:root{--bg:#0f1117;--surface:#161a23;--border:#262c3a;--text:#e7eaf1;--muted:#8b93a7;--accent:#4f7cff;--ok:#37b877;--warn:#e2b93b}@media (prefers-color-scheme:light){:root{--bg:#f5f6f8;--surface:#fff;--border:#e2e5ec;--text:#191c23;--muted:#6b7280;--accent:#2f5fe0}}*{box-sizing:border-box}body{background:var(--bg);color:var(--text);margin:0;font-family:-apple-system,Apple SD Gothic Neo,Pretendard,sans-serif;line-height:1.5}a{color:var(--accent)}.login-wrap{place-items:center;min-height:100dvh;padding:16px;display:grid}.login-card{background:var(--surface);border:1px solid var(--border);border-radius:14px;width:100%;max-width:360px;padding:28px}.login-card h1{margin:0 0 4px;font-size:22px}.login-card .sub{color:var(--muted);margin:0 0 20px;font-size:13.5px}.login-card form{gap:10px;display:grid}.login-card input{border:1px solid var(--border);background:var(--bg);color:var(--text);border-radius:9px;padding:11px 12px;font-size:15px}.login-card>button{background:var(--accent);color:#fff;cursor:pointer;border:none;border-radius:9px;width:100%;margin-bottom:10px;padding:11px;font-size:15px;font-weight:600}.login-card form button{background:var(--accent);color:#fff;cursor:pointer;border:none;border-radius:9px;padding:11px;font-size:15px;font-weight:600}.login-card button:disabled{opacity:.6}.login-card .ok{color:var(--ok);font-size:14px}.login-card .err{color:#e2725b;margin:0 0 10px;font-size:13px}.login-card .link-btn{width:auto;color:var(--muted);background:0 0;padding:0;font-size:13px;font-weight:400;text-decoration:underline}.home-wrap{max-width:860px;margin:0 auto;padding:28px 20px 60px}.home-head{flex-wrap:wrap;justify-content:space-between;align-items:baseline;gap:8px;display:flex}.home-head h1{margin:0;font-size:24px}.who{color:var(--muted);align-items:center;gap:10px;font-size:13px;display:flex}.role-chip{background:var(--accent);color:#fff;border-radius:999px;padding:2px 10px;font-size:12px;font-weight:600}.readonly-banner{border:1px solid var(--warn);color:var(--warn);background:#e2b93b26;border-radius:9px;padding:10px 14px;font-size:13.5px}.screen-grid{grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:12px;margin-top:24px;display:grid}.screen-card{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:16px}.screen-card h2{margin:0 0 4px;font-size:16px}.screen-card p{color:var(--muted);margin:0 0 10px;font-size:13px}.screen-card .soon{color:var(--muted);opacity:.7;font-size:11.5px}.notice{text-align:center;max-width:480px;margin:80px auto}.page-wrap{max-width:920px;margin:0 auto;padding:24px 20px 60px}.page-head{flex-wrap:wrap;align-items:center;gap:14px;margin-bottom:20px;display:flex}.page-head h1{flex:1;margin:0;font-size:20px}.back{color:var(--muted);font-size:13px;text-decoration:none}.back:hover{color:var(--text)}.muted{color:var(--muted);font-size:13.5px}.err{color:#e2725b;font-size:13.5px}.ok{color:var(--ok);font-size:13px}input[type=date],input[type=text],input[type=search]{border:1px solid var(--border);background:var(--bg);color:var(--text);border-radius:8px;padding:7px 10px;font-size:13.5px}.btn-primary{background:var(--accent);color:#fff;cursor:pointer;border:none;border-radius:8px;padding:8px 16px;font-size:13.5px;font-weight:600}.btn-primary:disabled{opacity:.45;cursor:default}.btn-danger{color:#fff;cursor:pointer;background:#e2725b;border:none;border-radius:8px;padding:8px 16px;font-size:13.5px;font-weight:600}.confirm-overlay{z-index:50;background:#00000073;place-items:center;padding:16px;display:grid;position:fixed;inset:0}.confirm-card{background:var(--surface);border:1px solid var(--border);border-radius:12px;width:100%;max-width:360px;padding:20px}.confirm-card p{margin:0 0 