:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;--ink:#0f2a3a;--muted:#1f4e6b;--soft:#475569;--page:#90d5ff;--card:#fff;--line:#d3ecfb;--field:#6b8aa6;--sky:#0ea5e9;--sky-btn:#0277b3;--sky-text:#0369a1;--sky-ink:#075985;--focus:#0284c7;--tint:#e0f2fe;--bad:#b3261e;--ok:#1f7a4d}*{box-sizing:border-box}html{-webkit-text-size-adjust:100%;background:var(--page)}body{background:var(--page);color:var(--ink);margin:0;font:16px/1.5 ui-rounded,SF Pro Rounded,system-ui,-apple-system,Segoe UI,Roboto,sans-serif}.rf-page{max-width:560px;padding:max(20px, env(safe-area-inset-top)) 16px max(32px, env(safe-area-inset-bottom));margin:0 auto}.rf-hero{padding:12px 4px 20px}.rf-centre{letter-spacing:.02em;min-height:1.5em;color:var(--muted);margin:0 0 6px;font-size:13px;font-weight:600}h1{letter-spacing:-.01em;margin:0 0 12px;font-size:clamp(26px,7vw,34px);line-height:1.15}h2{margin:0 0 4px;font-size:21px}.rf-lead{color:var(--muted);margin:0 0 14px;font-size:17px}.rf-offer{background:var(--tint);border:1.5px solid var(--sky);color:var(--ink);border-radius:14px;margin:0;padding:12px 14px;font-size:17px}.rf-offer strong{color:var(--sky-ink)}.rf-hero h1{color:#fff;font-size:min(clamp(26px,7vw,34px),8.06452vw - 3.22581px)}.rf-name{color:var(--ink)}a{color:var(--sky-ink)}.rf-card{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:20px 18px 22px;box-shadow:0 6px 24px #0369a12e}.rf-sub{color:var(--soft);margin:0 0 16px}.rf-row{grid-template-columns:1fr;gap:0 12px;display:grid}@media (width>=480px){.rf-row{grid-template-columns:1fr 1fr}}.rf-field{min-width:0;margin-bottom:14px}.rf-field>label{margin-bottom:6px;font-size:15px;font-weight:600;display:block}input[type=text],input[type=tel],input[type=email],input:not([type]),select{width:100%;min-height:48px;font:inherit;color:var(--ink);border:1.5px solid var(--field);background:#fff;border-radius:12px;padding:10px 12px;font-size:16px}select{appearance:none;background:#fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%235f5b6b' stroke-width='2'/%3E%3C/svg%3E") right 14px center no-repeat;padding-right:36px}input:focus-visible,select:focus-visible,.rf-button:focus-visible,#subjects-group:focus-visible{outline:3px solid var(--focus);outline-offset:1px;border-color:var(--focus)}input[aria-invalid=true],select[aria-invalid=true]{border-color:var(--bad)}.rf-hint{color:var(--soft);margin:6px 0 0;font-size:14px}.rf-error{color:var(--bad);margin:6px 0 0;font-size:14px;font-weight:600}.rf-problem{background:#fdecea;border-radius:10px;padding:10px 12px}.rf-chips{grid-template-columns:1fr;gap:8px;display:grid}@media (width>=480px){.rf-chips{grid-template-columns:repeat(3,1fr)}}.rf-chip{text-align:center;border:1.5px solid var(--field);cursor:pointer;background:#fff;border-radius:12px;justify-content:center;align-items:center;min-height:48px;padding:8px 10px;font-weight:600;display:flex}.rf-chip input{opacity:0;pointer-events:none;position:absolute}.rf-chip.on-maths{color:#0277b3;background:#0277b32e;border-color:#0277b3}.rf-chip.on-english{color:#dc2626;background:#dc26262e;border-color:#dc2626}.rf-chip.on-both{color:#7c3aed;background:#7c3aed2e;border-color:#7c3aed}.rf-chip:has(input:focus-visible){outline:3px solid var(--focus);outline-offset:1px}.rf-field>label.rf-consent{cursor:pointer;align-items:flex-start;gap:12px;display:flex;font-size:15px!important;font-weight:400!important}.rf-consent input{width:24px;height:24px;accent-color:var(--sky-btn);flex:none;margin:0}.rf-button{width:100%;min-height:54px;font:inherit;color:var(--ink);box-shadow:none;cursor:pointer;background:#90d5ff;border:none;border-radius:12px;margin-top:6px;padding:16px;font-size:16px;font-weight:600}.rf-button:hover:not(:disabled){background:#7ccbf9}.rf-button:disabled{color:#5b6673;cursor:not-allowed;background:#d9dee3}.rf-button.busy:disabled{color:var(--ink);opacity:.7;cursor:progress;background:#90d5ff}.rf-need{color:var(--soft);text-align:center;margin:8px 0 0;font-size:14px}.rf-trap{width:1px;height:1px;position:absolute;left:-10000px;overflow:hidden}.rf-thanks{text-align:center;margin-top:24px}.rf-tick{color:#fff;background:var(--ok);border-radius:50%;place-items:center;width:64px;height:64px;margin:0 auto 12px;font-size:34px;display:grid}.rf-steps{counter-reset:s;text-align:left;margin:18px 0 0;padding:0;list-style:none}.rf-steps li{counter-increment:s;border-top:1px solid var(--line);padding:10px 0 10px 44px;position:relative}.rf-steps li:before{content:counter(s);width:30px;height:30px;color:var(--sky-ink);background:var(--tint);border:2px solid var(--sky);border-radius:50%;place-items:center;font-weight:700;display:grid;position:absolute;top:10px;left:0}@media (prefers-reduced-motion:no-preference){.rf-button{transition:background .15s}}