:root{--navy:#0d2347;--navy2:#132f5e;--blue:#2563eb;--blue2:#4f8cff;--ink:#14213d;--muted:#70809d;--line:#e6ebf3;--bg:#f4f7fc;--white:#fff;--green:#12a56a;--orange:#f59e0b;--red:#e5484d;--shadow:0 18px 50px rgba(31,55,95,.12);font-family:Inter,"PingFang SC","Microsoft YaHei",system-ui,sans-serif;color:var(--ink);font-size:16px}*{box-sizing:border-box}body{margin:0;background:var(--bg)}button,input,select,textarea{font:inherit}button{cursor:pointer}.hidden{display:none!important}.login-screen{min-height:100vh;display:grid;grid-template-columns:minmax(460px,1.15fr) minmax(420px,.85fr);background:#fff}.login-art{position:relative;overflow:hidden;padding:48px 64px;color:#fff;background:radial-gradient(circle at 72% 34%,#285aa7 0,transparent 34%),linear-gradient(135deg,#091e3f,#10346a 62%,#1659a7)}.brand-lockup,.sidebar-brand{display:flex;gap:13px;align-items:center}.brand-icon{width:38px;height:38px;border-radius:12px;display:grid;place-items:center;background:linear-gradient(135deg,#73a9ff,#2865e9);box-shadow:0 8px 24px rgba(38,101,233,.3);color:#fff}.brand-lockup strong,.sidebar-brand strong{display:block;font-size:1.12rem}.brand-lockup small,.sidebar-brand small{display:block;opacity:.72;margin-top:2px}.login-copy{position:relative;z-index:2;margin-top:25vh;max-width:650px}.eyebrow{display:inline-block;font-size:.75rem;letter-spacing:.14em;text-transform:uppercase;color:#aecdff;font-weight:700}.eyebrow.blue{color:var(--blue)}.login-copy h1{font-size:clamp(2.6rem,4.4vw,4.7rem);line-height:1.08;margin:18px 0}.login-copy p{font-size:1.08rem;color:#c7d9f5}.orb{position:absolute;border-radius:50%;filter:blur(1px)}.orb-a{width:330px;height:330px;right:-100px;top:-80px;background:rgba(91,154,255,.18)}.orb-b{width:230px;height:230px;left:15%;bottom:-110px;background:rgba(68,194,255,.16)}.grid-lines{position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);background-size:44px 44px;mask-image:linear-gradient(transparent,#000 35%,#000)}.login-panel{display:grid;place-items:center;padding:48px}.login-card{width:min(410px,100%)}.login-card h2{font-size:2rem;margin:12px 0 6px}.muted{color:var(--muted)}label{display:block;font-size:.88rem;font-weight:650;margin:22px 0 7px}input,select,textarea{width:100%;border:1px solid #dce3ef;border-radius:10px;padding:12px 14px;background:#fff;color:var(--ink);outline:none}input:focus,select:focus,textarea:focus{border-color:#6b9cff;box-shadow:0 0 0 3px rgba(37,99,235,.1)}textarea{min-height:92px;resize:vertical}.primary,.secondary{border:0;border-radius:9px;padding:11px 17px;font-weight:650}.primary{background:linear-gradient(135deg,#3476ee,#1e5bd7);color:#fff;box-shadow:0 7px 16px rgba(37,99,235,.2)}.secondary{background:#f4f6fa;color:#334563;border:1px solid #dde4ef}.wide{width:100%;margin-top:15px}.demo-link{display:block;text-align:center;color:var(--blue);text-decoration:none;margin-top:20px;font-size:.9rem}.form-error{min-height:20px;color:var(--red);font-size:.85rem;margin:10px 0}.mobile-logo{display:none}.workspace{min-height:100vh;display:grid;grid-template-columns:248px 1fr}.sidebar{position:fixed;inset:0 auto 0 0;width:248px;background:linear-gradient(180deg,var(--navy),#091b38);color:#fff;padding:24px 18px;display:flex;flex-direction:column;z-index:10}.sidebar-brand{padding:2px 8px 26px}.sidebar nav{display:grid;gap:6px}.sidebar nav button{display:flex;align-items:center;gap:13px;border:0;background:transparent;color:#bdcbe0;padding:12px 14px;border-radius:9px;text-align:left}.sidebar nav button:hover,.sidebar nav button.active{background:linear-gradient(90deg,#244f91,#245aab);color:#fff}.sidebar nav button span{font-size:1.15rem;width:20px}.sidebar-note{margin-top:auto;border:1px solid rgba(255,255,255,.09);background:rgba(255,255,255,.05);border-radius:10px;padding:12px 14px;display:grid;gap:3px}.sidebar-note strong{font-size:.82rem}.sidebar-note span{font-size:.72rem;color:#98adca}.account{display:grid;grid-template-columns:38px 1fr 30px;align-items:center;gap:9px;margin-top:12px;padding:14px 5px 0;border-top:1px solid rgba(255,255,255,.1)}.avatar{width:36px;height:36px;border-radius:11px;background:#e8f0ff;color:#174d9d;display:grid;place-items:center;font-weight:800}.account