:root{--wh-red:#fe1e00;--wh-red-hover:#d91a00;--wh-white:#ffffff;--wh-text:#1f2733;--wh-text-muted:#5c6672;--wh-bg:#f4f5f7;--wh-surface:#ffffff;--wh-border:#dddddd;--wh-radius:15px;--wh-radius-sm:8px;--wh-font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif}body{margin:0;font-family:var(--wh-font);background:var(--wh-bg)}.wh-btn,body{color:var(--wh-text)}.wh-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 18px;border-radius:var(--wh-radius-sm);border:1px solid var(--wh-border);background:var(--wh-surface);font-size:15px;font-weight:600;cursor:pointer;text-decoration:none;transition:background .15s,color .15s,border-color .15s}.wh-btn--primary,.wh-btn:hover{background:var(--wh-red);border-color:var(--wh-red);color:var(--wh-white)}.wh-btn--primary:hover{background:var(--wh-red-hover);border-color:var(--wh-red-hover)}.wh-card{background:var(--wh-surface);border:1px solid var(--wh-border);border-radius:var(--wh-radius);padding:20px}