:root{--prc-primary:#8b5cf6;--prc-primary-hover:#7c3aed;--prc-primary-light:#8b5cf614;--prc-primary-medium:#8b5cf626;--prc-text:#0f172a;--prc-text-secondary:#475569;--prc-text-muted:#64748b;--prc-text-light:#94a3b8;--prc-bg:#fff;--prc-bg-secondary:#f8fafc;--prc-bg-tertiary:#f1f5f9;--prc-bg-hover:#e2e8f0;--prc-border:#e2e8f0;--prc-border-strong:#cbd5e1;--prc-input-bg:#f8fafc;--prc-input-border:#e2e8f0;--prc-input-border-hover:#cbd5e1;--prc-input-border-focus:#8b5cf6;--prc-result-bg:linear-gradient(135deg, #faf5ff 0%, #f3e8ff 100%);--prc-result-text:#7c3aed;--prc-result-border:#8b5cf633;--prc-success:#10b981;--prc-success-bg:#10b9811a;--prc-error:#ef4444;--prc-error-bg:#ef44441a;--prc-shadow-sm:0 1px 2px #0000000a;--prc-shadow:0 1px 3px #00000014, 0 1px 2px #0000000a;--prc-shadow-md:0 4px 6px -1px #00000014, 0 2px 4px -1px #0000000a;--prc-shadow-lg:0 10px 15px -3px #00000014, 0 4px 6px -2px #0000000a;--prc-shadow-focus:0 0 0 3px #8b5cf626;--prc-radius-sm:8px;--prc-radius:12px;--prc-radius-lg:16px;--prc-radius-xl:20px;--prc-radius-full:9999px;--prc-transition:.2s ease;--prc-transition-fast:.15s ease}._prc-container{flex-direction:column;gap:1rem;max-width:600px;margin:0 auto;display:flex}._prc-main-card{background:var(--prc-bg);border-radius:var(--prc-radius-xl);border-style:solid;border-width:1px;border-color:var(--prc-border);box-shadow:var(--prc-shadow-md);overflow:hidden}._prc-mode{padding:1.5rem}._prc-hidden{display:none!important}@media (max-width:768px){._prc-container{padding-left:1rem;padding-right:1rem}._prc-mode{padding:1rem}}._prc-tabs{background:var(--prc-bg);border-radius:var(--prc-radius-lg);border-style:solid;border-width:1px;border-color:var(--prc-border);box-shadow:var(--prc-shadow);gap:.5rem;padding:.5rem;display:flex}._prc-tab{border-radius:var(--prc-radius);color:var(--prc-text-muted);cursor:pointer;transition:all var(--prc-transition-fast);background:0 0;border:none;flex:1;justify-content:center;align-items:center;gap:.5rem;padding:.75rem 1rem;font-size:.875rem;font-weight:500;display:flex}._prc-tab:hover{background:var(--prc-bg-tertiary);color:var(--prc-text-secondary)}._prc-tab._prc-active{background:var(--prc-primary);color:#fff;box-shadow:var(--prc-shadow)}._prc-tab svg{flex-shrink:0;width:16px;height:16px}@media (max-width:640px){._prc-tabs{gap:.25rem;padding:.375rem}._prc-tab{flex-direction:column;gap:.25rem;padding:.625rem .5rem;font-size:.8125rem}._prc-tab svg{width:18px;height:18px}}._prc-input-section{flex-direction:column;gap:1rem;display:flex}._prc-input-row{align-items:flex-end;gap:.75rem;display:flex}._prc-input-row-single{justify-content:center}._prc-input-group{flex-direction:column;flex:1;gap:.375rem;display:flex}._prc-input-group-wide{flex:1.5}._prc-input-group-full{max-width:200px}._prc-label{color:var(--prc-text-muted);text-transform:uppercase;letter-spacing:.03em;font-size:.75rem;font-weight:600}._prc-input{background:var(--prc-input-bg);border-style:solid;border-width:2px;border-color:var(--prc-input-border);border-radius:var(--prc-radius);width:100%;font-size:1.25rem;font-weight:600;font-family:var(--main-font-mono);color:var(--prc-text);text-align:center;transition:all var(--prc-transition-fast);padding:.75rem 1rem}._prc-input::placeholder{color:var(--prc-text-light);font-weight:400}._prc-input:hover{border-color:var(--prc-input-border-hover)}._prc-input:focus{border-color:var(--prc-input-border-focus);background:var(--prc-bg);box-shadow:var(--prc-shadow-focus);outline:none}._prc-input::-webkit-outer-spin-button{-webkit-appearance:none;margin:0}._prc-input::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}._prc-input[type=number]{-moz-appearance:textfield}._prc-swap-btn{background:var(--prc-bg-tertiary);border-radius:var(--prc-radius-full);width:40px;height:40px;color:var(--prc-text-muted);cursor:pointer;transition:all var(--prc-transition-fast);border:none;flex-shrink:0;justify-content:center;align-items:center;margin-bottom:.25rem;display:flex}._prc-swap-btn:hover{background:var(--prc-primary-light);color:var(--prc-primary)}._prc-swap-btn