:root{--bg: #f4f6f8;--ink: #16191e;--muted: #5b6570;--line: #e4e8ee;--card: #ffffff;--accent: #1aa4ff;--danger: #e5484d;--ok: #1a9e6a;--sidebar: #0f3d5c}*{box-sizing:border-box}html,body{margin:0;min-height:100%;background:var(--bg);color:var(--ink);font:15px/1.45 Pretendard,Apple SD Gothic Neo,sans-serif}button,input,textarea,select{font:inherit}a{color:var(--accent)}.login{min-height:100vh;display:grid;place-items:center;padding:24px}.login-card{width:min(420px,100%);background:var(--card);border:1px solid var(--line);border-radius:12px;padding:32px 28px}.login-card h1{margin:0 0 8px;font-size:22px}.login-card p{margin:0 0 24px;color:var(--muted)}.shell{display:grid;grid-template-columns:220px 1fr;min-height:100vh}.nav{background:var(--sidebar);color:#fff;padding:24px 16px}.nav h1{margin:0 16px 24px;font-size:18px}.nav a,.nav button.link{display:block;width:100%;text-align:left;background:none;border:0;color:#d5dbe3;text-decoration:none;padding:10px 16px;border-radius:8px;cursor:pointer}.nav a.active,.nav a:hover,.nav button.link:hover{background:#16527a;color:#fff}.main{padding:28px 32px 48px}.main h2{margin:0 0 8px;font-size:22px}.lead{margin:0 0 20px;color:var(--muted)}.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:12px;margin-bottom:24px}.card,.panel{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:16px 18px}.card strong{display:block;font-size:28px;margin-top:6px}.row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:12px}label.field{display:flex;flex-direction:column;gap:4px;font-size:13px;color:var(--muted)}input,textarea,select{border:1px solid var(--line);border-radius:8px;padding:10px 12px;background:#fff}textarea{min-height:120px;width:min(640px,100%)}button.primary,button.ghost,button.danger{border-radius:8px;padding:10px 14px;border:1px solid transparent;cursor:pointer}button.primary{background:var(--accent);color:#fff}button.ghost{background:#fff;border-color:var(--line)}button.danger{background:var(--danger);color:#fff}table{width:100%;border-collapse:collapse;background:var(--card);border:1px solid var(--line);border-radius:10px;overflow:hidden}th,td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--line);vertical-align:top}th{background:#fafbfc;font-size:13px;color:var(--muted)}.err{color:var(--danger);margin:8px 0 16px}.ok{color:var(--ok)}.muted{color:var(--muted);font-size:13px}.actions{display:flex;flex-wrap:wrap;gap:6px}