:root{--bg: #0d1018;--panel: #1a1f2e;--line: #2a3146;--ink: #eef1f8;--dim: #97a0bd;--accent: #8a6fd0;--ok: #6fd0a8}*{box-sizing:border-box}html,body{margin:0;height:100%}body{background:radial-gradient(1000px 620px at 50% -10%,#161a2c,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:600px;padding:12px 12px 26px}header{text-align:center;margin-bottom:6px}h1{margin:0;font-size:26px;letter-spacing:4px;font-weight:700;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 14px;font:600 13px system-ui;cursor:pointer}.seg button.active{background:var(--accent);color:#0e0a1c}.btn{background:var(--panel);border:1px solid var(--line);color:var(--ink);padding:7px 15px;border-radius:999px;font:700 13px system-ui;cursor:pointer}.btn:hover{border-color:var(--accent)}.status{text-align:center;min-height:20px;margin:6px 0;color:var(--dim);font-size:13px;font-weight:600}.status b{color:var(--ink)}.stage{position:relative;display:flex;justify-content:center}canvas{width:100%;max-width:460px;height:auto;display:block;border-radius:12px;background:#07090f;box-shadow:0 14px 40px #0009;touch-action:none;cursor:pointer}.overlay{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:#080910bd;border-radius:12px;backdrop-filter:blur(3px)}.overlay.hidden{display:none}.card{background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:24px 28px;text-align:center;max-width:360px}.card h2{margin:0 0 6px;font-size:24px;color:var(--accent)}.card p{margin:7px 0;color:var(--dim);font-size:14px}.card p b{color:var(--ink)}.card .row{display:flex;gap:8px;justify-content:center;margin-top:16px;flex-wrap:wrap}.hint{text-align:center;color:var(--dim);font-size:12px;margin-top:12px;line-height:1.5}