:root{
  --bg:#0f1115; --panel:#171a21; --panel2:#1e222b; --line:#2a2f3a;
  --fg:#e7eaf0; --muted:#9aa3b2; --accent:#4f8cff; --accent2:#3a6fd8;
  --ok:#2ecc71; --err:#ff6b6b; --warn:#f6c343;
}
*{box-sizing:border-box}
html,body{margin:0}
body{
  background:var(--bg); color:var(--fg);
  font-family:system-ui,-apple-system,"Segoe UI",Roboto,"Noto Sans KR",sans-serif;
  line-height:1.6;
}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}

.topbar{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 24px;background:var(--panel);border-bottom:1px solid var(--line);
}
.brand{font-weight:700;font-size:18px;color:var(--fg)}
.topbar nav{display:flex;align-items:center;gap:16px}
.topbar .who{color:var(--muted)}
.topbar .logout{color:var(--muted)}

.container{max-width:960px;margin:0 auto;padding:40px 24px}

.hero{text-align:center;padding:40px 0 20px}
.hero h1{font-size:34px;margin:0 0 12px}
.lead{color:var(--muted);font-size:17px;max-width:560px;margin:0 auto 24px}
.cta{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}

.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:40px}
.step{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:20px}
.step .n{display:inline-grid;place-items:center;width:28px;height:28px;border-radius:50%;
  background:var(--accent);color:#fff;font-weight:700;margin-bottom:8px}
.step h3{margin:6px 0}
.step p{color:var(--muted);margin:0;font-size:14px}

.btn{display:inline-block;background:var(--accent);color:#fff;border:0;border-radius:8px;
  padding:10px 18px;font-size:15px;cursor:pointer}
.btn:hover{background:var(--accent2);text-decoration:none}
.btn.ghost{background:transparent;border:1px solid var(--line);color:var(--fg)}
.btn.sm{padding:6px 12px;font-size:13px}

.card{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:28px}
.card.narrow{max-width:420px;margin:30px auto}
.card h2{margin-top:0}

.form{display:flex;flex-direction:column;gap:14px;margin-top:8px}
.form label{display:flex;flex-direction:column;gap:6px;font-size:14px;color:var(--muted)}
.form input{background:var(--panel2);border:1px solid var(--line);border-radius:8px;
  padding:10px 12px;color:var(--fg);font-size:15px}
.form input:focus{outline:none;border-color:var(--accent)}

.muted{color:var(--muted)}
.error{background:rgba(255,107,107,.12);border:1px solid var(--err);color:#ffb3b3;
  padding:10px 12px;border-radius:8px}
.ok{background:rgba(46,204,113,.12);border:1px solid var(--ok);color:#a6f0c6;
  padding:10px 12px;border-radius:8px}

.dash-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
.dash-head h2{margin:0}

.tbl{width:100%;border-collapse:collapse;background:var(--panel);border:1px solid var(--line);
  border-radius:12px;overflow:hidden}
.tbl th,.tbl td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--line)}
.tbl th{color:var(--muted);font-size:13px;font-weight:600}
.tbl tr:last-child td{border-bottom:0}
.badge{padding:2px 10px;border-radius:999px;font-size:12px}
.badge.active{background:rgba(46,204,113,.15);color:#8ef0b5}
.badge.pending{background:rgba(246,195,67,.15);color:#f6c343}

.code{background:#0b0d11;border:1px solid var(--line);border-radius:8px;padding:12px 14px;
  color:#cfe3ff;font-family:ui-monospace,"Cascadia Code",Consolas,monospace;font-size:13px;
  white-space:pre-wrap;word-break:break-all;overflow-x:auto}
code{background:#0b0d11;border:1px solid var(--line);border-radius:5px;padding:1px 6px;
  font-family:ui-monospace,Consolas,monospace;font-size:13px;color:#cfe3ff}

.foot{text-align:center;color:var(--muted);padding:30px;border-top:1px solid var(--line);font-size:13px}

@media(max-width:640px){.steps{grid-template-columns:1fr}}