:root{color-scheme:dark;--bg:#0b1024;--panel:#151d37;--muted:#b3bdd7;--teal:#78ebd2;--coral:#ffab96;--line:#303c5d;--white:#f7f8ff;font-family:Inter,"Segoe UI",system-ui,sans-serif;font-synthesis:none}
*{box-sizing:border-box}body{margin:0;color:var(--white);background:radial-gradient(ellipse at 80% 10%,#24335880,transparent 48%),var(--bg);min-height:100dvh}a{color:inherit}.shell{max-width:680px;margin:auto;padding:28px 24px 20px}header{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-bottom:42px}.brand{display:flex;align-items:center;gap:12px;font-size:15px;font-weight:800;letter-spacing:1.2px;text-decoration:none}.brand-mark{font-size:32px;letter-spacing:-5px;padding-right:5px;color:var(--teal);font-weight:900}.brand-mark span{color:var(--coral)}.subbrand{display:block;font-size:10px;letter-spacing:3.1px;color:var(--muted);margin-top:3px}.connection{font-size:11px;color:var(--muted);text-align:right}.connection.online{color:var(--teal)}.card{background:var(--panel);border:1px solid var(--line);border-radius:22px;padding:32px;margin-bottom:20px}.hero{background:linear-gradient(145deg,#1c2946,#151d37 65%)}.eyebrow{font-size:10px;letter-spacing:2px;font-weight:800;color:var(--teal);line-height:1.7}h1{font-size:clamp(36px,8vw,54px);line-height:1.06;letter-spacing:-1.9px;margin:22px 0}h2{font-size:18px;letter-spacing:-.3px;margin:0}p{line-height:1.65;color:var(--muted)}.intro{font-size:16px;max-width:440px;margin-bottom:30px}form{display:grid;gap:10px}label{font-size:13px;font-weight:650;margin-top:6px}input{font:inherit;color:var(--white);background:#0e162c;border:1px solid #4c5979;border-radius:10px;padding:16px;width:100%;min-width:0}input::placeholder{color:#8e9bb9}#room-code{text-transform:uppercase;letter-spacing:4px;font-size:20px}button{font:inherit;cursor:pointer;touch-action:manipulation;border-radius:11px;border:1px solid transparent;padding:16px;min-height:52px;font-weight:700}button.primary{color:#112b2b;background:var(--teal);display:flex;justify-content:space-between;width:100%;margin-top:12px}.primary:hover{background:#9df5e2}button:disabled{opacity:.55;cursor:default}button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid var(--coral);outline-offset:4px}.hint{font-size:12px;line-height:1.7}.hero>.hint{margin-bottom:0;text-align:center}.room-line{display:flex;justify-content:space-between;font-size:12px;color:var(--muted);margin:0 3px 16px;gap:12px}.room-line strong{color:var(--white);letter-spacing:2px;margin-left:6px}.question-top{display:flex;align-items:center;justify-content:space-between}.timer{font-size:22px;font-weight:800;color:var(--coral);font-variant-numeric:tabular-nums}.question{font-size:clamp(25px,6vw,34px);line-height:1.2;letter-spacing:-.7px;margin-top:10px}.choices{display:grid;gap:10px;margin-top:24px}.choice{display:flex;gap:14px;align-items:center;text-align:left;border-color:#526080;background:#1d2946;color:var(--white);font-weight:600;line-height:1.4}.choice .letter{display:grid;place-items:center;background:#34405c;width:30px;height:30px;border-radius:7px;flex-shrink:0}.choice.selected{border-color:var(--coral);background:#3b2935}.choice.correct{border-color:var(--teal);background:#153d3b}.choice:disabled{opacity:1}.answer-status{font-size:14px;color:var(--teal);min-height:24px}.reveal{border-top:1px solid var(--line);padding-top:20px}.reveal h2{color:var(--teal);line-height:1.5}.reveal p{font-size:14px;margin-bottom:0}.section-heading{display:flex;justify-content:space-between;align-items:center;gap:12px}.pill{font-size:12px;padding:6px 10px;border-radius:20px;background:#2b3653;color:var(--muted)}.roster{padding:0;list-style:none;margin:18px 0 0}.roster li{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:14px 0;border-top:1px solid var(--line)}.roster .name{display:block;font-weight:650;overflow-wrap:anywhere}.roster .detail{font-size:11px;color:var(--muted);display:block;margin-top:5px}.score{color:var(--teal);font-weight:800;white-space:nowrap}.notice,.feedback{padding:18px;border:1px solid #856349;background:#3c2c2c;border-radius:12px;font-size:14px;color:#ffe3b8;margin:12px 0 20px;line-height:1.6}.quiet{background:transparent;color:var(--muted);border-color:var(--line);font-size:13px;width:100%}footer{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:10px;color:#96a3c0;margin-top:32px;line-height:1.6}.host-tools{display:grid;gap:10px}.host-tools button{margin:0}.host-code{font-size:42px;letter-spacing:6px;color:var(--teal);margin:12px 0}.private-link{display:block;overflow-wrap:anywhere;padding:16px;background:#10192e;border:1px dashed #64708d;border-radius:10px;font-size:12px;line-height:1.7}pre{white-space:pre-wrap;overflow-wrap:anywhere;font-size:12px}[hidden]{display:none!important}@media(max-width:430px){.shell{padding:20px 16px}.card{padding:24px 20px;border-radius:18px}header{margin-bottom:28px}.brand{font-size:13px}.subbrand{font-size:9px}.eyebrow{font-size:9px}footer{font-size:9px}}@media(prefers-reduced-motion:no-preference){button{transition:background-color .12s ease,border-color .12s ease}}