svg{width:16px;height:16px}._prc-root-symbol{color:var(--prc-primary);flex-shrink:0;justify-content:center;align-items:center;margin-bottom:.25rem;font-size:2rem;font-weight:300;display:flex}._prc-presets{flex-wrap:wrap;align-items:center;gap:.5rem;display:flex}._prc-presets-label{color:var(--prc-text-muted);font-size:.75rem;font-weight:500}._prc-preset{background:var(--prc-bg-tertiary);border-radius:var(--prc-radius-full);color:var(--prc-text-secondary);cursor:pointer;transition:all var(--prc-transition-fast);border:none;padding:.375rem .75rem;font-size:.8125rem;font-weight:500}._prc-preset:hover{background:var(--prc-primary-light);color:var(--prc-primary)}._prc-power2-toggle{gap:.5rem;margin-bottom:1rem;display:flex}._prc-power2-btn{background:var(--prc-bg-tertiary);border-radius:var(--prc-radius);color:var(--prc-text-muted);cursor:pointer;transition:all var(--prc-transition-fast);border:none;flex:1;padding:.625rem 1rem;font-size:.875rem;font-weight:500}._prc-power2-btn:hover{background:var(--prc-bg-hover);color:var(--prc-text-secondary)}._prc-power2-btn._prc-active{background:var(--prc-primary-medium);color:var(--prc-primary)}@media (max-width:640px){._prc-input-group-wide{flex:1.2}._prc-swap-btn{width:36px;height:36px}._prc-root-symbol{font-size:1.5rem}._prc-input{padding:.625rem .75rem;font-size:1.125rem}._prc-presets{justify-content:center}}._prc-result-section{padding:0 1.5rem 1.5rem}._prc-result-card{background:var(--prc-result-bg);border-radius:var(--prc-radius-lg);border-style:solid;border-width:1px;border-color:var(--prc-result-border);text-align:center;padding:1.25rem}._prc-formula{font-size:1rem;font-family:var(--main-font-mono);color:var(--prc-text-secondary);margin-bottom:.5rem}._prc-result-value{font-size:2rem;font-weight:700;font-family:var(--main-font-mono);color:var(--prc-result-text);word-break:break-all}._prc-result-value._prc-error{color:var(--prc-error);font-size:1rem;font-weight:500}@media (max-width:640px){._prc-result-section{padding:0 1rem 1rem}._prc-result-card{padding:1rem}._prc-result-value{font-size:1.5rem}}._prc-options{border-top-style:solid;border-top-width:1px;border-top-color:var(--prc-border)}._prc-options-toggle{width:100%;color:var(--prc-text-muted);cursor:pointer;transition:all var(--prc-transition-fast);background:0 0;border:none;justify-content:center;align-items:center;gap:.5rem;padding:.875rem 1.5rem;font-size:.8125rem;font-weight:500;display:flex}._prc-options-toggle:hover{background:var(--prc-bg-secondary);color:var(--prc-text-secondary)}._prc-options-toggle svg{width:14px;height:14px}._prc-toggle-icon{transition:transform var(--prc-transition-fast)}._prc-options-toggle._prc-expanded ._prc-toggle-icon{transform:rotate(180deg)}._prc-options-content{flex-direction:column;gap:.75rem;padding:0 1.5rem 1.25rem;display:flex}._prc-option-row{justify-content:space-between;align-items:center;gap:1rem;display:flex}._prc-option-label{color:var(--prc-text-secondary);cursor:pointer;align-items:center;gap:.5rem;font-size:.875rem;display:flex}._prc-option-label input[type=checkbox]{width:16px;height:16px;accent-color:var(--prc-primary);cursor:pointer}._prc-select{background:var(--prc-input-bg);border-style:solid;border-width:1px;border-color:var(--prc-input-border);border-radius:var(--prc-radius-sm);color:var(--prc-text);cursor:pointer;transition:all var(--prc-transition-fast);padding:.375rem .75rem;font-size:.875rem}._prc-select:hover{border-color:var(--prc-input-border-hover)}._prc-select:focus{border-color:var(--prc-input-border-focus);outline:none}@media (max-width:640px){._prc-options-content{padding:0 1rem 1rem}._prc-option-row{flex-direction:column;align-items:flex-start;gap:.5rem}}._prc-power2-table{background:var(--prc-bg);border-radius:var(--prc-radius-lg);border-style:solid;border-width:1px;border-color:var(--prc-border);box-shadow:var(--prc-shadow);overflow:hidden}._prc-table-header{background:var(--prc-bg-secondary);border-bottom-style:solid;border-bottom-width:1px;border-bottom-color:var(--prc-border);color:var(--prc-text-muted);text-transform:uppercase;letter-spacing:.03em;align-items:center;gap:.5rem;padding:.875rem 