:root{
  --ink:#0A2A43; --ink-deep:#061C2E; --signal:#E85A1C; --steel:#1F5F7A;
  --n900:#101820; --n700:#33414D; --n500:#6B7A88; --n300:#C7D0D8; --n100:#EEF2F5; --n50:#F7F9FB;
  --line:rgba(16,24,32,.12); --bg:#F4F6F8;
  --font:'HarmonyOS Sans SC','PingFang SC','Microsoft YaHei',system-ui,sans-serif;
}
*{box-sizing:border-box}
body{margin:0;font-family:var(--font);font-size:14px;line-height:1.65;color:var(--n900);background:var(--bg)}
h1,h2,h3,h4,h5{margin:0;font-weight:500;line-height:1.35}
p{margin:0}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font-family:inherit;font-size:inherit}
.hidden{display:none!important}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;padding:9px 16px;border:1px solid var(--n300);background:#fff;color:var(--n700);border-radius:6px;cursor:pointer;white-space:nowrap;transition:background .15s,border-color .15s}
.btn:hover{border-color:var(--n500)}
.btn.primary{background:var(--ink);border-color:var(--ink);color:#fff}
.btn.primary:hover{background:#123A56}
.btn.danger{color:#A32D2D;border-color:#E7C4C4}
.btn.danger:hover{background:#FCEBEB}
.btn.sm{padding:6px 11px;font-size:12.5px}
.btn.block{width:100%}
.btn:disabled{opacity:.5;cursor:not-allowed}
.link{background:none;border:0;color:var(--n500);cursor:pointer;padding:0;font-size:13px}
.link:hover{color:var(--ink)}

/* login */
.login{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px;background:var(--ink-deep)}
.login-panel{width:100%;max-width:400px;background:#fff;border-radius:14px;padding:36px}
.login-brand,.side-brand{display:flex;align-items:center;gap:12px}
.login-brand strong,.side-brand strong{display:block;font-size:16px;color:var(--ink)}
.login-brand small,.side-brand small{display:block;font-size:10px;letter-spacing:.14em;color:var(--n500)}
.mark{width:16px;height:16px;background:var(--signal);border-radius:3px;flex:none}
.login h1{font-size:24px;margin:30px 0 6px}
.login>p{font-size:13px;color:var(--n500);margin-bottom:26px}
.fld{margin-bottom:16px}
.fld label{display:block;font-size:12.5px;color:var(--n700);margin-bottom:6px}
.fld input,.fld select,.fld textarea,.inp{width:100%;border:1px solid var(--n300);border-radius:6px;padding:10px 12px;background:#fff;color:var(--n900);outline:none}
.fld input:focus,.fld select:focus,.fld textarea:focus,.inp:focus{border-color:var(--steel);box-shadow:0 0 0 3px rgba(31,95,122,.10)}
.login-msg{min-height:18px;font-size:12.5px;color:#A32D2D;margin-top:10px}
.login-hint{font-size:11.5px;color:var(--n500);margin-top:22px;padding-top:18px;border-top:1px solid var(--line);line-height:1.7}

/* app layout */
.app{display:grid;grid-template-columns:224px minmax(0,1fr);min-height:100vh}
.sidebar{background:var(--ink-deep);color:#C3D0DB;display:flex;flex-direction:column;position:sticky;top:0;height:100vh}
.side-brand{padding:22px 20px;border-bottom:1px solid rgba(255,255,255,.10)}
.side-brand strong{color:#fff}
.side-brand small{color:#7C93A7}
.side-nav{padding:14px 10px;overflow-y:auto;flex:1}
.side-nav button{display:flex;align-items:center;justify-content:space-between;width:100%;text-align:left;background:none;border:0;color:#9FB2C4;padding:9px 12px;border-radius:6px;cursor:pointer;font-size:13.5px;margin-bottom:2px}
.side-nav button:hover{background:rgba(255,255,255,.07);color:#fff}
.side-nav button.active{background:rgba(255,255,255,.11);color:#fff;font-weight:500}
.unread{width:7px;height:7px;border-radius:50%;background:var(--signal);display:inline-block}
.side-foot{padding:16px 20px;border-top:1px solid rgba(255,255,255,.10);display:flex;flex-direction:column;gap:10px;align-items:flex-start;font-size:12.5px}
.side-foot a:hover{color:#fff}
.side-foot .link{color:#9FB2C4}
.main{min-width:0}
.topbar{height:74px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:20px;padding:0 30px;position:sticky;top:0;z-index:20}
.topbar h1{font-size:18px}
.topbar p{font-size:12px;color:var(--n500)}
.top-actions{display:flex;align-items:center;gap:12px}
.pill{background:var(--n100);color:var(--n700);font-size:12px;padding:5px 10px;border-radius:20px}
.dirty-tag{font-size:12px;color:var(--signal);background:#FFF1E9;padding:5px 10px;border-radius:20px}
.content{padding:28px 30px 60px;max-width:1180px}

