:root{--bg: #0b1020;--panel: #141b30;--panel2: #1b2440;--line: #25304f;--ink: #e8edf7;--dim: #8d99b8;--up: #21d07a;--down: #ff5d6c;--gold: #f5c451;--accent: #4d8bff;--road: #202a45}*{box-sizing:border-box}html,body{margin:0;height:100%}body{background:radial-gradient(1200px 700px at 70% -10%,#16213f 0%,var(--bg) 60%);color:var(--ink);font:14px/1.4 Segoe UI,Roboto,system-ui,sans-serif;-webkit-font-smoothing:antialiased}#app{height:100%}b{font-weight:700}.up{color:var(--up)}.down{color:var(--down)}.screen{max-width:720px;margin:0 auto;padding:4vh 20px 40px;text-align:center}.light{font-size:56px;filter:drop-shadow(0 4px 12px rgba(33,208,122,.4))}.screen h1{font-size:40px;margin:4px 0 8px;letter-spacing:.5px}.screen .tag{color:var(--dim);max-width:560px;margin:0 auto 22px;font-size:15px}.modes{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}button.big{background:linear-gradient(180deg,#17b866,#12934f);color:#fff;border:0;cursor:pointer;border-radius:14px;padding:18px 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