1.25rem;font-size:.8125rem;font-weight:600;display:flex}._prc-table-header svg{width:16px;height:16px;color:var(--prc-primary)}._prc-table-grid{grid-template-columns:repeat(4,1fr);min-height:200px;max-height:280px;display:grid;overflow-y:auto}._prc-table-item{border-bottom-style:solid;border-bottom-width:1px;border-bottom-color:var(--prc-border);border-right-style:solid;border-right-width:1px;border-right-color:var(--prc-border);cursor:pointer;transition:all var(--prc-transition-fast);justify-content:space-between;align-items:center;padding:.625rem .875rem;display:flex}._prc-table-item:nth-child(4n){border-right:none}._prc-table-item:hover{background:var(--prc-primary-light)}._prc-table-item._prc-highlight{background:var(--prc-primary-medium)}._prc-table-power{color:var(--prc-text-muted);font-size:.75rem;font-weight:500}._prc-table-value{font-size:.8125rem;font-weight:600;font-family:var(--main-font-mono);color:var(--prc-text)}@media (max-width:768px){._prc-table-grid{grid-template-columns:repeat(3,1fr)}._prc-table-item:nth-child(4n){border-right-style:solid;border-right-width:1px;border-right-color:var(--prc-border)}._prc-table-item:nth-child(3n){border-right:none}}@media (max-width:480px){._prc-table-grid{grid-template-columns:repeat(2,1fr)}._prc-table-item:nth-child(3n){border-right-style:solid;border-right-width:1px;border-right-color:var(--prc-border)}._prc-table-item:nth-child(2n){border-right:none}}._prc-history-card{background:var(--prc-bg);border-radius:var(--prc-radius-lg);border-style:solid;border-width:1px;border-color:var(--prc-border);box-shadow:var(--prc-shadow);overflow:hidden}._prc-history-toggle{cursor:pointer;width:100%;transition:all var(--prc-transition-fast);background:0 0;border:none;justify-content:space-between;align-items:center;padding:.875rem 1.25rem;display:flex}._prc-history-toggle:hover{background:var(--prc-bg-secondary)}._prc-toggle-left{color:var(--prc-text-secondary);align-items:center;gap:.5rem;font-size:.875rem;font-weight:500;display:flex}._prc-toggle-left svg{width:16px;height:16px;color:var(--prc-primary)}._prc-history-count{background:var(--prc-primary-light);border-radius:var(--prc-radius-full);color:var(--prc-primary);padding:.125rem .5rem;font-size:.75rem;font-weight:600}._prc-history-count:empty{display:none}._prc-history-toggle ._prc-toggle-icon{color:var(--prc-text-muted);transition:transform var(--prc-transition-fast)}._prc-history-toggle._prc-expanded ._prc-toggle-icon{transform:rotate(180deg)}._prc-history-content{border-top-style:solid;border-top-width:1px;border-top-color:var(--prc-border)}._prc-history-list{max-height:240px;overflow-y:auto}._prc-history-item{border-bottom-style:solid;border-bottom-width:1px;border-bottom-color:var(--prc-border);cursor:pointer;transition:all var(--prc-transition-fast);justify-content:space-between;align-items:center;padding:.75rem 1.25rem;display:flex}._prc-history-item:last-child{border-bottom:none}._prc-history-item:hover{background:var(--prc-bg-secondary)}._prc-history-formula{font-size:.875rem;font-family:var(--main-font-mono);color:var(--prc-text-secondary)}._prc-history-result{font-size:.875rem;font-weight:600;font-family:var(--main-font-mono);color:var(--prc-primary)}._prc-history-empty{text-align:center;color:var(--prc-text-muted);padding:1.5rem;font-size:.875rem}._prc-clear-history{background:var(--prc-bg-secondary);border:none;border-top:1px solid;border-top-color:var(--prc-border);width:100%;color:var(--prc-text-muted);cursor:pointer;transition:all var(--prc-transition-fast);justify-content:center;align-items:center;gap:.375rem;padding:.75rem;font-size:.8125rem;font-weight:500;display:flex}._prc-clear-history:hover{background:var(--prc-error-bg);color:var(--prc-error)}._prc-clear-history svg{width:12px;height:12px}@media (max-width:640px){._prc-history-item{flex-direction:column;align-items:flex-start;gap:.25rem}}