:root{
  --primary:#12396b; --primary-d:#0a2547; --cyan:#0aa8c2; --bg:#f5f7fa; --panel:#fff; --line:#e3e8ef;
  --text:#1f2937; --muted:#6b7280; --green:#15a05a; --red:#e0463e; --radius:12px;
  --shadow:0 1px 3px rgba(16,24,40,.08),0 1px 2px rgba(16,24,40,.06);
}
*{box-sizing:border-box}
body{margin:0;font-family:-apple-system,"Segoe UI",Roboto,"PingFang SC","Microsoft YaHei",sans-serif;background:var(--bg);color:var(--text);font-size:14px}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer}
/* layout */
#app{display:none}
body.app-ready #app{display:grid;grid-template-columns:240px 1fr;min-height:100vh}
.sidebar{background:#0a2547;color:#cdd6e3;padding:18px 14px;display:flex;flex-direction:column;position:sticky;top:0;height:100vh}
.logo{font-weight:800;font-size:22px;letter-spacing:2px;color:#fff}
.logo-sub{font-size:12px;color:#7e8aa0;margin:4px 0 18px}
.nav{display:flex;flex-direction:column;gap:4px;flex:1}
.nav-item{padding:10px 12px;border-radius:9px;font-size:14px;color:#cdd6e3;transition:.15s}
.nav-item:hover{background:#12396b;color:#fff}
.nav-item.active{background:var(--primary);color:#fff;font-weight:600}
.logout{margin-top:12px;background:#12396b;color:#cdd6e3;border:none;padding:10px;border-radius:9px}
.logout:hover{background:#1c4a82;color:#fff}
.main{padding:26px 32px;max-width:1280px}
.page-head{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:18px;flex-wrap:wrap;gap:12px}
.page-head h1{margin:0;font-size:22px}
.page-head p{margin:4px 0 0;color:var(--muted);font-size:13px}
.head-actions{display:flex;gap:8px}
/* buttons */
.btn,.btn-primary,.btn-sm{background:#eef2f7;border:1px solid var(--line);color:var(--text);padding:9px 16px;border-radius:9px;font-size:13px;transition:.15s}
.btn:hover{background:#e3e9f1}
.btn-primary{background:var(--primary);border-color:var(--primary);color:#fff;font-weight:600}
.btn-primary:hover{background:var(--primary-d)}
.btn-sm{padding:5px 10px;font-size:12px;border-radius:7px}
.btn-sm.danger,.danger{background:#fdecea;color:var(--red);border-color:#f7c9c5}
.btn-sm.danger:hover{background:#fbd9d6}
/* panels & cards */
.panel{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px;box-shadow:var(--shadow);margin-bottom:18px}
.panel h3{margin:0 0 14px;font-size:16px}
.panel h4{margin:14px 0 8px}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.stat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:18px}
.stat-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow);text-align:center}
.stat-ic{font-size:26px}
.stat-v{font-size:30px;font-weight:800;color:var(--primary);margin:6px 0 2px}
.stat-l{font-size:13px;color:var(--muted)}
.feat-list{margin:0 0 14px;padding-left:18px;line-height:1.9}
.quick{display:flex;gap:8px;flex-wrap:wrap}
/* bars */
.bar-row{display:flex;align-items:center;gap:10px;margin-bottom:10px}
.bar-label{width:210px;font-size:13px;color:var(--text)}
.bar-track{flex:1;background:#eef2f7;border-radius:6px;height:14px;overflow:hidden}
.bar-fill{display:block;height:100%;background:linear-gradient(90deg,#12396b,#0aa8c2)}
.bar-val{width:34px;text-align:right;font-weight:600;font-size:13px}
/* tables */
.tbl{width:100%;border-collapse:collapse;font-size:13px}
.tbl th,.tbl td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--line);vertical-align:middle}
.tbl th{color:var(--muted);font-weight:600;font-size:12px;text-transform:uppercase;letter-spacing:.3px}
.tbl tbody tr:hover{background:#f9fbfd}
.tbl.small{font-size:12px}
.tbl.small th,.tbl.small td{padding:7px 9px}
.tbl-wrap{overflow:auto;max-height:420px}
.thumb{width:46px;height:46px;object-fit:cover;border-radius:7px;border:1px solid var(--line);vertical-align:middle}
.row-actions{white-space:nowrap}
.row-actions .btn-sm{display:inline-block;vertical-align:middle;margin:0 4px}
.badge{display:inline-block;font-size:11px;padding:3px 9px;border-radius:20px;font-weight:600;vertical-align:middle}
.b-green{background:#e6f7ee;color:var(--green)}
.b-gray{background:#eef2f7;color:var(--muted)}
.muted{color:var(--muted)}
/* forms */
label{display:block;font-size:13px;font-weight:600;margin-bottom:12px;color:#374151}
label.chk{display:flex;align-items:center;gap:8px;font-weight:500}
label.chk input{width:auto}
input,select,textarea{width:100%;padding:9px 11px;border:1px solid var(--line);border-radius:8px;font-size:13px;font-family:inherit;margin-top:5px;background:#fff;color:var(--text)}
textarea{resize:vertical}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.checks{display:flex;gap:14px;align-items:center;margin:6px 0 14px;flex-wrap:wrap}
.checks span{font-weight:600;color:#374151}
.checks label{margin:0;font-weight:500;display:flex;gap:5px;align-items:center}
.spec-head,.img-head{font-weight:600;margin:14px 0 8px;display:flex;gap:10px;align-items:center}