/* panels */
.panel{background:#fff;border:1px solid var(--line);border-radius:10px;padding:22px;margin-bottom:18px}
.panel-head{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-bottom:18px;flex-wrap:wrap}
.panel-head h2{font-size:15px}
.panel-head p{font-size:12px;color:var(--n500);margin-top:3px}
.panel-note{font-size:12px;color:var(--n500);line-height:1.8}
.grid2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.grid3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.grid4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}

.metric{background:#fff;border:1px solid var(--line);border-radius:10px;padding:18px}
.metric span{font-size:12px;color:var(--n500)}
.metric b{display:block;font-size:28px;font-weight:500;font-variant-numeric:tabular-nums;margin-top:6px;color:var(--ink)}
.metric em{font-style:normal;font-size:11.5px;color:var(--n500)}

/* forms */
.fields{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.field{display:flex;flex-direction:column;min-width:0}
.field.full{grid-column:1 / -1}
.field>label{font-size:12.5px;color:var(--n700);margin-bottom:6px}
.field>label i{font-style:normal;color:var(--n500);font-size:11px;margin-left:6px}
.field input,.field textarea,.field select{border:1px solid var(--n300);border-radius:6px;padding:9px 11px;background:#fff;outline:none;width:100%;color:var(--n900)}
.field input:focus,.field textarea:focus,.field select:focus{border-color:var(--steel);box-shadow:0 0 0 3px rgba(31,95,122,.10)}
.field textarea{resize:vertical;min-height:76px;line-height:1.7}
.field .hint{font-size:11px;color:var(--n500);margin-top:5px}

.item-card{border:1px solid var(--line);border-radius:9px;padding:18px;margin-bottom:14px;background:#fff}
.item-head{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:14px}
.item-head b{font-size:14px;font-weight:500}
.item-head span{font-size:11.5px;color:var(--n500)}
.item-actions{display:flex;gap:7px}
.item-preview{display:flex;gap:14px;align-items:flex-start;margin-bottom:14px}
.item-preview img,.item-preview video{width:150px;height:90px;object-fit:cover;border-radius:6px;background:var(--n100);border:1px solid var(--line)}
.item-preview .url-text{font-size:11.5px;color:var(--n500);word-break:break-all;line-height:1.6}

/* tables */
.table-wrap{overflow-x:auto}
table.tbl{width:100%;border-collapse:collapse;font-size:13px}
table.tbl th{text-align:left;font-size:11.5px;color:var(--n500);font-weight:500;background:var(--n50);padding:11px 12px;border-bottom:1px solid var(--line);white-space:nowrap}
table.tbl td{padding:12px;border-bottom:1px solid var(--line);vertical-align:top}
table.tbl tr:last-child td{border-bottom:0}
table.tbl td b{font-weight:500}
.badge{display:inline-block;font-size:11px;padding:3px 8px;border-radius:20px;white-space:nowrap}
.badge.new{background:#FFF1E9;color:#9A3D0E}
.badge.contacted{background:#E6F1FB;color:#185FA5}
.badge.done{background:#E1F5EE;color:#0F6E56}
.muted{color:var(--n500);font-size:12px}
.toolbar{display:flex;justify-content:space-between;gap:12px;align-items:center;margin-bottom:16px;flex-wrap:wrap}
.toolbar .inp{width:240px}
.empty{text-align:center;padding:40px 20px;color:var(--n500);font-size:13px}

.quick-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px}
.quick{background:var(--n50);border:1px solid var(--line);border-radius:8px;padding:14px;cursor:pointer;text-align:left;font-size:13px;color:var(--n700)}
.quick:hover{border-color:var(--steel);background:#fff}

.settings-row{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:14px 0;border-bottom:1px solid var(--line)}
.settings-row:last-child{border-bottom:0}
.settings-row b{font-size:13.5px;font-weight:500}
.settings-row p{font-size:12px;color:var(--n500);margin-top:3px}
.toast{position:fixed;right:24px;bottom:24px;background:var(--ink);color:#fff;padding:12px 18px;border-radius:8px;font-size:13px;opacity:0;pointer-events:none;transform:translateY(10px);transition:opacity .2s,transform .2s;z-index:100}
.toast.show{opacity:1;transform:none}
.toast.error{background:#A32D2D}
.section-tip{background:#F0F5F9;border-left:3px solid var(--steel);padding:12px 16px;font-size:12.5px;color:var(--n700);line-height:1.8;margin-bottom:18px;border-radius:0 6px 6px 0}

@media(max-width:1000px){
  .app{grid-template-columns:1fr}
  .sidebar{position:static;height:auto}
  .side-nav{display:flex;overflow-x:auto;padding:8px;gap:4px}
  .side-nav button{width:auto;white-space:nowrap;margin:0}
  .side-foot{flex-direction:row;justify-content:space-between}
  .grid4,.quick-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media(max-width:700px){
  .topbar{padding:0 16px;height:auto;min-height:68px;flex-wrap:wrap}
  .content{padding:18px 16px 40px}
  .fields,.grid2,.grid3,.grid4,.quick-grid{grid-template-columns:1fr}
  .top-actions .pill{display:none}
}