:root{--bg:#0f1115;--fg:#e8eaed;--mut:#9aa0a6;--card:#181b21;--line:#2a2e36;--ac:#6aa9ff}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.7 -apple-system,"Apple SD Gothic Neo","Noto Sans KR","Malgun Gothic",system-ui,sans-serif}
header,main,footer{max-width:880px;margin:0 auto;padding:16px 20px}
header{display:flex;gap:16px;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}
header nav a{margin-left:14px;color:var(--mut);text-decoration:none}
header nav a:hover,header b{color:var(--fg)}
h1{font-size:2rem;margin:.6em 0 .2em}h2{margin-top:2em}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:18px;margin:14px 0}
.btn,button{background:var(--ac);color:#04122a;border:0;border-radius:8px;padding:10px 16px;font:inherit;font-weight:600;cursor:pointer;text-decoration:none;display:inline-block}
.btn.off,button:disabled{background:#3a3f48;color:var(--mut);cursor:not-allowed}
button.ghost{background:transparent;color:var(--fg);border:1px solid var(--line)}
label{display:block;margin:12px 0 4px;color:var(--mut)}
input,textarea,select{width:100%;background:#0c0e12;color:var(--fg);border:1px solid var(--line);border-radius:8px;padding:10px;font:inherit}
textarea{min-height:140px;resize:vertical}
.msg{margin-top:12px;min-height:1.4em}.ok{color:#6fdc8c}.err{color:#ff8a80}
.mut{color:var(--mut);font-size:.9rem}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:14px}
.item{border-top:1px solid var(--line);padding:12px 0}
.badge{font-size:.75rem;border:1px solid var(--line);border-radius:99px;padding:1px 8px;color:var(--mut);margin-left:6px}
.brand{display:inline-flex;align-items:center;gap:12px;line-height:1;color:var(--fg);text-decoration:none}
.brand img{display:block;flex:none}
h1.title{display:flex;align-items:center;gap:14px}
h1 .hero{display:block;flex:none}
footer{display:flex;flex-wrap:wrap;justify-content:center;align-items:baseline;gap:4px 12px;text-align:center;border-top:1px solid var(--line);margin-top:32px;font-size:.8rem;line-height:1.5;color:var(--mut)}
footer span:first-child{font-size:.95rem;color:var(--fg)}