6feb}
*{box-sizing:border-box}body{margin:0;font-family:Arial,"Noto Sans KR",sans-serif;background:var(--bg);color:var(--text);line-height:1.7}.wrap{max-width:1100px;margin:auto;padding:0 20px}header{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:5}.nav{height:66px;display:flex;align-items:center;justify-content:space-between}.brand{font-weight:800;font-size:21px;color:var(--text);text-decoration:none}nav a,footer a{color:var(--muted);text-decoration:none;margin-left:18px}.hero{padding:74px 0 45px}.hero h1{font-size:48px;line-height:1.15;margin:12px 0}.hero p{font-size:18px;color:var(--muted);max-width:650px}.eyebrow,.tag{font-size:13px;font-weight:700;color:var(--accent)}.btn{display:inline-block;border:0;background:var(--text);color:#fff;padding:13px 20px;border-radius:10px;text-decoration:none;font-weight:700;cursor:pointer}.notice{background:#edf5ff;border:1px solid #d6e8ff;border-radius:14px;padding:18px 22px;display:flex;gap:18px;margin-bottom:36px}.notice span{color:var(--muted)}h2{margin-top:34px}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.card{display:block;background:var(--card);border:1px solid var(--line);border-radius:16px;padding:22px;text-decoration:none;color:var(--text);transition:.15s}.card:hover{transform:translateY(-2px);box-shadow:0 8px 25px rgba(0,0,0,.06)}.card h3{margin:7px 0}.card p{color:var(--muted);font-size:14px}.breadcrumb{margin-top:26px;color:var(--muted);font-size:14px}.breadcrumb a{color:var(--accent)}.article-head{padding:34px 0 18px}.article-head h1{font-size:40px;margin:8px 0}.article-head p{color:var(--muted);font-size:18px}.calculator{background:#fff;border:1px solid var(--line);border-radius:18px;padding:26px;margin:15px 0 30px}.field{margin:12px 0}.field label{font-weight:700;display:block;margin-bottom:6px}.field input{width:100%;padding:12px;border:1px solid #cfd4dc;border-radius:9px;font-size:16px}.result{margin-top:16px;background:#f3f6fb;border-radius:10px;padding:18px;font-weight:700}.content{background:#fff;border:1px solid var(--line);border-radius:18px;padding:28px}.related{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}.related a{background:#fff;border:1px solid var(--line);padding:13px 15px;border-radius:10px;text-decoration:none;color:var(--text)}.simple{background:#fff;border:1px solid var(--line);border-radius:18px;padding:30px;margin:40px 0}footer{margin-top:60px;padding:36px 0;background:#fff;border-top:1px solid var(--line);color:var(--muted);font-size:14px}footer a:first-child{margin-left:0}
@media(max-width:800px){.grid{grid-template-columns:1fr}.hero h1{font-size:38px}.article-head h1{font-size:32px}.notice{display:block}.related{grid-template-columns:1fr}nav a{margin-left:10px;font-size:14px}}