:root {
    --cg: #00d09c;
    --clg: #e6f9f0;
    --cb: #5b58ff;
    --clb: #eef0ff;
    --tm: #475569;
    --tv: #334155;
    --tmut: #737373;
    --bdr: #e2e8f0;
}
body { background: #fff; font-family: 'Inter', sans-serif; }
.calc-container { max-width: 900px; margin: 60px auto 100px; padding: 0 20px; }
.calc-title { color: var(--tv); font-size: 1.8rem; font-weight: 700; margin-bottom: 24px; }
.calc-card { border: 1px solid var(--bdr); border-radius: 12px; background: #fff; padding: 40px; }
.calc-top { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 40px; }
.calc-left { flex: 1; max-width: 450px; }
.calc-right { flex: 1; display: flex; flex-direction: column; align-items: center; }
.calc-tabs { display: flex; gap: 16px; margin-bottom: 40px; flex-wrap: wrap; }
.calc-tab { padding: 8px 20px; border-radius: 20px; font-weight: 600; cursor: pointer; color: var(--tmut); transition: all .2s; font-size: .95rem; border: 1px solid transparent; }
.calc-tab.active { background: var(--clg); color: var(--cg); }
.calc-tab.blue.active { background: var(--clb); color: var(--cb); }
.range-group { margin-bottom: 40px; }
.range-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; }
.range-label { color: var(--tm); font-weight: 500; font-size: .95rem; }
.range-value-box { background: var(--clg); border-radius: 4px; padding: 4px 8px; display: flex; align-items: center; gap: 2px; }
.range-value-box.blue { background: var(--clb); }
.range-value-box .unit { color: var(--cg); font-weight: 600; font-size: .95rem; }
.range-value-box.blue .unit { color: var(--cb); }
.range-value-box input { border: none; background: transparent; color: var(--cg); font-weight: 700; font-size: 1.05rem; width: 80px; text-align: right; outline: none; font-family: 'Inter', sans-serif; }
.range-value-box.blue input { color: var(--cb); }
.range-value-box input.short { width: 50px; }
.range-value-box input::-webkit-outer-spin-button,
.range-value-box input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
input[type=range] { -webkit-appearance: none; width: 100%; height: 4px; background: var(--bdr); border-radius: 4px; outline: none; padding: 0; margin: 0; }
input[type=range]::-webkit-slider-thumb { -webkit-appearance: none; width: 20px; height: 20px; border-radius: 50%; background: #fff; cursor: pointer; box-shadow: 0 1px 4px rgba(0,0,0,.15); border: 1px solid #f1f5f9; transition: transform .1s; }
input[type=range]::-webkit-slider-thumb:hover { transform: scale(1.1); }
.chart-legend { display: flex; gap: 20px; margin-bottom: 20px; margin-top: 10px; flex-wrap: wrap; justify-content: center; }
.legend-item { display: flex; align-items: center; gap: 8px; color: var(--tmut); font-size: .85rem; font-weight: 500; }
.legend-dot { width: 24px; height: 8px; border-radius: 4px; }
.chart-container { width: 250px; height: 250px; }
.calc-bottom { display: flex; justify-content: space-between; align-items: flex-end; margin-top: 40px; }
.calc-results-col { width: 350px; }
.res-row { display: flex; justify-content: space-between; margin-bottom: 18px; align-items: center; }
.res-label { color: var(--tmut); font-weight: 500; font-size: .95rem; }
.res-val { color: var(--tv); font-weight: 600; font-size: 1.05rem; }
.res-row.total { margin-top: 24px; border-top: 1px solid var(--bdr); padding-top: 16px; }
.res-row.total .res-val { font-size: 1.15rem; font-weight: 700; color: var(--cg); }
.calc-action-col { margin-bottom: 6px; }
.invest-btn { background: var(--cg); color: #fff; border: none; padding: 12px 28px; border-radius: 6px; font-size: .95rem; font-weight: 700; cursor: pointer; transition: background .2s; text-transform: uppercase; letter-spacing: .5px; }
.invest-btn:hover { background: #00b889; }
.note-text { font-size: .8rem; color: var(--tmut); margin-top: 12px; line-height: 1.5; }
select.calc-select { border: 1px solid var(--bdr); border-radius: 6px; padding: 8px 12px; font-size: .9rem; color: var(--tv); font-family: 'Inter', sans-serif; outline: none; width: 100%; margin-top: 4px; }
@media (max-width: 768px) {
    .calc-top { flex-direction: column; }
    .calc-left { max-width: 100%; }
    .calc-right { margin-top: 32px; width: 100%; }
    .calc-bottom { flex-direction: column; }
    .calc-results-col { width: 100%; margin-bottom: 24px; }
    .chart-container { width: 200px; height: 200px; }
}