16px;font-size:14px}.confirm-actions{justify-content:flex-end;gap:8px;display:flex}.confirm-actions button{border:1px solid var(--border);background:var(--bg);color:var(--text);cursor:pointer;border-radius:8px;padding:7px 14px;font-size:13px}.lesson-layout{grid-template-columns:220px 1fr;gap:16px;display:grid}.lesson-tabs{flex-direction:column;gap:6px;display:flex}.tab{border:1px solid var(--border);background:var(--surface);color:var(--text);cursor:pointer;text-align:left;border-radius:9px;flex-direction:column;align-items:flex-start;gap:2px;padding:10px 12px;display:flex}.tab.active{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent)}.tab-time{color:var(--muted);font-size:11.5px}.tab-state{background:var(--border);border-radius:999px;padding:1px 7px;font-size:10.5px}.tab-state.s-정상{color:var(--ok);background:#37b87733}.tab-state.s-결강,.tab-state.s-미진행{color:#e2725b;background:#e2725b33}.lesson-detail{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:18px}.lesson-head{flex-wrap:wrap;justify-content:space-between;align-items:flex-start;gap:10px;margin-bottom:14px;display:flex}.state-row{flex-wrap:wrap;gap:6px;display:flex}.state-row .btn-primary{background:var(--border);color:var(--text);padding:5px 10px;font-size:12px;font-weight:500}.state-row .btn-primary:not(:disabled):hover{background:var(--accent);color:#fff}.lesson-detail label{color:var(--muted);margin-bottom:12px;font-size:12.5px;display:block}.lesson-detail textarea,.lesson-detail input[type=number]{border:1px solid var(--border);background:var(--bg);width:100%;color:var(--text);resize:vertical;border-radius:8px;min-height:60px;margin-top:4px;padding:8px 10px;font-family:inherit;font-size:13.5px;display:block}.save-row{align-items:center;gap:12px;margin-top:8px;display:flex}@media (max-width:640px){.lesson-layout{grid-template-columns:1fr}}.queue-list{gap:12px;display:grid}.queue-card{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:16px}.queue-head{align-items:center;gap:10px;margin-bottom:8px;font-size:13.5px;display:flex}.tmpl{background:var(--accent);color:#fff;border-radius:6px;padding:2px 8px;font-size:11.5px;font-weight:600}.preview{white-space:pre-wrap;background:var(--bg);border-radius:8px;margin:0 0 10px;padding:10px 12px;font-size:12.5px}.queue-meta{color:var(--muted);flex-wrap:wrap;gap:14px;margin-bottom:10px;font-size:12px;display:flex}.gate{color:var(--warn)}.student-list{grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:10px;display:grid}.student-card{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:14px}.student-head{justify-content:space-between;align-items:baseline;margin-bottom:4px;display:flex}.status{background:var(--border);border-radius:999px;padding:1px 8px;font-size:11px}.status.s-재원중{color:var(--ok);background:#37b87733}.progress{margin:6px 0;font-size:12.5px}.settle-row{flex-wrap:wrap;gap:10px;margin-top:8px;display:flex}.settle-chip{color:var(--muted);align-items:center;gap:4px;font-size:12px;display:flex}.lead-list{gap:12px;display:grid}.lead-card{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:14px}.lead-head{align-items:center;gap:10px;margin-bottom:4px;display:flex}.lead-id{color:var(--muted);font-family:ui-monospace,monospace;font-size:11.5px}.kpi-grid{grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:12px;margin-bottom:28px;display:grid}.kpi-tile{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:16px}.kpi-tile.warn{border-color:var(--warn)}.kpi-label{color:var(--muted);margin-bottom:6px;font-size:12px;display:block}.kpi-value{font-size:20px;font-weight:700}.rev-table{border-collapse:collapse;width:100%;font-size:13.5px}.rev-table th,.rev-table td{text-align:left;border-bottom:1px solid var(--border);padding:8px 10px}