:root{--navy:#0a174e;--navy-2:#1b2a6b;--green:#a5ce3a;--green-ink:#4d6b0f;--ink:#1b1f2a;--muted:#667085;--line:#e4e7ec;--bg:#f5f6f8;--card:#fff;--warn-bg:#fff6e0;--warn-ink:#8a5a00;--bad:#b42318;--bad-bg:#fdecea;--ok-bg:#eef7dc;--radius:10px;color:var(--ink);background:var(--bg);font-family:Pretendard,Apple SD Gothic Neo,Malgun Gothic,system-ui,sans-serif;font-size:15px;line-height:1.5}*{box-sizing:border-box}body{margin:0}h1{margin:0 0 4px;font-size:22px}h2{margin:0 0 12px;font-size:16px}h3{margin:12px 0 6px;font-size:14px}p{margin:0 0 8px}a{color:var(--navy-2)}.muted{color:var(--muted)}.small{font-size:13px}.mono{font-variant-numeric:tabular-nums}.pre{white-space:pre-wrap}.error{color:var(--bad);background:var(--bad-bg);border-radius:8px;padding:8px 12px}.ok{color:var(--green-ink);background:var(--ok-bg);border-radius:8px;padding:8px 12px}.warn{color:var(--warn-ink);background:var(--warn-bg);border-radius:8px;padding:6px 10px}.notice-bar{margin:8px 16px 0}.swatch{vertical-align:middle;border:1px solid #00000026;border-radius:4px;width:28px;height:16px;display:inline-block}.env-banner{background:var(--green);color:var(--navy);text-align:center;letter-spacing:.02em;padding:4px 8px;font-size:13px;font-weight:700}.topbar{background:var(--navy);color:#fff;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;padding:10px 20px;display:flex}.brand{align-items:center;gap:10px;font-size:16px;font-weight:700;display:flex}.brand-mark{background:var(--green);width:32px;height:32px;color:var(--navy);border-radius:50%;place-items:center;font-size:12px;font-weight:800;display:inline-grid}.brand-mark.big{width:48px;height:48px;font-size:15px}.who{flex-wrap:wrap;align-items:center;gap:10px;display:flex}.who .muted{color:#c9cfe3}.who-name{font-weight:600}.pill{background:#ffffff24;border-radius:999px;padding:2px 10px;font-size:13px}.layout{grid-template-columns:180px 1fr;min-height:calc(100vh - 56px);display:grid}.sidenav{border-right:1px solid var(--line);background:#fff;flex-direction:column;gap:2px;padding:16px 10px;display:flex}.sidenav a{color:var(--ink);border-radius:8px;padding:9px 12px;font-weight:500;text-decoration:none}.sidenav a:hover{background:var(--bg)}.sidenav a.active{background:var(--navy);color:#fff}.content{width:100%;max-width:1200px;padding:24px}@media (width<=760px){.layout{grid-template-columns:1fr}.sidenav{border-right:0;border-bottom:1px solid var(--line);flex-direction:row;overflow-x:auto}.content{padding:16px}}.stack{flex-direction:column;gap:16px;display:flex}.page-head .back{font-size:13px;text-decoration:none}.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:16px 18px}.card.narrow{width:100%;max-width:400px}.card.action{border-color:var(--navy-2);box-shadow:inset 4px 0 0 var(--green)}.two-col{grid-template-columns:1fr 1fr;gap:16px;display:grid}@media (width<=900px){.two-col{grid-template-columns:1fr}}.center-page{place-items:center;min-height:80vh;padding:16px;display:grid}.login-bg{background:linear-gradient(180deg, var(--navy) 0 38%, var(--bg) 38%);min-height:calc(100vh - 25px)}.login-head{align-items:center;gap:14px;margin-bottom:16px;display:flex}.count{background:var(--navy);color:#fff;text-align:center;border-radius:999px;min-width:24px;padding:0 8px;font-size:13px;display:inline-block}.count.muted{background:var(--line);color:var(--ink)}.empty{padding:8px 0}.btn{border:1px solid var(--line);color:var(--ink);font:inherit;cursor:pointer;background:#fff;border-radius:8px;padding:8px 14px;font-weight:600}.btn:hover{border-color:var(--navy-2)}.btn:disabled{opacity:.55;cursor:not-allowed}.btn.primary{background:var(--navy);color:#fff;border-color:var(--navy)}.btn.primary:hover{background:var(--navy-2)}.btn.ghost{background:0 0}.topbar .btn.ghost{color:#fff;border-color:#ffffff59}.btn.small{padding:4px 10px;font-size:13px}.btn.wide{width:100%;margin:8px 0 12px}.btn.danger{color:var(--bad)}.actions{flex-wrap:wrap;align-items:center;gap:8px;margin-top:8px;display:flex}.form{flex-direction:column;gap:12px;display:flex}.field{flex-direction:column;gap:4px;font-size:14px;font-weight:600;display:flex}.field input,.field textarea,.field select,.filters input,.filters select{font:inherit;background:#fff;border:1px