:root{--tc-primary:#6366f1;--tc-primary-hover:#4f46e5;--tc-primary-light:#6366f114;--tc-primary-medium:#6366f126;--tc-primary-gradient:linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);--tc-secondary:#10b981;--tc-secondary-light:#10b9811a;--tc-text:#1e293b;--tc-text-muted:#64748b;--tc-text-light:#94a3b8;--tc-bg:#fff;--tc-bg-hover:#f8fafc;--tc-bg-alt:#f1f5f9;--tc-bg-alt-2:#e2e8f0;--tc-border:#e2e8f0;--tc-border-light:#f1f5f9;--tc-shadow:0 1px 3px #0000000a, 0 1px 2px #00000005;--tc-shadow-md:0 4px 12px #0000000f, 0 2px 4px #0000000a;--tc-shadow-lg:0 10px 32px #00000014, 0 4px 8px #0000000a;--tc-shadow-hover:0 8px 24px #6366f11f;--tc-radius:.625rem;--tc-radius-lg:1rem;--tc-radius-xl:1.25rem;--tc-radius-full:9999px;--tc-transition:.2s cubic-bezier(.4, 0, .2, 1);--tc-transition-fast:.15s cubic-bezier(.4, 0, .2, 1)}._tc-container{flex-direction:column;gap:1.25rem;max-width:680px;margin:0 auto;display:flex}@media (max-width:767px){._tc-container{gap:1rem;max-width:480px;padding-left:1rem;padding-right:1rem}}._tc-card{background:var(--tc-bg);border-radius:var(--tc-radius-xl);box-shadow:var(--tc-shadow-md);border-style:solid;border-width:2px;border-color:var(--tc-border);transition:box-shadow var(--tc-transition), border-color var(--tc-transition);flex-direction:column;gap:1.25rem;padding:2rem 1.75rem;display:flex}._tc-card:focus-within{border-color:var(--tc-primary);box-shadow:var(--tc-shadow-hover)}._tc-converter-row{align-items:center;gap:1.25rem;display:flex}._tc-input-group{flex-direction:column;flex:1;gap:.625rem;min-width:0;display:flex}._tc-label-row{justify-content:space-between;align-items:center;gap:.5rem;display:flex}._tc-label{color:var(--tc-text-muted);text-transform:uppercase;letter-spacing:.08em;transition:color var(--tc-transition);align-items:center;gap:.5rem;font-size:.6875rem;font-weight:700;display:flex}._tc-label:before{content:"";background:var(--tc-text-muted);width:6px;height:6px;transition:background var(--tc-transition);border-radius:50%}._tc-input-group:focus-within ._tc-label{color:var(--tc-primary)}._tc-input-group:focus-within ._tc-label:before{background:var(--tc-primary)}._tc-unit-dropdown{position:relative}._tc-unit-trigger{border-radius:var(--tc-radius-full);background:var(--tc-bg-alt);color:var(--tc-text-muted);text-transform:uppercase;letter-spacing:.08em;cursor:pointer;transition:all var(--tc-transition);white-space:nowrap;border:none;align-items:center;gap:.375rem;padding:.375rem .625rem;font-size:.6875rem;font-weight:700;display:inline-flex}._tc-unit-trigger:before{content:"";background:var(--tc-text-muted);width:6px;height:6px;transition:background var(--tc-transition);border-radius:50%}._tc-unit-trigger:hover{background:var(--tc-bg-alt-2,var(--tc-bg-alt));color:var(--tc-text)}._tc-unit-trigger:hover:before{background:var(--tc-primary)}._tc-unit-dropdown.open ._tc-unit-trigger{background:var(--tc-primary-light);color:var(--tc-primary)}._tc-unit-dropdown.open ._tc-unit-trigger:before{background:var(--tc-primary)}._tc-unit-trigger svg{opacity:.6;width:10px;height:10px;transition:transform var(--tc-transition)}._tc-unit-dropdown.open ._tc-unit-trigger svg{opacity:1;transform:rotate(180deg)}._tc-unit-trigger-text{text-overflow:ellipsis;max-width:120px;overflow:hidden}._tc-unit-menu{background:var(--tc-bg);border-radius:var(--tc-radius-lg);border-style:solid;border-width:1px;border-color:var(--tc-border);min-width:180px;max-width:240px;box-shadow:var(--tc-shadow-lg,0 10px 25px #00000026);z-index:100;animation:.2s tc-dropdown-in;position:absolute;top:calc(100% + 6px);left:0;overflow:hidden}@keyframes