.oo-sr{--oo-navy:#102a43;--oo-orange:#f59e0b;--oo-teal:#0f766e;--oo-ink:#243b53;--oo-muted:#627d98;max-width:1060px;margin:28px auto;padding:clamp(18px,3vw,38px);background:#fff;border:1px solid #e5eaf0;border-radius:22px;box-shadow:0 18px 50px rgba(16,42,67,.08);color:var(--oo-ink);font-family:inherit}.oo-sr *{box-sizing:border-box}.oo-sr-heading{text-align:center;margin-bottom:25px}.oo-sr-kicker{display:inline-block;color:var(--oo-teal);font-size:12px;font-weight:800;letter-spacing:2px}.oo-sr-heading h2{margin:8px 0;color:var(--oo-navy);font-size:clamp(27px,4vw,38px);line-height:1.2}.oo-sr-heading p,.oo-sr-muted{color:var(--oo-muted);font-size:14px}.oo-sr-progress{height:7px;background:#e9eff5;border-radius:20px;overflow:hidden}.oo-sr-progress-fill{height:100%;width:25%;background:linear-gradient(90deg,var(--oo-teal),var(--oo-orange));transition:width .25s}.oo-sr-step-labels{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin:12px 0 30px;text-align:center;color:#829ab1;font-size:12px;font-weight:700}.oo-sr-step-labels span.active{color:var(--oo-navy)}.oo-sr-step{display:none}.oo-sr-step.active{display:block;animation:ooFade .2s ease}.oo-sr-step h3{color:var(--oo-navy);font-size:23px;margin:0 0 6px}.oo-sr-class-grid{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:12px;margin:22px 0}.oo-sr-class-card{position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:110px;border:1px solid #d9e2ec;border-radius:14px;background:#fff;cursor:pointer;transition:.2s}.oo-sr-class-card input{position:absolute;opacity:0}.oo-sr-class-card span{font-size:12px;color:var(--oo-muted)}.oo-sr-class-card strong{font-size:30px;color:var(--oo-navy)}.oo-sr-class-card:has(input:checked){border:2px solid var(--oo-teal);background:#effcf9;box-shadow:0 0 0 3px rgba(15,118,110,.08)}.oo-sr-subject-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin:20px 0}.oo-sr-subject{display:flex;align-items:center;gap:12px;padding:15px;border:1px solid #d9e2ec;border-radius:13px;cursor:pointer}.oo-sr-subject:has(input:checked){border-color:var(--oo-teal);background:#f0fdfa}.oo-sr-subject input{accent-color:var(--oo-teal);width:18px;height:18px}.oo-sr-subject strong{display:block;color:var(--oo-navy);font-size:14px}.oo-sr-subject small{color:var(--oo-muted)}.oo-sr-fields{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin:22px 0}.oo-sr-fields label,.oo-sr-coupon label{display:block;font-size:13px;font-weight:700;color:var(--oo-ink)}.oo-sr-fields input,.oo-sr-coupon input{display:block;width:100%;margin-top:7px;min-height:46px;border:1px solid #cbd5e1;border-radius:9px;padding:10px 12px;background:#fff;color:#243b53}.oo-sr-fields input:focus,.oo-sr-coupon input:focus{outline:2px solid rgba(15,118,110,.22);border-color:var(--oo-teal)}.oo-sr-consent{display:flex;gap:9px;align-items:flex-start;font-size:13px;color:var(--oo-muted);margin:15px 0}.oo-sr-consent input{margin-top:4px}.oo-sr-review{border:1px solid #e5eaf0;border-radius:13px;padding:18px;margin:20px 0}.oo-sr-review-row{display:flex;justify-content:space-between;gap:12px;padding:8px 0;border-bottom:1px solid #edf2f7;font-size:14px}.oo-sr-review-row:last-child{border:0}.oo-sr-coupon{margin:18px 0}.oo-sr-coupon>div{display:flex;gap:8px;margin-top:7px}.oo-sr-coupon input{margin:0;flex:1}.oo-sr-coupon