*{box-sizing:border-box}
body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;background:#f3f5f9;color:#1b2430}
.nav{background:#16233b;color:#fff;padding:12px 20px;display:flex;gap:16px;align-items:center;flex-wrap:wrap}
.nav b{font-size:17px;margin-right:auto}
.nav a{color:#cfd8ea;text-decoration:none;font-size:14px}
.nav a:hover{color:#fff}
.wrap{max-width:1000px;margin:24px auto;padding:0 16px}
.box{background:#fff;border-radius:12px;padding:22px;box-shadow:0 2px 12px rgba(20,30,60,.07);margin-bottom:20px}
h1,h2{margin:0 0 14px}
h1{font-size:22px}h2{font-size:18px}
label{display:block;font-size:13px;font-weight:600;margin:12px 0 5px}
input,select,textarea{width:100%;padding:10px 12px;border:1px solid #cfd6e4;border-radius:8px;font:inherit;background:#fff}
textarea{min-height:70px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:0 18px}
.btn{display:inline-block;background:#2756d6;color:#fff;border:0;padding:10px 18px;border-radius:8px;font:inherit;font-weight:600;cursor:pointer;text-decoration:none;font-size:14px}
.btn.light{background:#e6eaf3;color:#1b2430}
.btn.red{background:#d63b3b}
.btn.sm{padding:6px 12px;font-size:13px}
table{width:100%;border-collapse:collapse;font-size:14px}
th,td{text-align:left;padding:10px;border-bottom:1px solid #e8ecf3;vertical-align:middle}
th{background:#f6f8fc;font-size:12px;text-transform:uppercase;letter-spacing:.04em;color:#5a6a85}
.msg{padding:10px 14px;border-radius:8px;margin-bottom:14px;font-size:14px}
.msg.ok{background:#e4f7ec;color:#14673a}.msg.err{background:#fde8e8;color:#9b1c1c}
.login{max-width:400px;margin:70px auto}
.thumb{height:46px;border:1px solid #dde3ee;border-radius:6px;background:#fafbfd;padding:2px}
.stats{display:flex;gap:16px;flex-wrap:wrap}.stats div{flex:1;min-width:150px;background:#f6f8fc;border-radius:10px;padding:14px}
.stats b{font-size:26px;display:block}
.toolbar{max-width:900px;margin:16px auto;display:flex;gap:10px;flex-wrap:wrap;padding:0 12px}
.sheetwrap{overflow:auto;padding:10px;background:#cfd4de}
.sheetwrap .sheet{box-shadow:0 4px 20px rgba(0,0,0,.25)}
form.inline{display:inline}
small.hint{color:#6b7a96;font-weight:400}