:root{--nav:#1f3864;--accent:#2f5597;--bg:#f4f6fa;--ok:#1e7d34;--err:#b00020;--line:#d9dee7}
*{box-sizing:border-box}
body{margin:0;font-family:Arial,Helvetica,sans-serif;background:var(--bg);color:#1c1c1c}
.topbar{display:flex;align-items:center;gap:18px;background:var(--nav);color:#fff;padding:10px 18px;flex-wrap:wrap}
.brand{color:#fff;font-weight:bold;font-size:18px;text-decoration:none}
.topbar nav{display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin-left:auto}
.topbar nav a{color:#dce4f5;text-decoration:none;font-size:14px}
.topbar nav a:hover{color:#fff}
.who{font-size:13px;color:#9fb3d8}
.container{max-width:1040px;margin:22px auto;padding:0 16px}
.flash{padding:10px 14px;border-radius:6px;margin-bottom:16px;font-size:14px}
.flash.ok{background:#e4f3e7;color:var(--ok);border:1px solid #b6dcc0}
.flash.err{background:#fbe4e7;color:var(--err);border:1px solid #f0bcc4}
.card{background:#fff;border:1px solid var(--line);border-radius:10px;padding:22px;margin-bottom:18px}
.auth{max-width:420px;margin:40px auto}
h1{font-size:22px;margin:0 0 16px}
h2{font-size:17px;margin:0 0 12px;color:var(--nav)}
label{display:block;font-size:13px;font-weight:bold;margin:12px 0 4px}
input,select,textarea{width:100%;padding:9px 10px;border:1px solid var(--line);border-radius:6px;font-size:14px;font-family:inherit}
button,.btn{background:var(--accent);color:#fff;border:0;padding:10px 16px;border-radius:6px;font-size:14px;cursor:pointer;text-decoration:none;display:inline-block}
button:hover,.btn:hover{background:var(--nav)}
.btn.sm{padding:5px 10px;font-size:12px}
.btn.gray{background:#6b7280}
.btn.danger{background:var(--err)}
table{width:100%;border-collapse:collapse;font-size:14px}
th,td{text-align:left;padding:9px 10px;border-bottom:1px solid var(--line)}
th{background:#eef1f7;color:var(--nav)}
.code{font-family:Consolas,monospace;font-weight:bold;letter-spacing:.5px}
.muted{color:#6b7280;font-size:13px}
.row{display:flex;gap:16px;flex-wrap:wrap}
.row>div{flex:1;min-width:200px}
.tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:16px}
.tabs a{padding:7px 12px;border:1px solid var(--line);border-radius:6px;background:#fff;text-decoration:none;color:var(--nav);font-size:13px}
.tabs a.active{background:var(--nav);color:#fff}
.thumb{width:54px;height:54px;object-fit:cover;border-radius:6px;border:1px solid var(--line)}
video,canvas.snap{width:100%;max-width:360px;border-radius:8px;border:1px solid var(--line);background:#000}
.hint{font-size:12px;color:#6b7280;margin-top:4px}