:root{--bg: #12101f;--bg-card: #1d1a30;--ink: #f2f0ff;--muted: #9a94c2;--accent: #c8f542;--accent-ink: #1a2004;--know: #c8f542;--no: #363252;--warn: #ffb35c;--radius: 20px}*{box-sizing:border-box}html,body{margin:0;padding:0}body{background:radial-gradient(1200px 800px at 70% -10%,#241f45 0%,var(--bg) 55%);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;min-height:100vh}.shell{max-width:640px;margin:0 auto;padding:20px 20px 60px;display:flex;flex-direction:column;min-height:100vh}.topbar{display:flex;justify-content:space-between;align-items:center;padding:4px 2px 28px}.logo{font-size:26px;font-weight:800;letter-spacing:-.5px}.logo-up{color:var(--accent)}.lang-select{font-size:13px;color:var(--muted);background:transparent;border:1px solid #35315a;border-radius:999px;padding:4px 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