:root{color-scheme:dark;--bg:#0a0a0b;--panel:#151517;--text:#f5f5f5;--muted:#b2b2bb;--red:#ff4b58;--line:#36363c}*{box-sizing:border-box}[hidden]{display:none!important}body{margin:0;background:var(--bg);color:var(--text);font:17px/1.55 -apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}main{max-width:700px;margin:auto;padding: max(24px,env(safe-area-inset-top)) 22px max(35px,env(safe-area-inset-bottom))}header{display:flex;justify-content:space-between;align-items:center;gap:12px;padding-bottom:24px;border-bottom:1px solid var(--line)}.brand{font-weight:900;font-size:15px;letter-spacing:.02em;text-decoration:none;color:white}.brand span{color:var(--red)}.tag{font-size:10px;letter-spacing:.15em;color:var(--muted)}.intro{padding:46px 0 20px}.eyebrow{font-size:11px;letter-spacing:.13em;font-weight:800;color:var(--red);margin:0 0 12px}h1{font-size:clamp(34px,7.6vw,56px);letter-spacing:-.045em;line-height:1.08;margin:18px 0 24px;font-weight:850}h2{font-size:23px;letter-spacing:-.025em;line-height:1.2;margin:0 0 15px}.lead{font-size:19px;color:#d1d1d6}.panel{background:var(--panel);border:1px solid var(--line);border-radius:18px;padding:25px;margin:20px 0}.section-heading{display:flex;justify-content:space-between;gap:10px;align-items:baseline}.pill{white-space:nowrap;font-size:12px;color:var(--muted);border:1px solid var(--line);padding:4px 10px;border-radius:30px}.muted{color:var(--muted);font-size:14px}label{display:block;font-size:14px;margin:12px 0 8px;font-weight:650}select,input{display:block;width:100%;font:inherit;color:white;background:#0d0d0e;border:1px solid #62626c;padding:15px 12px;border-radius:10px;min-height:52px}button{font:inherit;cursor:pointer;min-height:50px;border-radius:10px;padding:14px 17px;font-weight:650}button:focus-visible,a:focus-visible,summary:focus-visible,select:focus-visible,input:focus-visible{outline:3px solid white;outline-offset:4px}.primary{width:100%;background:#c31b2c;border:1px solid #fa4c59;color:white;display:flex;justify-content:space-between;align-items:center;margin-top:18px}.primary:hover{background:#dc2234}.secondary{background:#232327;border:1px solid #62626c;color:#fff;width:100%;margin-top:12px;text-align:left}.secondary:hover{background:#323238}.secondary:disabled{opacity:.5;cursor:default}.text-button{background:none;border:0;color:#e5e5ec;padding-left:0;text-decoration:underline;text-underline-offset:5px}.dots{display:flex;gap:9px;margin-top:24px}.dot{height:9px;flex:1;border-radius:8px;background:#38383f}.dot.filled{background:var(--red)}details{border-top:1px solid var(--line);padding-top:12px;margin-top:18px}summary{cursor:pointer;min-height:44px;padding:9px 0;font-weight:650}footer{margin:40px 0 0;color:var(--muted);font-size:13px}.footer-note{font-size:10px;letter-spacing:.14em;margin-top:30px}.scenario{font-size:21px;line-height:1.5}.question-card h1{font-size:36px;letter-spacing:-.03em}.think{border-left:3px solid var(--red);padding-left:16px;margin:28px 0}.think p{margin-bottom:0}#answer{border-top:1px solid var(--line);margin-top:25px;padding-top:25px}blockquote{margin:14px 0 25px;padding:2px 0 2px 17px;border-left:3px solid var(--red);color:#dedee3;font-style:italic}fieldset{padding:0;border:0;margin-top:26px}legend{font-size:14px;font-weight:650}.progress-track{height:4px;background:#36363c;margin:16px 0 25px;border-radius:4px}#progress{height:100%;background:var(--red);transition:width .2s}.library-card{border:1px solid var(--line);border-radius:12px;margin:15px 0;padding:16px}.library-card summary{font-size:18px}.library-card .eyebrow{margin-top:14px}#complete,#library{padding-top:25px}@media(max-width:380px){main{padding-left:16px;padding-right:16px}.panel{padding:19px}.tag{display:none}.section-heading{flex-wrap:wrap}}