:root{--bg: #150f17;--panel: #271a26;--line: #43314a;--ink: #f3eaf0;--dim: #c1a8bc;--accent: #b05f8a}*{box-sizing:border-box}html,body{margin:0;height:100%}body{background:radial-gradient(900px 560px at 50% -8%,#241622,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:620px;padding:12px 12px 26px}.so-wrap{display:flex;flex-direction:column;align-items:center}.so-head{text-align:center;margin-bottom:4px}.so-head h1{margin:0;font-size:26px;letter-spacing:3px;font-weight:800;color:var(--accent)}.so-sub{margin:2px 0 0;color:var(--dim);font-size:13px;max-width:480px}.so-bar{display:flex;gap:8px;justify-content:center;flex-wrap:wrap;align-items:center;margin:9px 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.on{background:var(--accent);color:#1a0f16}.btn{background:var(--panel);border:1px solid var(--line);color:var(--ink);padding:7px 14px;border-radius:999px;font:700 13px system-ui;cursor:pointer}.btn:hover{border-color:var(--accent)}.so-status{text-align:center;min-height:20px;margin:6px 0;color:var(--dim);font-size:13px;font-weight:600}canvas{width:100%;max-width:560px;height:auto;display:block;border-radius:8px;background:#0e0c14;box-shadow:0 12px 34px #0000008c;touch-action:none;cursor:pointer}.so-help{text-align:center;color:var(--dim);font-size:12px;margin-top:10px;max-width:480px}.so-help b{color:var(--accent)}