:root{--primary:#155eef;--primary-dark:#0b46c5;--ink:#14213d;--muted:#596780;--line:#d9e1ee;--surface:#fff;--soft:#f3f7ff;--danger:#b42318;--radius:18px;font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;color:var(--ink);background:#f6f8fc}
*{box-sizing:border-box}body{margin:0;min-height:100vh;background:radial-gradient(circle at top left,#e6efff,transparent 38%),#f7f9fc;line-height:1.55}.shell{width:min(900px,calc(100% - 28px));margin:0 auto;padding:28px 0}.panel{background:var(--surface);border:1px solid #e4e9f2;border-radius:24px;padding:clamp(24px,5vw,56px);box-shadow:0 18px 50px rgba(20,33,61,.08)}[hidden]{display:none!important}.eyebrow{text-transform:uppercase;letter-spacing:.1em;font-size:.78rem;font-weight:800;color:var(--primary)}h1{font-size:clamp(2rem,6vw,3.5rem);line-height:1.08;margin:.25em 0 .55em}h2{font-size:1.05rem;margin:0 0 .35rem}.lead{font-size:1.12rem;color:var(--muted);max-width:68ch}.dimensions{display:grid;gap:12px;margin:28px 0}.dimensions article{padding:18px;border-radius:var(--radius);background:var(--soft)}.dimensions p{margin:0;color:var(--muted)}.meta{font-weight:700;color:var(--muted)}button,input{font:inherit}button{border:0;border-radius:12px;padding:13px 19px;font-weight:750;cursor:pointer}.primary{background:var(--primary);color:#fff}.primary:hover{background:var(--primary-dark)}.secondary{background:#edf2fa;color:var(--ink)}button:focus-visible,input:focus-visible,.answer:focus-within{outline:3px solid #8eb3ff;outline-offset:3px}button:disabled{opacity:.55;cursor:wait}.progress-header{margin-bottom:30px}progress{width:100%;height:9px;border:0;border-radius:99px;overflow:hidden}progress::-webkit-progress-bar{background:#e8edf5}progress::-webkit-progress-value{background:var(--primary)}fieldset{border:0;padding:0;margin:0}legend{font-size:clamp(1.45rem,4vw,2.15rem);font-weight:800;line-height:1.22;margin-bottom:24px}.answers{display:grid;gap:12px}.answer{display:block;border:2px solid var(--line);border-radius:var(--radius);padding:17px 18px;cursor:pointer;transition:.15s}.answer:hover{border-color:#91adcf;background:#fbfdff}.answer:has(input:checked){border-color:var(--primary);background:var(--soft);box-shadow:0 0 0 1px var(--primary)}.answer input{position:absolute;opacity:0;pointer-events:none}.actions{display:flex;justify-content:space-between;gap:12px;margin-top:26px}.stacked{justify-content:flex-start;flex-wrap:wrap}label{display:block;font-weight:750;margin:20px 0 7px}input{width:100%;padding:14px;border:2px solid var(--line);border-radius:12px;color:var(--ink)}.hint{font-size:.9rem;color:var(--muted)}.message{min-height:1.5em;font-weight:700}.error{color:var(--danger)}.centered{text-align:center;padding-block:90px}.spinner{width:44px;height:44px;margin:0 auto 24px;border:5px solid #dbe6fa;border-top-color:var(--primary);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.sent-email{font-size:1.15rem;font-weight:800}.change-form{margin-top:22px;padding-top:8px;border-top:1px solid var(--line)}.change-form button{margin-top:12px}@media(min-width:768px){.shell{padding:60px 0}.dimensions{grid-template-columns:repeat(3,1fr)}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;animation:none!important;transition:none!important}}