strong,.account small{display:block}.account strong{font-size:.82rem}.account small{font-size:.7rem;color:#8fa6c8;margin-top:3px}.account button{border:0;background:transparent;color:#9db0cd;font-size:1.1rem}.main-shell{grid-column:2;min-width:0}.main-shell>header{height:74px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;padding:0 32px;position:sticky;top:0;z-index:5}.main-shell header h1{font-size:1.06rem;margin:0}.main-shell header p{font-size:.75rem;color:var(--muted);margin:4px 0 0}.header-actions{margin-left:auto;display:flex;align-items:center;gap:8px;color:var(--muted);font-size:.78rem}.online-dot{width:7px;height:7px;background:var(--green);border-radius:50%}.icon-btn{border:1px solid var(--line);background:#fff;color:#53657f;border-radius:8px;width:34px;height:34px;padding:0}.icon-btn.danger{color:var(--red)}#mobile-menu{display:none;margin-right:12px}.content{padding:28px 32px 48px;max-width:1560px;margin:auto}.view{display:none}.view.active{display:block}.hero-card{position:relative;overflow:hidden;border-radius:16px;padding:32px 36px;background:linear-gradient(115deg,#0e2f66,#174f9c 72%,#3278e4);color:#fff;box-shadow:var(--shadow)}.hero-card:after{content:"";position:absolute;width:280px;height:280px;border:1px solid rgba(255,255,255,.12);border-radius:50%;right:-40px;top:-120px;box-shadow:0 0 0 42px rgba(255,255,255,.035),0 0 0 84px rgba(255,255,255,.025)}.hero-card h2{font-size:1.75rem;margin:9px 0}.hero-card p{color:#caddf8;margin:0}.ask-box{position:relative;z-index:1;display:flex;max-width:700px;margin-top:25px;background:#fff;border-radius:11px;padding:6px}.ask-box input{border:0;box-shadow:none}.ask-box button{border:0;background:#dfe8f6;color:#8090a7;border-radius:8px;padding:0 18px}.summary-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin:20px 0}.stat-card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:20px;display:grid;grid-template-columns:1fr auto;align-items:center}.stat-card small{color:var(--muted)}.stat-card strong{display:block;font-size:1.7rem;margin-top:7px}.stat-icon{width:42px;height:42px;border-radius:11px;display:grid;place-items:center;background:#eef4ff;color:var(--blue);font-weight:800}.two-col{display:grid;grid-template-columns:1.25fr .75fr;gap:18px}.panel{background:#fff;border:1px solid var(--line);border-radius:12px;padding:21px}.panel-head,.page-toolbar{display:flex;align-items:center;justify-content:space-between;gap:16px}.panel-head h3,.page-toolbar h2{margin:0;font-size:1rem}.page-toolbar h2{font-size:1.35rem}.panel-head p,.page-toolbar p{margin:5px 0 0;color:var(--muted);font-size:.78rem}.page-toolbar{margin-bottom:18px}.text-btn{border:0;background:transparent;color:var(--blue);font-size:.82rem}.activity-list{margin-top:12px}.activity{display:grid;grid-template-columns:9px 1fr auto;gap:12px;align-items:center;padding:13px 2px;border-top:1px solid #eef1f6}.activity:first-child{border-top:0}.activity-dot{width:8px;height:8px;border-radius:50%;background:var(--blue)}.activity strong{display:block;font-size:.88rem}.activity small{color:var(--muted)}.pill{display:inline-flex;align-items:center;border-radius:99px;padding:5px 9px;background:#edf4ff;color:#2765cf;font-size:.72rem;white-space:nowrap}.kb-overview{padding-top:14px}.kb-meter{height:8px;border-radius:99px;background:#edf1f7;overflow:hidden;margin:14px 0 20px}.kb-meter span{display:block;height:100%;background:linear-gradient(90deg,#3f7df0,#67a3ff);border-radius:inherit}.metric-row{display:flex;justify-content:space-between;padding:10px 0;border-top:1px solid #eef1f6;font-size:.84rem}.metric-row span{color:var(--muted)}.toolbar-actions{display:flex;gap:10px}.tabs{display:flex;gap:8px;border-bottom:1px solid var(--line);margin:-3px 0 12px}.tabs button{border:0;background:transparent;color:var(--muted);padding:12px 14px;border-bottom:2px solid transparent}.tabs button.active{color:var(--blue);border-color:var(--blue);font-weight:650}.table-wrap{overflow:auto}table{width:100%;border-collapse:collapse;font-size:.82rem}th{text-align:left;color:#75839a;font-weight:600;background:#f8fafd;padding:12px}td{padding:14px 12px;border-top:1px solid #edf0f5;vertical-align:middle}td strong{display:block}.progress{display:flex;align-items:center;gap:8px;min-width:110px}.progress-bar{height:6px;flex:1;background:#e9edf4;border-radius:99px;overflow:hidden}.progress-bar span{display:block;height:100%;background:var(--blue)}.row-actions{display:flex;gap:6px}.row-actions button{border:0;background:#eef4ff;color:#2862c5;border-radius:6px;padding:6px 8px}.row-actions .delete{background:#fff0f0;color:var(--red)}.knowledge-layout{display:grid;grid-template-columns:260px 1fr;gap:18px;min-height:570px}.folder-panel{background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px}.folder-title{font-size:.82rem;font-weight:700;padding:8px 9px 13px;color:#52627c}.folder-title span{float:right;color:var(--muted)}.folder-item{display:flex;align-items:center;gap:8px;width:100%;border:0;background:transparent;padding:10px;border-radius:8px;text-align:left;color:#53617a;font-size:.83rem}.folder-item:hover,.folder-item.active{background:#edf4ff;color:#1f5dc9}.folder-item .count{margin-left:auto;color:#8b99ad;font-size:.7rem}.folder-children{padding-left:16px}.files-panel{min-width:0}.folder-actions{display:flex;gap:6px}.file-list{margin-top:14px}.file-row{display:grid;grid-template-columns:42px 1fr 90px 120px 34px;gap:12px;align-items:center;border-top:1px solid #edf0f5;padding:13px 4px}.file-icon{width:38px;height:38px;border-radius:9px;background:#eef4ff;color:#2764d0;display:grid;place-items:center;font-size:.68rem;font-weight:800}.file-name{min-width:0}.file-name strong{font-size:.85rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;display:block}.file-name small,.file-row>small{color:var(--muted)}.file-row a{text-decoration:none;color:var(--blue)}.empty{padding:60px 20px;text-align:center;color:var(--muted)}.empty-icon{font-size:2rem;opacity:.5;margin-bottom:9px}.modal{position:fixed;inset:0;z-index:50;display:grid;place-items:center;padding:24px}.modal-backdrop{position:absolute;inset:0;background:rgba(5,17,39,.52);backdrop-filter:blur(2px)}.modal-card{position:relative;width:min(560px,100%);max-height:90vh;overflow:auto;background:#fff;border-radius:14px;box-shadow:0 30px 90px rgba(0,0,0,.25);padding:22px}.modal-head{display:flex;justify-content:space-between;align-items:center}.modal-head h3{margin:0}.modal-fields-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 14px}.modal-fields-grid .full{grid-column:1/-1}.modal-actions{display:flex;justify-content:flex-end;gap:9px;margin-top:16px}.toast{position:fixed;right:24px;bottom:24px;z-index:80;background:#132847;color:#fff;border-radius:9px;padding:12px 17px;box-shadow:var(--shadow);opacity:0;transform:translateY(12px);pointer-events:none;transition:.22s}.toast.show{opacity:1;transform:none}.toast.error{background:#a9343a}@media(max-width:1050px){.summary-grid{grid-template-columns:repeat(2,1fr)}.two-col{grid-template-columns:1fr}.login-screen{grid-template-columns:1fr}.login-art{display:none}.mobile-logo{display:flex;align-items:center;gap:10px;margin-bottom:48px}.login-panel{min-height:100vh}.knowledge-layout{grid-template-columns:220px 1fr}}@media(max-width:760px){.workspace{display:block}.sidebar{transform:translateX(-100%);transition:.2s}.sidebar.open{transform:none}.main-shell{margin:0}.main-shell>header{padding:0 16px}.content{padding:18px 14px 40px}#mobile-menu{display:block}.header-actions>span{display:none}.summary-grid{grid-template-columns:1fr 1fr;gap:10px}.stat-card{padding:15px}.stat-card strong{font-size:1.35rem}.hero-card{padding:24px 20px}.hero-card h2{font-size:1.4rem}.knowledge-layout{grid-template-columns:1fr}.folder-panel{max-height:240px;overflow:auto}.page-toolbar{align-items:flex-start}.toolbar-actions{flex-direction:column}.modal-fields-grid{grid-template-columns:1fr}.modal-fields-grid .full{grid-column:auto}.file-row{grid-template-columns:38px 1fr 34px}.file-row>small{display:none}.login-panel{padding:26px}.account{margin-top:12px}.sidebar-note{margin-top:auto}}@media(max-width:430px){.summary-grid{grid-template-columns:1fr}.page-toolbar{display:block}.toolbar-actions{flex-direction:row;margin-top:12px}.page-toolbar .primary,.page-toolbar .secondary{flex:1}.stat-icon{display:none}}