:root{
  --accent:#6B72E8; --accent-d:#5258d6; --accent-soft:#EEF0FF;
  --ink:#26283b; --muted:#7b7f97; --dim:#a6aabf;
  --line:#e7e9f2; --card:#ffffff; --bg:#f4f6fb;
  --ok:#27c06a; --off:#c9ccd8; --danger:#e2574a;
  --font:'Pretendard Variable',Pretendard,-apple-system,'Segoe UI','Malgun Gothic',system-ui,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}

/* 상단 헤더 배너 */
.hdr{background:linear-gradient(110deg,#eaf2ff 0%,#f3f0ff 60%,#eef6ff 100%);border-bottom:1px solid var(--line)}
.hdr-in{max-width:1080px;margin:0 auto;padding:18px 24px;display:flex;align-items:center;justify-content:space-between}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;letter-spacing:-.02em;color:var(--ink)}
.brand .mk{width:26px;height:26px;border-radius:8px;background:linear-gradient(150deg,var(--accent),#5a61d6);display:grid;place-items:center;box-shadow:0 4px 12px rgba(91,97,214,.4)}
.brand .mk::before{content:"";width:11px;height:11px;border-radius:3px;background:#fff}
.hdr-in .who{font-size:.88rem;color:var(--muted)}

/* 레이아웃 */
.shell{max-width:1080px;margin:0 auto;padding:26px 24px 60px;display:grid;grid-template-columns:210px 1fr;gap:26px}
@media(max-width:760px){.shell{grid-template-columns:1fr}}
.side{display:flex;flex-direction:column;gap:2px}
.side .nav{display:flex;align-items:center;gap:10px;padding:11px 14px;border-radius:10px;color:var(--muted);font-weight:600;font-size:.92rem;cursor:pointer;border:none;background:none;text-align:left;width:100%}
.side .nav:hover{background:#eef0f7;color:var(--ink)}
.side .nav.on{background:#fff;color:var(--accent);box-shadow:0 1px 4px rgba(20,24,60,.06)}
.side .nav svg{width:17px;height:17px;flex:none}

/* 카드/섹션 */
h1.title{font-size:1.5rem;font-weight:800;letter-spacing:-.02em;margin-bottom:18px}
.sec-h{display:flex;align-items:center;gap:8px;margin:0 0 14px}
.sec-h .bar{width:4px;height:15px;border-radius:2px;background:var(--accent)}
.sec-h h2{font-size:1.02rem;font-weight:700}
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:6px 22px}
.row{display:flex;align-items:center;gap:18px;padding:18px 0;border-bottom:1px solid var(--line)}
.row:last-child{border-bottom:none}
.row .lab{width:150px;flex:none}
.row .lab .t{font-weight:700;font-size:.92rem}
.row .lab .d{font-size:.78rem;color:var(--dim)}
.row .body{flex:1;display:flex;align-items:center;gap:10px;flex-wrap:wrap}

/* 입력/버튼 */
input[type=text],input[type=email],input[type=password]{
  font-family:inherit;font-size:.92rem;color:var(--ink);background:#fbfbfe;
  border:1px solid var(--line);border-radius:9px;padding:9px 12px;width:100%;max-width:340px;outline:none}
input:focus{border-color:var(--accent);background:#fff}
input:disabled{background:#f1f2f6;color:var(--muted)}
.btn{font-family:inherit;font-weight:700;font-size:.88rem;border-radius:9px;padding:9px 16px;border:1px solid transparent;cursor:pointer;white-space:nowrap}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-d)}
.btn-primary:disabled{opacity:.55;cursor:default}
.btn-ghost{background:#fff;color:var(--muted);border-color:var(--line)}
.btn-ghost:hover{color:var(--ink);border-color:var(--dim)}
.btn-danger{background:#fff;color:var(--danger);border-color:#f3cdc8}
.btn-danger:hover{background:#fdf2f1}
.btn-link{background:none;border:none;color:var(--accent);cursor:pointer;font-weight:600;padding:4px}
.btn-sm{padding:6px 12px;font-size:.82rem}

/* 장치 표 */
table{width:100%;border-collapse:collapse;font-size:.9rem}
th,td{text-align:left;padding:13px 12px;border-bottom:1px solid var(--line)}
th{font-size:.78rem;color:var(--muted);font-weight:700}
td .me{display:inline-block;margin-left:6px;font-size:.72rem;color:var(--accent);background:var(--accent-soft);padding:1px 7px;border-radius:20px}
.dot{display:inline-block;width:9px;height:9px;border-radius:50%}
.dot.on{background:var(--ok)} .dot.off{background:var(--off)}

/* 인증 카드(가입/로그인/재설정) */
.auth-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:30px 16px}
.auth{width:100%;max-width:400px;background:#fff;border:1px solid var(--line);border-radius:16px;padding:30px 28px;box-shadow:0 12px 40px rgba(25,28,60,.08)}
.auth .brand{justify-content:center;margin-bottom:6px}
.auth h1{font-size:1.25rem;font-weight:800;text-align:center;margin-bottom:4px}
.auth .sub{text-align:center;color:var(--muted);font-size:.86rem;margin-bottom:22px}
.field{margin-bottom:14px}
.field label{display:block;font-size:.82rem;color:var(--muted);font-weight:600;margin-bottom:5px}
.field input{max-width:none}
.inline{display:flex;gap:8px}
.inline input{flex:1}
.auth .btn-primary{width:100%;padding:11px;margin-top:6px}
.foot{text-align:center;margin-top:18px;font-size:.85rem;color:var(--muted)}
.msg{font-size:.85rem;padding:10px 12px;border-radius:9px;margin-bottom:14px;display:none}
.msg.show{display:block}
.msg.err{background:#fdeceb;color:#b23b30}
.msg.ok{background:#e9f8ef;color:#1c8b50}
.hint{font-size:.78rem;color:var(--dim);margin-top:4px}
.status-line{font-size:.85rem;color:var(--muted);margin-top:12px;min-height:1.2em}