*{box-sizing:border-box}body{margin:0;font:16px/1.5 system-ui,sans-serif;color:#1c2430;background:#f5f7fa}
header{display:flex;justify-content:space-between;align-items:center;padding:14px 24px;background:#0f2a4a}
header a,.link{color:#fff;text-decoration:none;margin-left:16px;background:none;border:0;font:inherit;cursor:pointer}
.brand{font-weight:700;font-size:1.2rem;margin:0}nav{display:flex;align-items:center}nav form{margin:0}
main{max-width:640px;margin:32px auto;padding:0 20px}footer{text-align:center;color:#6b7785;padding:32px}
.card{background:#fff;padding:24px;border-radius:10px;box-shadow:0 1px 4px #0001;display:grid;gap:14px}
label{display:grid;gap:4px;font-weight:600;font-size:.9rem}label.check{display:flex;gap:8px;font-weight:400}
input:not([type=checkbox]){padding:10px;border:1px solid #c5ced8;border-radius:6px;font:inherit}
.btn{background:#1d6fd6;color:#fff!important;padding:10px 18px;border:0;border-radius:6px;font:inherit;cursor:pointer;text-decoration:none;display:inline-block}
.error{background:#fde8e8;color:#9b1c1c;padding:10px 14px;border-radius:6px}.ok{background:#e3f6e8;color:#14612c;padding:10px 14px;border-radius:6px}
.hero{padding:40px 0}.hero h1{font-size:2rem}
.mod{margin-bottom:16px}.mod.locked{opacity:.55}.meta{color:#5b6775;font-size:.9rem;margin:0}.list{margin:0;padding-left:20px}
.lesson{display:block}.lesson h3{margin-top:1.2em}fieldset{border:0;padding:0;margin:0 0 14px}fieldset.card{padding:20px}
li.good{color:#14612c;font-weight:600}li.bad{color:#9b1c1c}main{max-width:760px}
.seatrow{display:grid;grid-template-columns:1fr 1fr 1.6fr;gap:8px;margin-bottom:8px}.link2{background:none;border:0;color:#1d6fd6;cursor:pointer;font:inherit;padding:0;text-align:left}
@media(max-width:600px){.seatrow{grid-template-columns:1fr}}
.suggest{list-style:none;margin:0;padding:0;background:#fff;border:1px solid #c5ced8;border-radius:6px;box-shadow:0 4px 12px #0002;position:absolute;z-index:5;top:100%;left:0;right:0}.suggest li{font-weight:400}label:has(.suggest){position:relative}
.suggest li{padding:8px 12px;cursor:pointer;font-size:.9rem}.suggest li:hover{background:#eef3fa}form.card{position:relative}