.study-root{--s-ink:#17181a;--s-muted:#5c6067;--s-line:#d9dce1;--s-bg:#f7f8fa;--s-card:#fff;--s-accent:#1f4fd8;--s-error:#a4232b;background:var(--s-bg);min-height:100dvh;color:var(--s-ink);justify-content:center;padding:24px 16px 64px;font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;font-size:17px;line-height:1.55;display:flex}@media (prefers-color-scheme:dark){.study-root{--s-ink:#f2f3f5;--s-muted:#a5abb4;--s-line:#33363c;--s-bg:#17181a;--s-card:#202226;--s-accent:#7ea2ff;--s-error:#ff8f95}}.study-main{width:100%;max-width:40rem}.study-card{background:var(--s-card);border:1px solid var(--s-line);border-radius:12px;padding:28px 24px 32px}.study-kicker{letter-spacing:.02em;color:var(--s-muted);margin:0 0 8px;font-size:.82rem}.study-h1{margin:0 0 16px;font-size:1.55rem;font-weight:600;line-height:1.25}.study-h2{margin:24px 0 8px;font-size:1.05rem;font-weight:600}.study-lede{color:var(--s-ink);margin:0 0 16px}.study-note{color:var(--s-muted);margin:16px 0 0;font-size:.9rem}.study-error{border:1px solid var(--s-error);color:var(--s-error);background:color-mix(in srgb, var(--s-error) 8%, transparent);border-radius:8px;margin:0 0 16px;padding:12px 14px}.study-list{color:var(--s-muted);margin:0;padding-left:20px}.study-list li{margin-bottom:8px}.study-consent{margin-bottom:24px}.study-form{flex-direction:column;gap:18px;margin-top:8px;display:flex}.study-check{cursor:pointer;align-items:flex-start;gap:12px;display:flex}.study-check input{flex:none;width:20px;height:20px;margin-top:4px}.study-field{justify-content:space-between;align-items:center;gap:16px;display:flex}.study-field>span{font-variant-numeric:tabular-nums}.study-field input{font:inherit;border:1px solid var(--s-line);background:var(--s-bg);color:var(--s-ink);border-radius:8px;width:8rem;min-width:0;padding:10px 12px}.study-field-block{display:block}.study-field-block>span{margin-bottom:8px;display:block}.study-field-block input{width:100%}.study-fieldset{border:1px solid var(--s-line);border-radius:10px;margin:0;padding:16px}.study-fieldset legend{padding:0 6px;font-weight:600}.study-radio{cursor:pointer;align-items:center;gap:12px;min-height:44px;padding:9px 0;display:flex}.study-radio input{flex:none;width:20px;height:20px}.study-btn{font:inherit;text-align:center;background:var(--s-accent);color:#fff;cursor:pointer;border:0;border-radius:8px;min-height:48px;padding:14px 20px;font-weight:600;text-decoration:none;display:inline-block}.study-btn:disabled{background:var(--s-line);color:var(--s-muted);cursor:not-allowed}@media (prefers-color-scheme:dark){.study-btn{color:#10121a}}.study-btn:focus-visible,.study-check input:focus-visible,.study-field input:focus-visible,.study-radio input:focus-visible{outline:3px solid var(--s-accent);outline-offset:2px}.study-stimulus{text-align:center;flex-direction:column;justify-content:center;align-items:center;gap:14px;min-height:46vh;display:flex}.study-stimulus-name{letter-spacing:-.01em;margin:0;font-size:clamp(2rem,8vw,3.1rem);font-weight:600;line-height:1.15}.study-stimulus-category{color:var(--s-muted);max-width:22rem;margin:0;font-size:1.02rem}.study-context{border:1px solid var(--s-line);background:var(--s-bg);border-radius:10px;margin:0 0 20px;padding:16px 18px}.study-context-line{margin:0 0 8px;font-size:1.05rem}.study-context-note{color:var(--s-muted);margin:0;font-size:.94rem}.study-stimulus-note{color:var(--s-muted);max-width:24rem;margin:0;font-size:.9rem}.study-timer{background:var(--s-line);border-radius:2px;height:4px;margin:24px 0 0;overflow:hidden}.study-timer-bar{background:var(--s-accent);height:100%;animation:5s linear forwards study-countdown;display:block}@keyframes study-countdown{0%{width:100%}to{width:0%}}@media (prefers-reduced-motion:reduce){.study-timer-bar{width:100%;animation:none}}.study-price-intro{margin:0 0 14px;font-weight:600}.study-price-row{border-top:1px solid var(--s-line);justify-content:space-between;align-items:center;gap:14px;padding:10px 0;display:flex}.study-price-row:first-of-type{border-top:0}.study-price-row>span:first-child{flex:auto}.study-price-input{flex:none;align-items:center;gap:4px;display:inline-flex}.study-price-input input{font:inherit;border:1px solid var(--s-line);background:var(--s-bg);width:5.5rem;color:var(--s-ink);text-align:right;border-radius:8px;padding:10px 12px}.study-reveal{border:1px solid var(--s-line);background:var(--s-bg);text-align:center;border-radius:10px;margin:0 0 20px;padding:22px 18px}.study-reveal-name{margin:0 0 6px;font-size:clamp(1.5rem,6vw,2.1rem);font-weight:600;line-height:1.2}.study-reveal-sub{color:var(--s-muted);margin:0;font-size:.92rem}.study-code{border:1px dashed var(--s-line);background:var(--s-bg);text-align:center;-webkit-user-select:all;user-select:all;word-break:break-all;border-radius:8px;margin:4px 0 20px;padding:16px;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:1.3rem}