:root{--tc-primary:#4f46e5;--tc-primary-light:#eef2ff;--tc-primary-hover:#4338ca;--tc-text:#1e293b;--tc-text-secondary:#475569;--tc-text-muted:#64748b;--tc-bg:#fff;--tc-bg-secondary:#f8fafc;--tc-border:#e2e8f0;--tc-border-light:#f1f5f9;--tc-shadow-sm:0 1px 3px #0000000f, 0 1px 2px #0000000a;--tc-shadow:0 2px 8px #0000000f, 0 1px 4px #0000000a;--tc-radius:var(--main-radius,.5rem);--tc-radius-lg:var(--main-radius-lg,.75rem);--tc-font-mono:var(--main-font-mono,"SF Mono", "Fira Code", monospace);--tc-transition:.2s ease;--tc-success:#10b981;--tc-warning:#f59e0b}._tc-container{gap:var(--main-space-4,1rem);flex-direction:column;max-width:680px;margin:0 auto;display:flex}._tc-hidden{display:none!important}._tc-main-card{background:var(--tc-bg);border-radius:var(--tc-radius-lg);padding:var(--main-space-5,1.25rem);box-shadow:var(--tc-shadow-sm);border-style:solid;border-width:1px;border-color:var(--tc-border)}._tc-calculator{gap:var(--main-space-5,1.25rem);margin-top:var(--main-space-4,1rem);flex-direction:column;display:flex}@media (max-width:768px){._tc-container{padding-left:1rem;padding-right:1rem}}._tc-tabs{background:var(--tc-bg);border-radius:var(--tc-radius-lg);box-shadow:var(--tc-shadow-sm);border-style:solid;border-width:1px;border-color:var(--tc-border);-webkit-overflow-scrolling:touch;scrollbar-width:none;gap:.25rem;padding:4px;display:flex;overflow-x:auto}._tc-tabs::-webkit-scrollbar{display:none}._tc-tab{border-radius:calc(var(--tc-radius-lg) - 4px);color:var(--tc-text-muted);cursor:pointer;transition:all var(--tc-transition);white-space:nowrap;background:0 0;border:none;flex:1;justify-content:center;align-items:center;gap:.375rem;padding:.5rem .875rem;font-size:.8125rem;font-weight:500;display:flex}._tc-tab:hover:not(._tc-tab-active){color:var(--tc-text);background:var(--tc-bg-secondary)}._tc-tab._tc-tab-active{background:var(--tc-primary);color:#fff;box-shadow:0 2px 8px #4f46e540}._tc-tab-icon{align-items:center;display:flex}._tc-tab-icon svg{width:14px;height:14px}@media (max-width:480px){._tc-tab{flex:none;padding:.4375rem .625rem;font-size:.75rem}._tc-tab-icon svg{width:12px;height:12px}}._tc-methods{margin-bottom:var(--main-space-2,.5rem);grid-template-columns:repeat(5,1fr);gap:.5rem;display:grid}._tc-method{border-style:solid;border-width:1px;border-color:var(--tc-border);background:var(--tc-bg);border-radius:var(--tc-radius);cursor:pointer;transition:all var(--tc-transition);color:var(--tc-text-muted);flex-direction:column;align-items:center;gap:.125rem;padding:.5rem .25rem;display:flex}._tc-method:hover:not(._tc-method-active){border-color:var(--tc-primary);color:var(--tc-primary);background:var(--tc-primary-light)}._tc-method._tc-method-active{border-color:var(--tc-primary);background:var(--tc-primary-light);color:var(--tc-primary);box-shadow:0 0 0 2px #4f46e526}._tc-method-label{font-size:.875rem;font-weight:700;font-family:var(--tc-font-mono)}._tc-method-desc{text-align:center;font-size:.625rem;font-weight:500;line-height:1.2}@media (max-width:540px){._tc-methods{grid-template-columns:repeat(3,1fr)}}@media (max-width:380px){._tc-methods{grid-template-columns:repeat(2,1fr)}._tc-method:last-child{grid-column:span 