.spec-row{display:grid;grid-template-columns:1fr 1fr auto;gap:8px;margin-bottom:8px}
.spec-row input{margin-top:0}
.img-prev{display:flex;flex-wrap:wrap;gap:10px;margin-top:6px}
.img-chip{position:relative;width:80px}
.img-chip img{width:80px;height:80px;object-fit:cover;border-radius:8px;border:1px solid var(--line)}
.img-chip .x2{position:absolute;top:-7px;right:-7px;background:var(--red);color:#fff;border:none;border-radius:50%;width:20px;height:20px;font-size:11px;line-height:1}
/* modal */
.modal-overlay{position:fixed;inset:0;background:rgba(15,27,45,.45);display:flex;align-items:flex-start;justify-content:center;padding:40px 16px;overflow:auto;z-index:50}
.modal{background:#fff;border-radius:14px;width:680px;max-width:100%;box-shadow:0 20px 50px rgba(0,0,0,.25)}
.modal.wide{width:900px}
.modal-head{display:flex;justify-content:space-between;align-items:center;padding:16px 20px;border-bottom:1px solid var(--line)}
.modal-head h3{margin:0;font-size:17px}
.modal-head .x{border:none;background:none;font-size:18px;color:var(--muted)}
.modal-body{padding:20px;max-height:68vh;overflow:auto}
.modal-foot{padding:14px 20px;border-top:1px solid var(--line);display:flex;justify-content:flex-end;gap:10px}
/* media */
.media-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:12px}
.media-cell{border:1px solid var(--line);border-radius:10px;overflow:hidden;background:#fff}
.media-cell img{width:100%;height:110px;object-fit:cover;display:block}
.media-cell.pick{cursor:pointer}
.media-cell.pick:hover{border-color:#0aa8c2;box-shadow:0 0 0 2px rgba(10,168,194,.28)}
.media-bar{display:flex;justify-content:space-between;align-items:center;padding:5px 7px;gap:6px}
.media-name{font-size:10px;color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
/* login */
.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#0a2547,#0aa8c2)}
.login-card{background:#fff;border-radius:16px;padding:34px 38px;width:360px;box-shadow:0 20px 50px rgba(0,0,0,.3)}
.login-logo{font-size:30px;font-weight:800;letter-spacing:3px;color:var(--primary);text-align:center}
.login-sub{text-align:center;color:var(--muted);font-size:13px;margin:6px 0 22px}
.login-card label{font-size:13px;color:#374151}
.login-card input{margin-bottom:14px}
.login-card button{width:100%;padding:11px;margin-top:6px}
.login-hint{text-align:center;font-size:12px;color:var(--muted);margin-top:12px}
/* rec card */
.rec-card{background:linear-gradient(135deg,#12396b,#0aa8c2);color:#fff;border-radius:12px;padding:18px;margin-bottom:14px}
.rec-big{font-size:30px;font-weight:800}
.rec-sub{font-size:13px;opacity:.9}
.chip{display:inline-block;background:#eef2f7;border:1px solid var(--line);border-radius:20px;padding:4px 12px;font-size:12px;margin:0 6px 6px 0}
/* ---- 启动更新 / 自动保存 ---- */
.upd-list{display:flex;flex-direction:column;gap:8px}
.upd-row{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:9px 12px;background:#f7f9fc;border:1px solid var(--line);border-radius:9px;font-size:14px}
.upd-row span{color:var(--muted)}
.upd-row b{font-weight:600;text-align:right}
.upd-on{color:var(--green)}
.upd-off{color:var(--red)}
.upd-actions{display:flex;flex-direction:column;gap:10px}
.upd-actions .btn,.upd-actions .btn-primary{text-align:center}
.upd-link{display:block;padding:9px 16px;line-height:1.5}
.upd-big{padding:15px 18px;font-size:16px}
.upd-tip{margin-top:14px;font-size:13px;line-height:1.8;color:var(--muted)}
.upd-settings{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.upd-sw{display:flex;flex-direction:column;gap:7px;padding:14px 16px;background:#f7f9fc;border:1px solid var(--line);border-radius:10px;font-size:14px}
.upd-sw-t{display:flex;align-items:center;gap:8px;font-weight:600}
.upd-sw-t input[type=checkbox]{width:auto;margin:0}
.upd-sw select{width:auto;padding:6px 10px;border:1px solid var(--line);border-radius:8px;background:#fff;font-size:13px}
.upd-sw small{color:#8b98a8;font-size:12px;line-height:1.6}
/* 弹窗里的自动保存提示 */
.autosave-hint{margin-left:auto;align-self:center;font-size:12px;color:var(--green);opacity:0;transition:opacity .25s}
.autosave-hint.show{opacity:1}
.autosave-hint.bad{color:var(--red)}
@media(max-width:860px){.upd-settings{grid-template-columns:1fr}}
/* toast */
#toasts{position:fixed;top:18px;right:18px;display:flex;flex-direction:column;gap:8px;z-index:99}
.toast{background:#0f1b2d;color:#fff;padding:11px 16px;border-radius:9px;font-size:13px;opacity:0;transform:translateY(-8px);transition:.3s;box-shadow:var(--shadow)}
.toast.show{opacity:1;transform:none}
.toast.err{background:var(--red)}
.loading,.error{padding:40px;text-align:center;color:var(--muted)}
@media(max-width:860px){.grid-2,.stat-grid{grid-template-columns:1fr}.form-grid{grid-template-columns:1fr}#app{grid-template-columns:1fr}.sidebar{position:static;height:auto}}