:root{--bg:#0b0f14;--fg:#e6eef8;--muted:#9aa9b7}[data-theme=light]{--bg:#fff;--fg:#0b1220;--muted:#556374}body{background:var(--bg);color:var(--fg);font-family:Inter,system-ui,sans-serif;margin:0;padding:0}.container{max-width:1100px;margin:0 auto;padding:24px}.button{background:#2b7cff;color:#fff;padding:8px 12px;border-radius:8px;text-decoration:none;display:inline-block}.card{background:hsla(0,0%,100%,.03);padding:16px;border-radius:10px;margin-bottom:12px}.header{display:flex;align-items:center;justify-content:space-between;padding:12px;border-bottom:1px solid hsla(0,0%,100%,.03)}.lang-toggle,.theme-toggle{margin-left:8px}