:root{--bg: #f4f5f6;--surface: #ffffff;--ink: #1f2328;--muted: #6b7280;--line: #e3e6e8;--dark: #2b2f33;--charcoal: #1c1f22;--accent: #2563eb;--ok: #15803d;--warn: #b45309;--bad: #b91c1c}*{box-sizing:border-box}body{margin:0;font-family:Segoe UI,Tahoma,Arial,sans-serif;background:var(--bg);color:var(--ink)}a{color:var(--accent);text-decoration:none}.app-shell{display:flex;min-height:100vh}.sidebar{width:250px;background:var(--charcoal);color:#e7eaed;display:flex;flex-direction:column;position:sticky;top:0;height:100vh}.sidebar h2{font-size:16px;padding:18px 16px 6px;margin:0}.sidebar nav{display:flex;flex-direction:column;padding:8px;gap:2px}.sidebar a,.sidebar button.link{color:#d6dade;padding:9px 12px;border-radius:8px;border:0;background:transparent;text-align:left;cursor:pointer;font-size:14px}.sidebar a.active,.sidebar a:hover,.sidebar button.link:hover{background:#33383d;color:#fff}.main{flex:1;display:flex;flex-direction:column;min-width:0}.topbar{background:var(--surface);border-bottom:1px solid var(--line);padding:12px 20px;display:flex;justify-content:space-between;align-items:center;gap:12px}.content{padding:22px;max-width:1180px;width:100%;margin:0 auto}.card{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:16px;margin-bottom:14px}.btn{border:1px solid var(--line);background:var(--surface);padding:8px 14px;border-radius:8px;cursor:pointer;font-size:14px}.btn.primary{background:var(--charcoal);color:#fff;border-color:var(--charcoal)}.btn.danger{background:#fef2f2;color:var(--bad);border-color:#fecaca}.btn.small{padding:5px 10px;font-size:12px}input,select,textarea{border:1px solid var(--line);border-radius:8px;padding:9px 11px;font-size:14px;width:100%}label{font-size:13px;color:var(--muted);display:block;margin:10px 0 5px}table.grid{width:100%;border-collapse:collapse;font-size:14px}table.grid th,table.grid td{border:1px solid var(--line);padding:8px;text-align:left}.meta{font-size:12px;color:var(--muted)}.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.footer{text-align:center;color:var(--muted);font-size:12px;padding:18px}.a4-flow{display:flex;justify-content:center}.a4{width:210mm;max-width:100%;min-height:297mm;background:#fff;margin:0 auto 18px;padding:22mm 18mm;border:1px solid var(--line);box-shadow:0 2px 10px #00000014;position:relative}.a4 h1{font-size:26px}.a4 h2{font-size:21px}.a4 h3{font-size:17px}.a4 table{border-collapse:collapse;width:100%}.a4 table th,.a4 table td{border:1px solid #999;padding:6px}.a4 img{max-width:100%;height:auto}.a4-lite h1{font-size:22px}.a4-lite h2{font-size:18px}.a4-lite h3{font-size:15px}.a4-lite table{border-collapse:collapse;width:100%}.a4-lite table th,.a4-lite table td{border:1px solid #999;padding:5px}.a4-lite img{max-width:100%;height:auto}.a4-lite ul,.a4-lite ol{padding-left:22px}.page-break{position:absolute;left:0;right:0;border-top:2px dashed #94a3b8;pointer-events:none}.page-break span{position:absolute;right:8px;top:-11px;background:#64748b;color:#fff;font-size:11px;padding:1px 10px;border-radius:10px}.ribbon{background:#fff;border:1px solid var(--line);border-radius:10px 10px 0 0;position:sticky;top:0;z-index:5}.ribbon-tabs{display:flex;gap:4px;padding:6px 10px 0;border-bottom:1px solid var(--line)}.ribbon-tab{font-size:13px;padding:5px 14px;border:1px solid transparent;border-bottom:0;border-radius:6px 6px 0 0;color:var(--muted)}.ribbon-tab.active{color:var(--ink);font-weight:600;border-color:var(--line);background:#f8fafc}.ribbon-groups{display:flex;flex-wrap:wrap;align-items:stretch;padding:6px 8px;gap:0}.ribbon-group{display:flex;flex-direction:column;padding:2px 10px 4px;border-right:1px solid var(--line)}.ribbon-group:last-child{border-right:0}.ribbon-controls{display:flex;align-items:center;gap:2px}.ribbon-label{font-size:11px;color:var(--muted);text-align:center;margin-top:3px}.tool{width:32px;height:32px;display:inline-flex;align-items:center;justify-content:center;background:transparent;border:1px solid transparent;border-radius:6px;cursor:pointer;color:var(--ink);padding:0}.tool:hover{background:#eef1f4;border-color:var(--line)}.tool.on{background:#dbe4ee;border-color:#b9c8da}.tool-select{width:auto;padding:5px 6px;font-size:13px;margin-left:2px}.color-tool{position:relative;overflow:hidden}.color-tool input[type=color]{position:absolute;top:0;right:0;bottom:0;left:0;opacity:0;cursor:pointer;width:100%;height:100%}.color-a{font-weight:700;font-size:16px;font-family:Georgia,serif}.color-bar{position:absolute;bottom:4px;left:7px;right:7px;height:3px;border-radius:2px}.hl-mark{font-size:13px;font-weight:600;background:#fef08a;padding:0 3px;border-radius:3px}.pdf-export{font-family:Segoe UI,Tahoma,Arial,sans-serif;color:#111}@media print{body *{visibility:hidden}.print-area,.print-area *{visibility:visible}.print-area{position:absolute;left:0;top:0;width:100%}@page{size:A4;margin:18mm}}.toolbar{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:10px;position:sticky;top:0;background:#fff;padding:8px 0;z-index:5}.toolbar button,.toolbar select,.toolbar input[type=color]{width:auto;padding:6px 9px;font-size:13px}.toolbar button.on{background:var(--charcoal);color:#fff}.diff-add{background:#dcfce7}.diff-del{background:#fee2e2;text-decoration:line-through}.gallery{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:12px}.gallery img{width:100%;height:160px;object-fit:cover;border-radius:8px;border:1px solid var(--line);cursor:zoom-in}.lightbox{position:fixed;top:0;right:0;bottom:0;left:0;background:#000c;display:flex;align-items:center;justify-content:center;z-index:50;padding:20px}.lightbox img{max-width:92vw;max-height:88vh}.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px}.login-card{width:380px;max-width:100%}@media (max-width: 860px){.sidebar{display:none}.mobile-nav{display:flex!important}.a4{padding:12mm 8mm}}.mobile-nav{display:none;gap:8px;overflow-x:auto;padding:10px;background:var(--surface);border-bottom:1px solid var(--line)}.status-saving{color:var(--warn)}.status-saved{color:var(--ok)}