small{display:block;color:var(--oo-muted);margin-top:7px}.oo-sr-total{display:flex;justify-content:space-between;align-items:center;padding:18px;background:#f0fdfa;border-radius:12px;color:var(--oo-navy)}.oo-sr-total strong{font-size:25px}.oo-sr-actions{display:flex;justify-content:space-between;gap:12px;margin-top:26px}.oo-sr-button{border:0;border-radius:10px;background:var(--oo-orange);color:#102a43;padding:13px 22px;min-height:47px;font-weight:800;cursor:pointer}.oo-sr-button:hover{filter:brightness(.97)}.oo-sr-button:disabled{opacity:.55;cursor:wait}.oo-sr-button-light{background:#fff;border:1px solid #cbd5e1;color:var(--oo-navy)}.oo-sr-secure{display:flex;justify-content:center;gap:20px;flex-wrap:wrap;color:var(--oo-muted);font-size:12px;margin-top:25px;padding-top:18px;border-top:1px solid #edf2f7}.oo-sr-error{color:#b42318;font-size:13px;margin-top:10px}.oo-sr-return{text-align:center;padding:40px 20px}.oo-sr-return h2{color:var(--oo-navy)}@keyframes ooFade{from{opacity:.4;transform:translateY(4px)}to{opacity:1;transform:none}}@media(max-width:700px){.oo-sr{margin:12px auto;padding:18px;border-radius:15px}.oo-sr-class-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:9px}.oo-sr-class-card{min-height:90px}.oo-sr-class-card strong{font-size:26px}.oo-sr-subject-grid,.oo-sr-fields{grid-template-columns:1fr}.oo-sr-step-labels{font-size:10px;gap:2px}.oo-sr-actions .oo-sr-button{flex:1;padding:12px 10px}.oo-sr-secure{gap:9px}}


/* V2 premium split layout */
.oo-sr-v2{max-width:1480px;padding:18px;background:#f1f3f6;border:0;border-radius:20px;box-shadow:none}
.oo-sr-v2 .oo-sr-heading{display:none}
.oo-sr-v2-layout{display:grid;grid-template-columns:minmax(0,2.05fr) minmax(290px,.95fr);gap:22px;align-items:start}
.oo-sr-v2-main{min-width:0;background:#fff;border:1px solid #e4eaf2;border-radius:15px;overflow:hidden;box-shadow:0 10px 28px rgba(16,42,67,.07)}
.oo-sr-v2-main:before{content:"☑ OnlineOlympiad Registration";display:block;padding:22px 26px;background:linear-gradient(110deg,#465bd0,#102f83);color:#fff;font-size:clamp(21px,2vw,29px);font-weight:850;letter-spacing:-.4px}
.oo-sr-v2-main #oo-sr-form{padding:24px}
.oo-sr-v2 .oo-sr-progress{display:none}
.oo-sr-v2 .oo-sr-step-labels{display:flex;justify-content:center;align-items:center;gap:10px;margin:0 0 34px;color:#74869c}
.oo-sr-v2 .oo-sr-step-labels span{border-radius:28px;background:#f0f4f8;padding:10px 15px;white-space:nowrap}
.oo-sr-v2 .oo-sr-step-labels span.active{background:#e3f5ff;color:#0878ae}
.oo-sr-v2 .oo-sr-step h3{font-size:25px;font-weight:850;margin-bottom:8px;letter-spacing:-.3px}
.oo-sr-v2 .oo-sr-step h3:before{display:inline-flex;align-items:center;justify-content:center;content:attr(data-number);width:30px;height:30px;border-radius:50%;background:#465bd0;color:white;font-size:15px;margin-right:12px}
.oo-sr-v2 .oo-sr-class-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin:24px 0}
.oo-sr-v2 .oo-sr-class-card{min-height:74px;border-radius:13px;box-shadow:0 2px 4px rgba(16,42,67,.04)}
.oo-sr-v2 .oo-sr-class-card strong{font-size:17px}
.oo-sr-v2 .oo-sr-class-card span{display:none}
.oo-sr-v2 .oo-sr-class-card:after{content:"";position:absolute;right:12px;top:12px;width:8px;height:8px;border-radius:50%;background:#e6edf5}