tc-dropdown-in{0%{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:translateY(0)}}._tc-unit-menu.hidden{display:none}._tc-unit-search-wrap{border-bottom-style:solid;border-bottom-width:1px;border-bottom-color:var(--tc-border);background:var(--tc-bg-alt);padding:.625rem}._tc-unit-search{border-radius:var(--tc-radius-full);border-style:solid;border-width:1px;border-color:var(--tc-border);background:var(--tc-bg);width:100%;color:var(--tc-text);padding:.5rem .75rem;font-size:.8125rem;transition:border-color .15s,box-shadow .15s}._tc-unit-search:focus{border-color:var(--tc-primary);box-shadow:0 0 0 3px var(--tc-primary-light);outline:none}._tc-unit-search::placeholder{color:var(--tc-text-light)}._tc-unit-no-results{text-align:center;color:var(--tc-text-muted);padding:1rem;font-size:.8125rem}._tc-unit-no-results.hidden{display:none}._tc-unit-options{max-height:240px;padding:.375rem 0;overflow-y:auto}._tc-unit-option{width:100%;color:var(--tc-text);text-align:left;cursor:pointer;background:0 0;border:none;align-items:center;gap:.5rem;padding:.625rem .875rem;font-size:.8125rem;font-weight:500;text-decoration:none;transition:background .15s,color .15s;display:flex}._tc-unit-option:hover{background:var(--tc-bg-hover,var(--tc-bg-alt))}._tc-unit-option.selected{background:var(--tc-primary-light);color:var(--tc-primary);font-weight:700}._tc-unit-option-symbol{background:var(--tc-bg-alt);min-width:32px;color:var(--tc-text-muted);border-radius:var(--tc-radius,6px);justify-content:center;align-items:center;padding:.125rem .375rem;font-size:.6875rem;font-weight:700;display:inline-flex}._tc-unit-option.selected ._tc-unit-option-symbol{background:var(--tc-primary);color:#fff}._tc-input-wrapper{background:var(--tc-bg-alt);border-radius:var(--tc-radius-lg);transition:border-color var(--tc-transition), box-shadow var(--tc-transition), background var(--tc-transition);border:2px 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0;flex-shrink:0;justify-content:center;align-items:center;gap:.375rem;padding:.4375rem .75rem;font-size:.75rem;font-weight:600;display:flex}._tc-copy-inline:hover{color:var(--tc-primary);background:var(--tc-primary-light);border-color:var(--tc-primary)}._tc-copy-inline:active{background:var(--tc-primary-medium)}._tc-copy-inline.copied{color:#059669;background:var(--tc-secondary-light);border-color:#10b981}._tc-copy-inline svg{flex-shrink:0;width:12px;height:12px}._tc-swap{background:var(--tc-primary-gradient);color:#fff;cursor:pointer;width:44px;height:44px;transition:box-shadow var(--tc-transition), opacity var(--tc-transition);border:none;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;display:flex;box-shadow:0 4px 12px #6366f140}._tc-swap:hover{box-shadow:0 6px 20px #6366f159}._tc-swap:active{opacity:.9}._tc-swap svg{width:18px;height:18px}@media (max-width:767px){._tc-card{border-radius:var(--tc-radius-lg);padding:1.25rem}._tc-converter-row{flex-direction:column;gap:1rem}._tc-input-group{width:100%}._tc-input{padding:.875rem 1rem;font-size:1.5rem}._tc-unit{min-width:42px;padding:.875rem;font-size:.875rem}._tc-swap{width:40px;height:40px;margin:-.375rem 0;transform:rotate(90deg)}._tc-swap svg{width:16px;height:16px}}._tc-reference{background:var(--tc-bg);border-radius:var(--tc-radius-xl);box-shadow:var(--tc-shadow);border-style:solid;border-width:1px;border-color:var(--tc-border);padding:1.25rem 1.5rem}._tc-ref-header{align-items:center;gap:.5rem;margin-bottom:1rem;display:flex}._tc-ref-header:before{content:"";background:var(--tc-primary-gradient);border-radius:2px;width:12px;height:3px}._tc-ref-title{color:var(--tc-primary);text-transform:uppercase;letter-spacing:.1em;margin:0;font-size:.6875rem;font-weight:800}._tc-ref-grid{background:var(--tc-bg-alt);border-radius:var(--tc-radius-lg);grid-template-columns:1fr 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