:root{
  --gs-blue:#00569E; --gs-blue-dk:#013F74; --gs-orange:#FA6C00;
  --gs-black:#18211F; --gs-gray:#F2F2F2; --gs-white:#FFFFFF;
  --gs-font:'Inter',system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:var(--gs-font);color:var(--gs-black);background:var(--gs-gray);line-height:1.5}
a{color:var(--gs-blue);text-decoration:none}a:hover{text-decoration:underline}
.wrap{max-width:1100px;margin:0 auto;padding:0 22px}
header.top{background:#fff;border-bottom:1px solid #e5e7eb;position:sticky;top:0;z-index:30}
.bar{display:flex;align-items:center;justify-content:space-between;height:62px;gap:18px}
.logo{font-weight:800;font-size:21px;letter-spacing:-.02em;color:var(--gs-blue);white-space:nowrap}
.logo .tm{font-size:9px;vertical-align:super;font-weight:600}
.logo .sub{font-size:11px;font-weight:600;letter-spacing:.16em;text-transform:uppercase;color:var(--gs-black);opacity:.65;margin-left:6px}
nav.menu{display:flex;gap:20px;align-items:center;font-weight:500;font-size:15px;flex:1}
nav.menu a{color:var(--gs-black)}
.searchbar{flex:1;max-width:380px;display:flex}
.searchbar input{flex:1;padding:9px 14px;border:1.5px solid #d7dde3;border-radius:999px 0 0 999px;font-size:14px;font-family:inherit;outline:none}
.searchbar input:focus{border-color:var(--gs-blue)}
.searchbar button{border:none;background:var(--gs-blue);color:#fff;padding:0 18px;border-radius:0 999px 999px 0;font-weight:600;cursor:pointer}
.who{font-size:13px;color:#64748b;white-space:nowrap}
.role-chip{display:inline-block;background:var(--gs-gray);border-radius:999px;padding:1px 9px;font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.04em;color:var(--gs-blue)}
.btn{display:inline-flex;align-items:center;gap:7px;border:none;border-radius:999px;font-weight:600;font-size:14px;padding:10px 18px;cursor:pointer;font-family:inherit}
.btn-orange{background:var(--gs-orange);color:#fff}.btn-orange:hover{filter:brightness(.94);text-decoration:none}
.btn-blue{background:var(--gs-blue);color:#fff}.btn-blue:hover{filter:brightness(.94);text-decoration:none}
.btn-ghost{background:#fff;border:1.5px solid var(--gs-blue);color:var(--gs-blue)}
.btn-sm{padding:6px 12px;font-size:13px}
.btn-danger{background:#fff;border:1.5px solid #d33;color:#c00}
main{padding:28px 0 60px}
h1.page{font-size:27px;font-weight:800;letter-spacing:-.02em;margin-bottom:4px}
.eyebrow{color:var(--gs-orange);font-weight:700;font-size:12px;letter-spacing:.1em;text-transform:uppercase}
.muted{color:#64748b;font-size:14px}
.crumbs{font-size:13px;color:#64748b;margin-bottom:14px}
.crumbs a{color:#64748b}
.card{background:#fff;border:1px solid #e5e7eb;border-radius:14px;padding:18px}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:16px;margin-top:16px}
.vcard{background:#fff;border:1px solid #e5e7eb;border-radius:14px;overflow:hidden;display:block;color:inherit}
.vcard:hover{box-shadow:0 8px 22px rgba(0,86,158,.10);text-decoration:none}
.vthumb{aspect-ratio:16/9;background:linear-gradient(135deg,var(--gs-blue),var(--gs-blue-dk));display:grid;place-items:center;position:relative}
.vthumb .play{width:46px;height:46px;border-radius:50%;background:rgba(255,255,255,.92);display:grid;place-items:center}
.vthumb .play:after{content:"";border-left:14px solid var(--gs-orange);border-top:9px solid transparent;border-bottom:9px solid transparent;margin-left:3px}
.vbody{padding:12px 14px 15px}
.vbody h3{font-size:15px;font-weight:700;letter-spacing:-.01em;margin-bottom:5px;color:var(--gs-black)}
.vmeta{font-size:12px;color:#94a3b8;margin-top:6px}
.folders{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:12px;margin-top:8px}
.fcard{background:#fff;border:1px solid #e5e7eb;border-radius:12px;padding:15px 16px;display:flex;align-items:center;gap:10px;color:var(--gs-black)}
.fcard:hover{border-color:var(--gs-blue);text-decoration:none}
.fcard .ic{font-size:20px}
.section-title{display:flex;align-items:center;justify-content:space-between;margin:26px 0 6px}
.section-title h2{font-size:18px;font-weight:800;letter-spacing:-.01em}
form.stack{display:grid;gap:14px;max-width:560px}
label{font-weight:600;font-size:14px;display:block;margin-bottom:5px}
input[type=text],input[type=email],input[type=password],input[type=file],textarea,select{
  width:100%;padding:10px 12px;border:1.5px solid #d7dde3;border-radius:9px;font-size:15px;font-family:inherit;outline:none;background:#fff}
input:focus,textarea:focus,select:focus{border-color:var(--gs-blue)}