2}}._tc-input-section{gap:var(--main-space-3,.75rem);flex-direction:column;flex:1;min-width:0;display:flex}._tc-input-header{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:.75rem;display:flex}._tc-input-title{color:var(--tc-text);font-size:.9375rem;font-weight:600}._tc-selectors{align-items:center;gap:.5rem;display:flex}._tc-select{border-style:solid;border-width:1px;border-color:var(--tc-border);border-radius:var(--tc-radius);background:var(--tc-bg);color:var(--tc-text);cursor:pointer;transition:all var(--tc-transition);padding:.375rem .625rem;font-size:.8125rem}._tc-select:focus{border-color:var(--tc-primary);outline:none;box-shadow:0 0 0 2px #4f46e51a}._tc-inputs{flex-direction:column;gap:.75rem;min-height:120px;display:flex}._tc-input-group{align-items:center;gap:.75rem;display:flex}._tc-input-label{color:var(--tc-text-secondary);flex:0 0 100px;font-size:.8125rem;font-weight:500}._tc-input{border-style:solid;border-width:1.5px;border-color:var(--tc-border);border-radius:var(--tc-radius);background:var(--tc-bg);font-size:.9375rem;font-family:var(--tc-font-mono);color:var(--tc-text);transition:all var(--tc-transition);flex:1;padding:.5rem .75rem}._tc-input:focus{border-color:var(--tc-primary);outline:none;box-shadow:0 0 0 3px #4f46e51a}._tc-input::placeholder{color:var(--tc-text-muted)}._tc-input-unit{color:var(--tc-text-muted);flex:none;min-width:28px;font-size:.8125rem}._tc-actions{justify-content:flex-end;gap:.5rem;display:flex}._tc-btn{border-radius:var(--tc-radius);cursor:pointer;transition:all var(--tc-transition);border:none;align-items:center;gap:.375rem;padding:.4375rem .75rem;font-size:.8125rem;font-weight:500;display:inline-flex}._tc-btn-ghost{color:var(--tc-text-muted);background:0 0}._tc-btn-ghost:hover{color:var(--tc-primary);background:var(--tc-primary-light)}._tc-btn svg{width:14px;height:14px}@media (max-width:480px){._tc-input-header{flex-direction:column;align-items:flex-start}._tc-input-group{flex-wrap:wrap}._tc-input-label{flex:0 0 100%;margin-bottom:-.25rem}._tc-input{flex:1}}._tc-preview{background:var(--tc-bg-secondary);border-radius:var(--tc-radius);border-style:dashed;border-width:1px;border-color:var(--tc-border);flex:0 0 180px;justify-content:center;align-items:center;min-height:180px;padding:.75rem;display:flex}._tc-preview svg{width:100%;max-width:160px;height:100%;max-height:160px}._tc-preview-shape{fill:none;stroke:var(--tc-primary);stroke-width:2px}._tc-preview-right-angle{fill:none;stroke:var(--tc-text-muted);stroke-width:1px}._tc-preview-dim{stroke:var(--tc-text-muted);stroke-width:1px;stroke-dasharray:3 2}._tc-preview-label{font-size:11px;font-family:var(--tc-font-mono);fill:var(--tc-text-secondary);font-weight:600}._tc-preview-label-side{fill:var(--tc-primary)}._tc-preview-label-angle{fill:#dc2626}._tc-preview-dot{fill:var(--tc-primary)}._tc-calc-row{gap:var(--main-space-4,1rem);align-items:flex-start;display:flex}._tc-input-section{flex:1;min-width:0}@media (max-width:600px){._tc-calc-row{flex-direction:column}._tc-preview{flex:none;order:-1;width:100%;min-height:160px}._tc-preview