:root{
  --bg:#f4f7fb;--panel:#fff;--text:#18212f;--muted:#6c7788;--line:#e4e9f1;
  --nav:#111827;--nav2:#202b3c;--accent:#355cff;--accent2:#eef2ff;
  --green:#168553;--greenbg:#eaf7f0;--yellow:#aa6700;--yellowbg:#fff4df;
  --red:#c23838;--redbg:#fdecec;--blue:#2f70c9;--bluebg:#eaf3ff;
  --shadow:0 8px 25px rgba(31,41,55,.07);--radius:15px
}
*{box-sizing:border-box}html,body{margin:0;min-height:100%;font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;background:var(--bg);color:var(--text)}
button,input,select,textarea{font:inherit}.hidden{display:none!important}.screen{min-height:100vh;background:linear-gradient(145deg,#f5f7fb,#edf2ff)}.center{display:grid;place-items:center;padding:24px}
.loading-card,.auth-card,.setup-card{background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:0 22px 65px rgba(31,41,55,.12)}
.loading-card{padding:34px;text-align:center;min-width:300px}.loading-card h2{margin:12px 0 6px}.loading-card p{color:var(--muted);margin:0}
.logo{width:44px;height:44px;border-radius:13px;background:linear-gradient(135deg,#6f89ff,#345cff);color:white;display:grid;place-items:center;font-weight:900;font-size:20px;margin:auto}.small-logo{width:34px;height:34px;border-radius:10px;margin:0}
.auth-card{width:min(440px,95vw);padding:26px}.auth-brand{display:flex;gap:13px;align-items:center;margin-bottom:22px}.auth-brand .logo{margin:0}.auth-brand h1{margin:0;font-size:23px}.auth-brand p{margin:3px 0 0;color:var(--muted);font-size:12px}
.auth-tabs{display:flex;background:#f2f4f8;border-radius:10px;padding:4px;margin-bottom:16px}.auth-tab{flex:1;border:0;background:transparent;padding:8px;border-radius:8px;cursor:pointer;color:var(--muted)}.auth-tab.active{background:white;color:var(--text);box-shadow:0 2px 7px rgba(0,0,0,.05);font-weight:700}
.auth-form,.panel{display:flex;flex-direction:column;gap:12px}label{display:flex;flex-direction:column;gap:6px;color:var(--muted);font-size:12px}input,select,textarea{width:100%;border:1px solid var(--line);border-radius:9px;background:white;color:var(--text);padding:9px 10px;outline:none}input:focus,select:focus,textarea:focus{border-color:#9bafff;box-shadow:0 0 0 3px rgba(53,92,255,.08)}textarea{min-height:92px;resize:vertical}
.btn{border:0;background:#edf1f6;color:#273347;border-radius:9px;padding:9px 13px;cursor:pointer}.btn:hover{filter:brightness(.98)}.btn.primary{background:var(--accent);color:white}.btn.ghost{background:white;border:1px solid var(--line)}.btn.danger{background:var(--redbg);color:var(--red)}.wide{width:100%}.hint{font-size:11px;color:var(--muted);line-height:1.55;margin:0}.form-msg{font-size:12px;color:var(--red);margin-top:10px;min-height:17px}.link-btn{border:0;background:transparent;color:var(--accent);cursor:pointer;margin:18px auto 0;display:block}
.setup-card{width:min(850px,96vw);padding:26px}.setup-grid{display:grid;grid-template-columns:1fr 1fr;gap:15px}.panel{border:1px solid var(--line);border-radius:14px;padding:18px}.panel h3{margin:0 0 4px}
.app{display:grid;grid-template-columns:235px 1fr;min-height:100vh}.sidebar{background:var(--nav);color:#d7dfec;padding:20px 15px;position:sticky;top:0;height:100vh}.brand{display:flex;gap:10px;align-items:center;padding:3px 8px 22px}.brand strong{display:block;color:white;font-size:18px}.brand span{display:block;color:#8d99ac;font-size:10px;margin-top:2px}
#nav{display:flex;flex-direction:column;gap:4px}.nav-item{border:0;background:transparent;color:#b9c2d2;text-align:left;padding:11px 12px;border-radius:10px;cursor:pointer}.nav-item.active,.nav-item:hover{background:var(--nav2);color:white}
.sidebar-foot{position:absolute;left:15px;right:15px;bottom:16px;border-top:1px solid #2c3647;padding:12px 8px}.workspace-name{font-size:12px;color:white;font-weight:700}.me-label{font-size:10px;color:#8d99ac;margin-top:4px}
.main{min-width:0}.topbar{height:72px;background:rgba(255,255,255,.94);backdrop-filter:blur(8px);border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 24px;position:sticky;top:0;z-index:10}.topbar h1{font-size:19px;margin:0}.sync{font-size:10px;color:var(--green);margin-top:3px}.top-actions{display:flex;gap:8px}
.content{padding:22px 24px 40px;max-width:1500px;margin:auto}.page{display:none}.page.active{display:block}.hero{display:flex;justify-content:space-between;gap:16px;align-items:flex-start;margin-bottom:17px}.hero h2{margin:0 0 5px;font-size:26px}.hero p{margin:0;color:var(--muted);font-size:13px}
.grid{display:grid;gap:15px}.stats{grid-template-columns:repeat(5,1fr)}.two{grid-template-columns:1.25fr .75fr}.three{grid-template-columns:repeat(3,1fr)}.four{grid-template-columns:repeat(4,1fr)}
