:root{--c-primary:#1d3658;--c-primary-light:#2c4a70;--c-primary-dark:#12223a;--c-secondary:#f0f4f8;--c-accent:#137fec;--c-accent-hover:#0b5cb5;--font-family:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;--font-size-base:14px;--font-size-h1:24px;--font-size-h2:20px;--font-size-h3:16px;--spacing-xs:4px;--spacing-sm:8px;--spacing-md:16px;--spacing-lg:24px;--spacing-xl:32px;--radius-md:8px;--radius-lg:12px;--sidebar-width:250px;--header-height:60px}body{background-color:var(--c-secondary);color:#333;font-family:var(--font-family);margin:0;padding:0}#rp-estimation-app a{color:var(--c-primary);text-decoration:none}#rp-estimation-app h1,#rp-estimation-app h2,#rp-estimation-app h3{color:var(--c-primary);font-family:var(--font-family);margin-top:0}.rp-card{background:#fff;border-radius:var(--radius-md);box-shadow:0 2px 4px rgba(0,0,0,.05);margin-bottom:var(--spacing-md);padding:var(--spacing-md)}.rp-btn-primary{background-color:var(--c-primary);border:none;border-radius:var(--radius-md);color:#fff;cursor:pointer;font-weight:500;padding:8px 16px;transition:background .2s}.rp-btn-primary:hover{background-color:var(--c-primary-light)}.rp-btn-secondary{background-color:#fff;border:1px solid #ddd;border-radius:var(--radius-md);color:var(--c-primary);cursor:pointer;font-weight:500;padding:8px 16px}.rp-btn-secondary:hover{background-color:#f9f9f9}