:root{--bg: #0e1116;--panel: #181d25;--line: #2a323d;--ink: #eef3f7;--dim: #93a4b3;--accent: #4a9cc0;--good: #4ec98a;--bad: #d65a6a}*{box-sizing:border-box}html,body{margin:0;height:100%}body{background:radial-gradient(900px 560px at 50% -8%,#16202a,var(--bg));color:var(--ink);font-family:system-ui,-apple-system,Segoe UI,sans-serif;display:flex;justify-content:center;-webkit-user-select:none;user-select:none}#app{width:100%;max-width:560px;padding:12px 14px 28px}header{text-align:center;margin-bottom:6px}h1{margin:0;font-size:28px;letter-spacing:6px;font-weight:800;color:var(--accent)}.sub{margin:3px 0 0;color:var(--dim);font-size:13px}.bar{display:flex;gap:8px;justify-content:center;flex-wrap:wrap;align-items:center;margin:10px 0}.seg{display:inline-flex;background:var(--panel);border:1px solid var(--line);border-radius:999px;overflow:hidden}.seg button{background:none;border:none;color:var(--dim);padding:6px 13px;font:600 13px system-ui;cursor:pointer}.seg button.active{background:var(--accent);color:#04222e}.btn{background:var(--panel);border:1px solid var(--line);color:var(--ink);padding:8px 16px;border-radius:999px;font:700 14px system-ui;cursor:pointer}.btn:hover{border-color:var(--accent)}.btn.primary{background:var(--accent);color:#04222e;border-color:var(--accent)}.scoreboard{display:flex;gap:10px;justify-content:center;margin:8px 0 12px;flex-wrap:wrap}.readout{background:#0a0e13;border:1px solid var(--line);border-radius:8px;padding:5px 16px;font:800 18px ui-monospace,monospace;color:var(--accent);min-width:84px;text-align:center}.readout span{color:var(--dim);font-size:11px;display:block;font-weight:600;letter-spacing:.5px}.stage{position:relative}.reader{position:relative;background:#0a0e13;border:1px solid var(--line);border-radius:12px;height:200px;display:flex;align-items:center;justify-content:center;overflow:hidden}.reader:before,.reader:after{content:"";position:absolute;left:50%;width:2px;height:16px;background:var(--line);transform:translate(-50%)}.reader:before{top:18px}.reader:after{bottom:18px}#flashword{font:800 clamp(28px,9vw,52px) ui-monospace,"Cascadia Code",monospace;color:var(--ink);letter-spacing:1px;text-align:center;padding:0 12px}.progress{height:5px;background:var(--line);border-radius:999px;margin:10px 0 4px;overflow:hidden}.progress>div{height:100%;width:0%;background:var(--accent);transition:width .08s linear}.quiz{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:16px}.quiz h3{margin:0 0 12px;font-size:16px;color:var(--ink);line-height:1.4}.quiz .opt{display:block;width:100%;text-align:left;background:#0a0e13;border:1px solid var(--line);color:var(--ink);padding:11px 14px;border-radius:8px;margin-bottom:8px;font:500 14px system-ui;cursor:pointer;line-height:1.35}.quiz .opt:hover{border-color:var(--accent)}.quiz .opt.correct{border-color:var(--good);background:#11251b;color:#a8e9c4}.quiz .opt.wrong{border-color:var(--bad);background:#281417;color:#f2a8b2}.quiz .feedback{margin-top:10px;text-align:center;font:700 15px system-ui;min-height:20px}.quiz .feedback.good{color:var(--good)}.quiz .feedback.bad{color:var(--bad)}.center{text-align:center}.idle{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:22px;text-align:center}.idle p{color:var(--dim);font-size:14px;line-height:1.5;margin:6px 0 16px}.passage-title{color:var(--accent);font-weight:700;font-size:14px;margin:14px 0 4px;text-align:center}.overlay{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:#080c10d1;border-radius:12px;backdrop-filter:blur(3px)}.overlay.hidden{display:none}.card{background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:22px 26px;text-align:center;max-width:340px}.card h2{margin:0 0 6px;font-size:24px;color:var(--accent)}.card p{margin:6px 0;color:var(--dim);font-size:14px}.card .row{display:flex;gap:8px;justify-content:center;margin-top:16px}.hint{text-align:center;color:var(--dim);font-size:12px;margin-top:14px;line-height:1.5}