solid #cfd4dc;border-radius:8px;padding:8px 10px;font-weight:400}.field input:focus,.field textarea:focus{outline:2px solid var(--green);outline-offset:1px}.row2{grid-template-columns:1fr 1fr;gap:12px;display:grid}.seg{border:1px solid var(--line);border-radius:8px;gap:3px;width:fit-content;margin:0;padding:3px;display:inline-flex}.seg label{cursor:pointer;border-radius:6px;padding:6px 16px;font-weight:600}.seg label.on{background:var(--navy);color:#fff}.seg input{opacity:0;pointer-events:none;position:absolute}.pick-list{border:1px solid var(--line);border-radius:8px;max-height:260px;margin:6px 0 0;padding:0;list-style:none;overflow:auto}.pick-list li{border-bottom:1px solid var(--line)}.pick-list li:last-child{border-bottom:0}.pick-list li.muted{padding:8px 10px}.pick-list button{all:unset;cursor:pointer;width:100%;padding:8px 10px;display:block}.pick-list button:hover{background:var(--bg)}.picked{border:1px solid var(--line);border-radius:8px;flex-wrap:wrap;align-items:center;gap:8px;padding:8px 10px;font-weight:400;display:flex}.picked .warn{flex-basis:100%}.filters{flex-wrap:wrap;gap:8px;margin-bottom:12px;display:flex}table.grid{border-collapse:collapse;width:100%}.grid th,.grid td{text-align:left;border-bottom:1px solid var(--line);vertical-align:top;padding:8px 10px}.grid th{color:var(--muted);background:#fafbfc;font-size:13px;font-weight:600}.grid tr.clickable{cursor:pointer}.grid tr.clickable:hover{background:#f7f9fd}.num{color:var(--muted);font-variant-numeric:tabular-nums}.kind{background:var(--line);border-radius:6px;padding:1px 8px;font-size:12px;font-weight:700;display:inline-block}.kind-withdraw{color:var(--bad);background:#fdecea}.kind-leave{color:var(--navy-2);background:#e8eefc}.stage{background:var(--line);border-radius:999px;padding:2px 8px;font-size:12px;font-weight:700;display:inline-block}.stage-teacher,.stage-admin{color:var(--warn-ink);background:#fff3d6}.stage-executive{color:var(--navy-2);background:#e8eefc}.stage-execute{color:var(--green-ink);background:#e9f5d1}.stage-done{background:var(--ok-bg);color:var(--green-ink)}.stage-cancelled,.stage-failed{color:var(--muted);background:#f2f4f7}.st{background:var(--ok-bg);color:var(--green-ink);border-radius:999px;padding:1px 8px;font-size:12px;font-weight:700}.st-on_leave{color:var(--navy-2);background:#e8eefc}.st-withdrawn,.st-cancelled{color:var(--muted);background:#f2f4f7}.st-upcoming{color:var(--warn-ink);background:#fff3d6}.kv{grid-template-columns:150px 1fr;gap:6px 12px;margin:0;display:grid}.kv dt{color:var(--muted);font-size:13px}.kv dd{margin:0}.sub{border-top:1px solid var(--line);margin-top:12px;padding-top:4px}.timeline{margin:0;padding:0;list-style:none}.timeline li{grid-template-columns:18px 130px 1fr;align-items:center;gap:8px;padding:6px 0;display:grid;position:relative}.timeline li:not(:last-child):after{content:"";background:var(--line);width:2px;position:absolute;top:22px;bottom:-8px;left:5px}.timeline .dot{z-index:1;background:#fff;border:2px solid #cfd4dc;border-radius:50%;width:12px;height:12px}.timeline li.done .dot{background:var(--green);border-color:var(--green-ink)}.timeline li.bad .dot{background:var(--bad);border-color:var(--bad)}.timeline .t-label{font-weight:600}.tabs{gap:6px;display:flex}.tabs button{font:inherit;border:1px solid var(--line);cursor:pointer;background:#fff;border-radius:999px;padding:6px 16px;font-weight:600}.tabs button.on{background:var(--navy);color:#fff;border-color:var(--navy)}.week{grid-template-columns:repeat(7,minmax(140px,1fr));gap:10px;display:grid;overflow-x:auto}.day{padding:12px}.day h2{text-align:center}.slot{border:1px solid var(--line);border-left:4px solid var(--green);border-radius:8px;margin-bottom:8px;padding:8px}.slot header{flex-wrap:wrap;justify-content:space-between;align-items:baseline;gap:0 6px;display:flex}.slot header strong{white-space:nowrap}.slot p{margin:2px 0}.slot .over{color:var(--warn-ink);font-weight:700}.slot .names{color:var(--muted)}.visually-hidden{clip:rect(0 0 0 0);white-space:nowrap;width:1px;height:1px;position:absolute;overflow:hidden}.file-slot{border-top:1px solid 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