.oo-sr-v2 .oo-sr-class-card:has(input:checked){background:#eaf7ff;border:2px solid #08a6ec}
.oo-sr-v2 .oo-sr-class-card:has(input:checked):after{background:#08a6ec}
.oo-sr-v2 .oo-sr-subject-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
.oo-sr-v2 .oo-sr-subject{padding:17px;border-radius:12px}
.oo-sr-v2 .oo-sr-fields{gap:17px}
.oo-sr-v2 .oo-sr-fields input{border-radius:8px;min-height:48px}
.oo-sr-v2 .oo-sr-button{background:#0aa6e8;color:#fff;border-radius:9px;padding:14px 22px}
.oo-sr-v2 .oo-sr-button-light{background:#fff;color:#102a43}
.oo-sr-v2 .oo-sr-actions{justify-content:flex-end}
.oo-sr-v2-cart{background:#fff;border:1px solid #e6eaf0;border-radius:15px;overflow:hidden;box-shadow:0 10px 28px rgba(16,42,67,.08);position:sticky;top:24px}
.oo-sr-v2-cart-head{background:linear-gradient(110deg,#ff9c00,#ed8500);padding:22px 25px;color:#fff;font-size:26px;font-weight:850}
.oo-sr-v2-cart-body{padding:22px}
.oo-sr-v2-class{padding:16px 14px;background:#eef8ff;border-radius:10px;color:#0878ae;margin-bottom:26px}
.oo-sr-v2-cart-empty{text-align:center;padding:34px 8px;color:#8190a0}
.oo-sr-v2-cart-empty span{display:block;font-size:42px;margin-bottom:15px}
.oo-sr-v2-cart-empty p{margin:0 0 7px;font-size:16px}
.oo-sr-v2-cart-empty small{font-size:13px}
.oo-sr-v2-cart-item{display:flex;justify-content:space-between;gap:12px;padding:13px 0;border-bottom:1px solid #edf1f5;font-size:14px}
.oo-sr-v2-cart-total{display:flex;justify-content:space-between;gap:12px;padding:18px 0 5px;border-top:1px solid #e6ebf0;color:#102a43}
.oo-sr-v2-cart-total strong{font-size:23px}
.oo-sr-v2-cart-note{font-size:12px;color:#8190a0;line-height:1.5}
.oo-sr-v2 .oo-sr-secure{margin-top:18px}
@media(max-width:900px){.oo-sr-v2-layout{grid-template-columns:1fr}.oo-sr-v2-cart{position:static;order:-1}.oo-sr-v2-cart-body{padding:16px}.oo-sr-v2-cart-empty{padding:16px}.oo-sr-v2-main #oo-sr-form{padding:20px}}
@media(max-width:560px){.oo-sr-v2{padding:8px;margin:8px auto}.oo-sr-v2-main:before{padding:18px;font-size:20px}.oo-sr-v2 .oo-sr-step-labels{gap:5px;flex-wrap:wrap;margin-bottom:24px}.oo-sr-v2 .oo-sr-step-labels span{padding:8px 10px;font-size:11px}.oo-sr-v2 .oo-sr-class-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:9px}.oo-sr-v2 .oo-sr-subject-grid{grid-template-columns:1fr}.oo-sr-v2 .oo-sr-step h3{font-size:21px}.oo-sr-v2 .oo-sr-actions{gap:8px}.oo-sr-v2 .oo-sr-actions .oo-sr-button{font-size:13px}}

/* V2 navigation reliability */
.oo-sr-v2 .oo-sr-step{display:none !important}.oo-sr-v2 .oo-sr-step.active{display:block !important}.oo-sr-v2 .oo-sr-actions button[hidden]{display:none !important}

/* Subject price display: crossed-out MRP and current registration fee */
.oo-sr .oo-sr-subject .oo-sr-price {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 7px;
    margin-top: 6px;
    font-size: 12px;
    line-height: 1.4;
}
.oo-sr .oo-sr-subject .oo-sr-price del {
    color: #8795A5;
    font-size: 12px;
    font-weight: 500;
}
.oo-sr .oo-sr-subject .oo-sr-price b {
    color: #0F766E;
    font-size: 14px;
    font-weight: 800;
}
.oo-sr .oo-sr-subject .oo-sr-price em {
    display: inline-block;
    padding: 2px 5px;
    border-radius: 5px;
    color: #9A5B00;
    background: #FFF0C2;
    font-size: 9px;
    font-style: normal;
    font-weight: 800;
    letter-spacing: .2px;
}