:root{--ink:#f5e9d0;--ink-dim:rgba(245,233,208,.65);--ink-faint:rgba(245,233,208,.42);--bg:#0a0608;--paper:rgba(15,8,6,.82);--paper-soft:rgba(15,8,6,.55);--line:rgba(212,168,87,.22);--line-mid:rgba(212,168,87,.42);--line-strong:rgba(212,168,87,.65);--accent:#d4a857;--accent-warm:#fbe8b4;--accent-deep:#a87930;--vinho:#6a121a;--shadow:0 18px 48px rgba(0,0,0,.55),0 6px 16px rgba(0,0,0,.35)}*{box-sizing:border-box}html,body{margin:0;padding:0;min-height:100dvh;background:var(--bg);color:var(--ink);font-family:Inter,system-ui,sans-serif;line-height:1.5;overflow-x:hidden}.proto-shell{position:relative;min-height:100dvh;display:flex;align-items:center;justify-content:center;padding:24px}.proto-bg{position:fixed;inset:0;z-index:0;background-position:center;background-size:cover;filter:contrast(1.02) brightness(.55)}.proto-bg::after{content:"";position:absolute;inset:0;background:radial-gradient(ellipse at 50% 55%,rgba(7,4,6,.35) 0%,rgba(7,4,6,.75) 60%,rgba(7,4,6,.96) 100%)}.proto-top{position:fixed;top:0;left:0;right:0;display:flex;align-items:center;justify-content:space-between;padding:16px 24px;z-index:100}.proto-top__brand{display:block;line-height:0;text-decoration:none}.proto-top__logo{display:block;height:22px;width:auto;filter:drop-shadow(0 1px 8px rgba(0,0,0,.7))}.proto-top__back{font-size:14px;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-dim);text-decoration:none;padding:6px 12px;border:1px solid var(--line);border-radius:999px;transition:border-color .15s,color .15s,background .15s}.proto-top__back:hover{color:var(--ink);border-color:var(--accent);background:rgba(212,168,87,.08)}.q-card{position:relative;z-index:1;background:var(--paper);border:1px solid var(--line);backdrop-filter:blur(14px) saturate(1.18);-webkit-backdrop-filter:blur(14px) saturate(1.18);padding:clamp(28px,4vmin,42px) clamp(28px,4vmin,48px);border-radius:16px;box-shadow:var(--shadow);width:min(560px,calc(100vw - 48px));text-align:center}.q-card__title{font-family:"Cormorant Garamond",Georgia,serif;font-weight:600;font-size:clamp(26px,3.4vmin,38px);line-height:1.12;margin:0 0 clamp(20px,2.6vh,28px);color:var(--ink);text-wrap:balance}.q-card__title em{font-style:italic;color:var(--accent);font-weight:600}.q-options{display:grid;gap:10px;grid-template-columns:repeat(auto-fill,minmax(180px,1fr))}.q-options--single{grid-template-columns:1fr}.q-options--narrow{grid-template-columns:repeat(auto-fill,minmax(140px,1fr));max-width:460px;margin:0 auto}.q-option{appearance:none;cursor:pointer;background:rgba(245,233,208,.04);border:1px solid var(--line);color:var(--ink);padding:14px 16px;border-radius:10px;font:600 14px/1.3 Inter,system-ui,sans-serif;transition:background .15s,border-color .15s,transform .12s;text-align:center}.q-option:hover{background:rgba(212,168,87,.12);border-color:var(--accent);transform:translateY(-1px)}.q-option:active{transform:translateY(0)}.q-card.is-leaving{opacity:0;transform:translateY(-8px) scale(.98);transition:opacity .25s ease,transform .25s ease}.q-card.is-entering{opacity:0;transform:translateY(8px) scale(1.01)}.q-card.is-active{opacity:1;transform:translateY(0) scale(1);transition:opacity .35s ease,transform .35s ease}.proto-stage{position:relative;z-index:1;width:100%;min-height:100dvh;display:flex;align-items:center;justify-content:center;padding:24px}.btn{appearance:none;cursor:pointer;font:600 14px/1 Inter,system-ui,sans-serif;letter-spacing:.02em;padding:14px 24px;border-radius:999px;border:1px solid var(--line-strong);background:var(--paper);color:var(--ink);transition:all .15s ease;display:inline-flex;align-items:center;gap:8px}.btn:hover{background:rgba(212,168,87,.08);border-color:var(--accent);color:var(--accent)}.btn--primary{background:linear-gradient(160deg,var(--accent-warm),var(--accent) 55%,var(--accent-deep));color:#1a1208;border:0;font-weight:700;box-shadow:0 10px 28px rgba(212,168,87,.35),inset 0 0 0 1px rgba(255,237,180,.55)}.btn--primary:hover{background:linear-gradient(160deg,var(--accent-warm),var(--accent) 55%,var(--accent-deep));color:#1a1208;transform:translateY(-1px);box-shadow:0 14px 38px rgba(212,168,87,.5),inset 0 0 0 1px rgba(255,237,180,.7)}.btn--ghost{background:transparent;border-color:rgba(245,233,208,.18);color:var(--ink-dim)}.btn--ghost:hover{color:var(--ink);border-color:var(--accent);background:rgba(245,233,208,.04)}.login-grid{display:grid;gap:10px;grid-template-columns:1fr;max-width:420px;margin:0 auto}.login-btn{appearance:none;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:10px;padding:15px 20px;border-radius:12px;font:600 17px/1 Inter,system-ui,sans-serif;background:var(--paper);border:1px solid var(--line-strong);color:var(--ink);transition:all .15s ease}.login-btn:hover{background:rgba(212,168,87,.1);border-color:var(--accent)}.login-btn__ico{width:18px;height:18px;display:inline-flex;align-items:center;justify-content:center;font-size:16px}.login-anon{display:block;margin-top:14px;font-size:14px;color:var(--ink-faint);text-decoration:none;text-align:center;letter-spacing:.04em;border-bottom:1px dashed var(--line);display:inline-block;padding:2px 0;margin-left:auto;margin-right:auto}.login-anon:hover{color:var(--ink-dim);border-bottom-color:var(--accent)}.demo-side{position:absolute;right:24px;bottom:24px;width:clamp(160px,22vw,240px);height:clamp(160px,22vw,240px);border:1px solid var(--line);border-radius:14px;background:var(--paper-soft);overflow:hidden;opacity:0;transform:translateY(8px);transition:opacity .4s ease,transform .4s ease;pointer-events:none}.demo-side.is-visible{opacity:1;transform:translateY(0)}.demo-side__label{position:absolute;left:10px;top:10px;font-size:14.5px;letter-spacing:.18em;text-transform:uppercase;color:var(--accent);font-weight:700}.hint{position:absolute;left:0;right:0;bottom:16px;text-align:center;font-size:15px;letter-spacing:.15em;text-transform:uppercase;color:var(--ink-faint);pointer-events:none}.cstage::after,.jstage::after{content:"";position:absolute;inset:0;z-index:2;background:rgba(4,2,3,.34);pointer-events:none}