*{box-sizing:border-box}body{margin:0;font:15px/1.45 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;background:#f3f5f9;color:#1d2433}
a{color:inherit;text-decoration:none}:root{--b:#0057b8;--b2:#e8f0fb}
.logo{font-weight:800;font-size:20px;color:var(--b)}.logo span{background:var(--b);color:#fff;border-radius:6px;padding:0 6px;font-size:14px;vertical-align:middle}
header{position:sticky;top:0;z-index:5;display:flex;gap:14px;align-items:center;background:#fff;padding:10px 18px;border-bottom:1px solid #e3e7ef}
.search{flex:1;max-width:520px}.search input,.login input{width:100%;padding:10px 14px;border:1px solid #d5dbe6;border-radius:10px;font-size:15px;background:#f7f9fc}
.langs{display:flex;gap:4px;margin-left:auto}.langs button{border:1px solid #d5dbe6;background:#fff;border-radius:8px;padding:5px 9px;cursor:pointer;font-weight:600;font-size:12px}.langs button.on{background:var(--b);color:#fff;border-color:var(--b)}
.burger{display:none;border:0;background:none;font-size:22px}
.layout{display:flex}nav{width:250px;flex:none;background:#fff;border-right:1px solid #e3e7ef;min-height:calc(100vh - 57px);padding:12px;position:sticky;top:57px;align-self:flex-start}
nav a{display:flex;justify-content:space-between;padding:9px 12px;border-radius:9px;margin:2px 0}nav a:hover{background:#f3f5f9}nav a.on{background:var(--b2);color:var(--b);font-weight:600}
nav small{color:#8a93a6}nav hr{border:0;border-top:1px solid #eef1f5}.cty{font-weight:700;padding:6px 12px 10px;display:flex;justify-content:space-between}
main{flex:1;padding:22px 28px;max-width:1100px;min-width:0}h1{margin:6px 0 14px;font-size:24px}.crumbs{color:#6b7488;font-size:13px}.crumbs a:hover{color:var(--b)}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(190px,1fr));gap:12px;margin-bottom:20px}
.folder{background:#fff;border:1px solid #e3e7ef;border-radius:14px;padding:16px;display:flex;flex-direction:column;gap:4px;transition:.15s}.folder:hover{border-color:var(--b);box-shadow:0 4px 14px #0057b81a}
.folder span{font-size:26px}.folder small{color:#8a93a6}
.chips{display:flex;gap:8px;flex-wrap:wrap;margin:6px 0 14px}.chips a{background:#fff;border:1px solid #d5dbe6;border-radius:20px;padding:6px 13px;font-size:14px}.chips a.on{background:var(--b);color:#fff;border-color:var(--b)}.chips small{opacity:.7}
.files{display:flex;flex-direction:column;gap:8px}.file{display:flex;align-items:center;background:#fff;border:1px solid #e3e7ef;border-radius:12px}.file:hover{border-color:var(--b)}
.fmain{flex:1;display:flex;gap:12px;align-items:center;padding:11px 14px;min-width:0}.fmain b{display:inline;overflow-wrap:anywhere}.fmain small{display:block;color:#8a93a6;font-size:12px}
.ic{width:40px;height:40px;flex:none;border-radius:10px;display:grid;place-items:center;font-size:20px}.t-pdf{background:#fde8e8}.t-presentation{background:#fff1dc}.t-article{background:#e5f6ec}.t-video{background:#ece8fd}
.new{background:#16a34a;color:#fff;font-style:normal;font-size:11px;border-radius:6px;padding:1px 6px;margin-left:8px;vertical-align:middle}
.star{border:0;background:none;font-size:22px;color:#b6bdcb;cursor:pointer;padding:0 14px}.star.on{color:#f5a700}
.primary{display:inline-block;background:var(--b);color:#fff;border:0;border-radius:10px;padding:10px 18px;font-weight:600;cursor:pointer;font-size:15px}
.vhead{display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap}.vhead div{display:flex;align-items:center}
.pdf{width:100%;height:75vh;border:1px solid #e3e7ef;border-radius:12px;background:#fff}.player{width:100%;aspect-ratio:16/9;border:0;border-radius:12px;background:#000}
article{background:#fff;border:1px solid #e3e7ef;border-radius:12px;padding:20px 26px}.desc{color:#4b556a}.tags{color:var(--b);margin-bottom:10px}.empty{color:#8a93a6;padding:30px 0}
.center{min-height:100vh;display:grid;place-items:center;padding:16px;background:linear-gradient(135deg,#0057b8,#2b8ae6)}
.login{background:#fff;border-radius:18px;padding:30px;width:100%;max-width:400px;display:flex;flex-direction:column;gap:12px;box-shadow:0 20px 50px #0003}.login h2{margin:4px 0}
.countries{display:grid;grid-template-columns:1fr 1fr;gap:10px}.cbtn{border:1px solid #d5dbe6;border-radius:12px;padding:14px;display:flex;flex-direction:column;align-items:center;gap:4px;font-weight:600}.cbtn:hover{border-color:var(--b);background:var(--b2)}.flag{font-size:30px}
.err{color:#d02a2a;min-height:1em}.login .langs{margin:0}
@media(max-width:760px){.burger{display:block}header{flex-wrap:wrap;padding:8px 12px}.search{order:3;flex-basis:100%;max-width:none}
 nav{position:fixed;left:-270px;top:0;bottom:0;z-index:9;transition:.2s;box-shadow:0 0 30px #0003;overflow:auto}body.nav nav{left:0}main{padding:14px}h1{font-size:20px}.pdf{height:65vh}}