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}.section{padding:17px}.stat{padding:16px}.stat .k{font-size:11px;color:var(--muted)}.stat .v{font-size:27px;font-weight:800;margin-top:5px}.stat .s{font-size:10px;color:var(--muted);margin-top:3px}
h3{font-size:15px;margin:0 0 13px}table{width:100%;border-collapse:collapse}th,td{padding:10px 9px;border-bottom:1px solid var(--line);font-size:12px;text-align:left;vertical-align:middle}th{font-size:10px;color:var(--muted);background:#fbfcfe}.tag{display:inline-flex;align-items:center;border-radius:999px;padding:4px 8px;font-size:10px;font-weight:700}.green{background:var(--greenbg);color:var(--green)}.yellow{background:var(--yellowbg);color:var(--yellow)}.red{background:var(--redbg);color:var(--red)}.blue{background:var(--bluebg);color:var(--blue)}.gray{background:#edf0f4;color:#687386}
.list{display:flex;flex-direction:column;gap:9px}.item,.project-card,.task-card{border:1px solid var(--line);border-radius:12px;background:white;padding:13px}.item-head,.project-head,.split{display:flex;justify-content:space-between;gap:10px;align-items:flex-start}.item-title,.project-title{font-size:13px;font-weight:800}.meta{font-size:10px;color:var(--muted);line-height:1.6;margin-top:5px}.bodytext{font-size:12px;line-height:1.7;margin-top:8px;white-space:pre-wrap}.project-card{cursor:pointer;transition:.15s}.project-card:hover{transform:translateY(-2px);box-shadow:0 12px 30px rgba(31,41,55,.09)}.project-goal{font-size:11px;color:var(--muted);line-height:1.6;margin:8px 0 11px}
.row-actions{display:flex;gap:6px;flex-wrap:wrap;margin-top:10px}.mini{border:1px solid var(--line);background:white;border-radius:7px;padding:5px 8px;font-size:10px;cursor:pointer}.mini:hover{background:#f7f9fc}.mini.primary{background:var(--accent);color:white;border-color:var(--accent)}
.empty{border:1px dashed #ccd4df;background:#fbfcfe;border-radius:12px;padding:25px;text-align:center;color:var(--muted);font-size:12px}.empty strong{display:block;color:var(--text);margin-bottom:4px}
.notice{padding:13px 14px;background:#f3f6ff;border:1px solid #dbe4ff;color:#3c4d77;border-radius:11px;font-size:11px;line-height:1.65;margin-bottom:15px}
.board{display:grid;grid-template-columns:repeat(5,1fr);gap:10px}.board-col{background:#eef2f7;border-radius:12px;padding:9px;min-height:230px}.board-col h4{font-size:11px;margin:0 0 8px;color:#536174}.task-card{padding:10px;margin-bottom:8px}.task-card .title{font-size:11px;font-weight:700}.task-card .meta{font-size:9px}
.progress{height:7px;background:#edf0f4;border-radius:999px;overflow:hidden;margin-top:7px}.progress i{display:block;height:100%;background:var(--accent);border-radius:999px}.materials{display:flex;flex-direction:column;gap:5px;margin-top:9px}.material{display:flex;flex-direction:row;align-items:center;gap:7px;font-size:11px;color:var(--text)}.material input{width:auto}
.comments{display:flex;flex-direction:column;gap:7px}.comment{background:#f8fafc;border:1px solid var(--line);padding:9px;border-radius:9px}.comment strong{font-size:11px}.comment .text{font-size:11px;line-height:1.55;margin-top:3px}
.files{display:flex;flex-direction:column;gap:6px;margin-top:8px}.file{display:flex;justify-content:space-between;gap:10px;align-items:center;background:#f8fafc;border:1px solid var(--line);border-radius:8px;padding:7px 8px}.file-name{font-size:10px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.file-meta{font-size:9px;color:var(--muted)}
.modal-wrap{position:fixed;inset:0;background:rgba(15,23,42,.45);z-index:30;display:grid;place-items:center;padding:20px}.modal{width:min(700px,96vw);max-height:92vh;overflow:auto;background:white;border-radius:18px;padding:21px;box-shadow:0 28px 90px rgba(0,0,0,.23)}.modal-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:15px}.modal-head h3{margin:0}.round-btn{border:0;background:#edf1f6;border-radius:50%;width:31px;height:31px;cursor:pointer}.modal-foot{display:flex;justify-content:space-between;gap:10px;align-items:center;margin-top:14px}.form2{display:grid;grid-template-columns:1fr 1fr;gap:11px}.field{margin-bottom:11px}.field label{display:block;margin-bottom:5px}
.toast{position:fixed;right:22px;bottom:22px;background:#111827;color:white;padding:10px 13px;border-radius:9px;font-size:11px;opacity:0;transform:translateY(8px);transition:.2s;z-index:50}.toast.show{opacity:1;transform:none}
@media(max-width:1150px){.stats{grid-template-columns:repeat(3,1fr)}.board{grid-template-columns:repeat(3,1fr)}.three,.four{grid-template-columns:repeat(2,1fr)}}
@media(max-width:800px){.app{grid-template-columns:1fr}.sidebar{display:none}.content{padding:15px}.topbar{padding:0 14px}.two,.three,.four,.stats,.setup-grid{grid-template-columns:1fr}.board{grid-template-columns:1fr}.hero{flex-direction:column}.top-actions .btn.ghost{display:none}.form2{grid-template-columns:1fr}}