.registration-section{position:relative;overflow:hidden;padding:clamp(72px,9vw,118px) 0;background:linear-gradient(145deg,#071b28 0%,#0b2630 54%,#102035 100%);color:#f5fbff}
.registration-section::before{content:"";position:absolute;inset:-25% auto auto -8%;width:520px;height:520px;border-radius:50%;background:radial-gradient(circle,rgba(24,255,132,.16),transparent 68%);pointer-events:none}
.registration-shell{position:relative;width:min(1160px,calc(100% - 40px));margin:auto}
.registration-kicker{display:inline-flex;align-items:center;gap:.55rem;margin:0 0 16px;padding:8px 13px;border:1px solid rgba(41,255,216,.38);border-radius:999px;color:#43ffb0;background:rgba(8,38,46,.72);font-size:.78rem;font-weight:800;letter-spacing:.11em;text-transform:uppercase}
.registration-heading{max-width:850px;margin:0;font-size:clamp(2.25rem,5.2vw,4.9rem);line-height:.98;letter-spacing:-.045em;color:#fff}
.registration-lead{max-width:760px;margin:22px 0 38px;color:#bfd1d8;font-size:clamp(1rem,1.7vw,1.2rem);line-height:1.65}
.registration-layout{display:grid;grid-template-columns:minmax(0,1.7fr) minmax(270px,.72fr);gap:24px;align-items:start}
.registration-form{padding:clamp(22px,4vw,42px);border:1px solid rgba(115,237,222,.18);border-radius:26px;background:rgba(7,23,31,.88);box-shadow:0 28px 80px rgba(0,0,0,.26);backdrop-filter:blur(12px)}
.registration-form fieldset{margin:0 0 30px;padding:0;border:0}
.registration-form legend{width:100%;margin:0 0 17px;padding:0 0 11px;border-bottom:1px solid rgba(171,221,225,.14);color:#fff;font-size:1.08rem;font-weight:850}
.registration-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:17px}
.registration-field{display:flex;flex-direction:column;gap:8px}.registration-field--wide{grid-column:1/-1}
.registration-field label{color:#d8e9ed;font-size:.88rem;font-weight:750}
.registration-field input,.registration-field select,.registration-field textarea{width:100%;box-sizing:border-box;border:1px solid rgba(145,204,211,.28);border-radius:13px;padding:13px 14px;background:#0c2832;color:#fff;font:inherit;outline:none;transition:border-color .2s,box-shadow .2s,background .2s}
.registration-field textarea{min-height:112px;resize:vertical}
.registration-field input:focus,.registration-field select:focus,.registration-field textarea:focus{border-color:#25f0aa;box-shadow:0 0 0 4px rgba(37,240,170,.12);background:#0d303a}
.registration-field select option{background:#0c2832;color:#fff}
.registration-choice{display:flex;gap:10px;align-items:flex-start;padding:14px;border:1px solid rgba(145,204,211,.2);border-radius:14px;background:rgba(12,40,50,.64)}
.registration-choice input{margin-top:3px;accent-color:#24eca5}.registration-choice span{color:#c8dce1;font-size:.9rem;line-height:1.45}
.registration-actions{display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.registration-submit{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:52px;border:0;border-radius:14px;padding:0 24px;background:linear-gradient(105deg,#25f0a5,#29d7e5);color:#031b23;font:inherit;font-weight:900;cursor:pointer;box-shadow:0 13px 32px rgba(33,234,181,.2);transition:transform .2s,box-shadow .2s}
.registration-submit:hover{transform:translateY(-2px);box-shadow:0 18px 38px rgba(33,234,181,.28)}
.registration-help{margin:0;max-width:420px;color:#90aeb6;font-size:.8rem;line-height:1.45}
.registration-status{display:none;width:100%;margin:4px 0 0;padding:12px 14px;border-radius:12px;background:rgba(35,237,163,.1);color:#88ffd0;font-size:.9rem}
.registration-status.is-visible{display:block}
.registration-aside{position:sticky;top:92px;display:grid;gap:16px}
.registration-card{padding:24px;border:1px solid rgba(115,237,222,.17);border-radius:22px;background:rgba(10,35,43,.78)}
.registration-card h3{margin:0 0 12px;color:#fff;font-size:1.08rem}.registration-card p,.registration-card li{color:#b9ced4;font-size:.9rem;line-height:1.55}
.registration-card ul{margin:0;padding-left:18px}.registration-card li+li{margin-top:8px}
.registration-date{display:grid;grid-template-columns:auto 1fr;gap:13px;align-items:center}
.registration-date strong{display:grid;place-items:center;width:58px;height:58px;border-radius:16px;background:#24eca5;color:#05202a;font-size:1.5rem}
.registration-date span{color:#dbecef;line-height:1.4}
@media(max-width:820px){.registration-layout{grid-template-columns:1fr}.registration-aside{position:static;grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:620px){.registration-shell{width:min(100% - 26px,1160px)}.registration-grid{grid-template-columns:1fr}.registration-field--wide{grid-column:auto}.registration-aside{grid-template-columns:1fr}.registration-actions{align-items:stretch}.registration-submit{width:100%}}