textarea{min-height:96px;resize:vertical}
.authwrap{min-height:80vh;display:grid;place-items:center}
.authcard{background:#fff;border-radius:16px;border:1px solid #e5e7eb;padding:34px;width:100%;max-width:420px;box-shadow:0 10px 40px rgba(0,0,0,.06)}
.authcard .logo{display:block;margin-bottom:6px}
table.tbl{width:100%;border-collapse:collapse;background:#fff;border-radius:12px;overflow:hidden;border:1px solid #e5e7eb;margin-top:12px}
table.tbl th{background:var(--gs-blue);color:#fff;text-align:left;font-size:12px;letter-spacing:.03em;padding:10px 12px}
table.tbl td{padding:10px 12px;border-top:1px solid #eef1f4;font-size:14px}
table.tbl tr:nth-child(even) td{background:#fafbfc}
.flash{padding:11px 15px;border-radius:10px;margin-bottom:16px;font-size:14px;font-weight:500}
.flash.ok{background:#e7f3ea;color:#1c6b34;border:1px solid #bfe0c8}
.flash.err{background:#fdeaea;color:#a3211b;border:1px solid #f3c4c1}
.flash.info{background:#e8f1f9;color:#0a4a86;border:1px solid #c2dcf0}
footer.foot{background:var(--gs-black);color:#9aa6b2;padding:26px 0;font-size:12.5px;margin-top:40px}
footer.foot a{color:#cbd5e1}
.tag{display:inline-block;background:var(--gs-gray);color:var(--gs-blue);border-radius:999px;padding:2px 10px;font-size:12px;font-weight:600;margin:2px 4px 2px 0}
.player{width:100%;border-radius:12px;background:#000;aspect-ratio:16/9}
.toolbar{display:flex;gap:8px;flex-wrap:wrap;align-items:center;margin-top:8px}
.copylink{font-size:13px}
@media(max-width:720px){nav.menu{display:none}.searchbar{max-width:none}}
.kb-body h2,.kb-body h3,.kb-body h4,.kb-body h5{margin:14px 0 6px;color:var(--gs-blue);font-weight:700;line-height:1.2}
.kb-body h2{font-size:20px}.kb-body h3{font-size:17px}.kb-body h4{font-size:15px}
.kb-body p{margin:8px 0}
.kb-body ul,.kb-body ol{margin:8px 0 8px 22px}
.kb-body li{margin:3px 0}
.kb-body a{color:var(--gs-blue);text-decoration:underline}
.kb-body strong{font-weight:700}

/* ---- connected folder tree ---- */
.treewrap{margin-top:12px}
ul.ftree{list-style:none;margin:0;padding-left:22px}
ul.ftree ul.ftree{padding-left:24px}
.ftree li{position:relative;padding:5px 0 5px 20px}
.ftree li::before{content:"";position:absolute;top:0;bottom:0;left:0;border-left:2px solid #cdd6df}
.ftree li:last-child::before{height:18px}
.ftree li::after{content:"";position:absolute;top:18px;left:0;width:16px;border-top:2px solid #cdd6df}
.treewrap > ul.ftree{padding-left:4px}
.treewrap > ul.ftree > li::before,.treewrap > ul.ftree > li::after{display:none}
.fnode{display:inline-flex;align-items:center;gap:8px;flex-wrap:wrap;background:#fff;border:1px solid #e5e7eb;border-radius:9px;padding:7px 12px}
.fnode a{color:var(--gs-black);font-weight:600}
.fnode a:hover{color:var(--gs-blue);text-decoration:none}
.fctrls{display:inline-flex;gap:8px;align-items:center;flex-wrap:wrap}
.fctrls form.inline{display:inline-flex;gap:5px;align-items:center;margin:0}
.fctrls input[name=name]{padding:5px 8px;font-size:13px;width:160px}
.fctrls select{padding:5px 8px;font-size:13px;max-width:200px}
.admin-tree .fnode{background:var(--gs-gray)}

/* ---- custom video player ---- */
.vp{position:relative;background:#000;border-radius:12px;overflow:hidden;max-width:900px;outline:none}
.vp video{display:block;width:100%;aspect-ratio:16/9;background:#000}
.vp-big{position:absolute;inset:0;margin:auto;width:76px;height:76px;border:none;border-radius:50%;background:rgba(0,0,0,.55);color:#fff;font-size:28px;cursor:pointer;display:flex;align-items:center;justify-content:center}
.vp-big:hover{background:rgba(250,108,0,.85)}
.vp-bar{position:absolute;left:0;right:0;bottom:0;padding:6px 12px 9px;background:linear-gradient(transparent,rgba(0,0,0,.75));opacity:0;transition:opacity .2s}
.vp:hover .vp-bar,.vp:focus-within .vp-bar,.vp.paused .vp-bar{opacity:1}
.vp-seek{width:100%;height:5px;accent-color:var(--gs-orange);cursor:pointer}
.vp-row{display:flex;align-items:center;gap:8px;color:#fff;margin-top:4px}
.vp-btn{background:transparent;border:none;color:#fff;font-size:14px;cursor:pointer;padding:4px 7px;border-radius:6px;line-height:1}
.vp-btn:hover{background:rgba(255,255,255,.18)}
.vp-time{font-size:12.5px;font-variant-numeric:tabular-nums;white-space:nowrap}
.vp-spacer{flex:1}
.vp-vol{width:76px;accent-color:#fff}
.vp-rate{background:rgba(255,255,255,.14);color:#fff;border:none;border-radius:6px;padding:3px 4px;font-size:12px}