svg{max-width:140px;max-height:140px}}._tc-results-section{padding-top:var(--main-space-4,1rem);border-top-style:solid;border-top-width:1px;border-top-color:var(--tc-border-light);min-height:100px}._tc-results-grid{grid-template-columns:repeat(3,1fr);gap:.75rem;display:grid}._tc-result-item{background:var(--tc-bg-secondary);border-radius:var(--tc-radius);border-style:solid;border-width:1px;border-color:var(--tc-border-light);flex-direction:column;align-items:center;gap:.25rem;padding:.75rem .5rem;display:flex}._tc-result-item._tc-result-highlight{background:var(--tc-primary-light);border-color:#4f46e533}._tc-result-label{color:var(--tc-text-muted);text-transform:uppercase;letter-spacing:.05em;font-size:.6875rem;font-weight:500}._tc-result-value{font-size:1.125rem;font-weight:700;font-family:var(--tc-font-mono);color:var(--tc-text);word-break:break-all;line-height:1.2}._tc-result-item._tc-result-highlight ._tc-result-value{color:var(--tc-primary)}._tc-result-unit{color:var(--tc-text-muted);font-size:.75rem;font-weight:500}._tc-steps-section{margin-top:var(--main-space-3,.75rem)}._tc-steps-toggle{background:var(--tc-bg-secondary);border-style:solid;border-width:1px;border-color:var(--tc-border);border-radius:var(--tc-radius);width:100%;color:var(--tc-text-secondary);cursor:pointer;transition:all var(--tc-transition);align-items:center;gap:.5rem;padding:.625rem 1rem;font-size:.8125rem;font-weight:500;display:flex}._tc-steps-toggle:hover{background:var(--tc-primary-light);border-color:var(--tc-primary);color:var(--tc-primary)}._tc-steps-toggle._tc-steps-open{border-bottom-color:#0000;border-bottom-right-radius:0;border-bottom-left-radius:0}._tc-steps-toggle svg{width:14px;height:14px}._tc-steps-chevron{align-items:center;margin-left:auto;display:flex}._tc-steps-chevron-up,._tc-steps-toggle._tc-steps-open ._tc-steps-chevron-down{display:none}._tc-steps-toggle._tc-steps-open ._tc-steps-chevron-up{display:block}._tc-steps-content{background:var(--tc-bg-secondary);border-style:solid;border-width:1px;border-color:var(--tc-border);border-radius:0 0 var(--tc-radius) var(--tc-radius);border-top:none;padding:1rem}._tc-step{gap:.75rem;padding:.5rem 0;display:flex}._tc-step:not(:last-child){border-bottom-style:dashed;border-bottom-width:1px;border-bottom-color:var(--tc-border)}._tc-step-number{background:var(--tc-primary);color:#fff;border-radius:50%;flex:0 0 24px;justify-content:center;align-items:center;height:24px;font-size:.75rem;font-weight:600;display:flex}._tc-step-content{flex:1;min-width:0}._tc-step-title{color:var(--tc-text);margin-bottom:.25rem;font-size:.8125rem;font-weight:600}._tc-step-formula{font-family:var(--tc-font-mono);color:var(--tc-text-secondary);word-break:break-all;font-size:.8125rem}._tc-step-formula strong{color:var(--tc-primary)}._tc-results-empty{color:var(--tc-text-muted);text-align:center;flex-direction:column;justify-content:center;align-items:center;padding:2rem 1rem;display:flex}._tc-results-empty svg{opacity:.5;width:40px;height:40px;margin-bottom:.75rem}._tc-results-empty-text{font-size:.875rem}@media (max-width:540px){._tc-results-grid{grid-template-columns:repeat(2,1fr)}}@media (max-width:380px){._tc-results-grid{grid-template-columns:1fr}._tc-result-item{flex-direction:row;justify-content:space-between;padding:.625rem .75rem}._tc-result-label{order:1}._tc-result-value{order:2}._tc-result-unit{order:3}}