.oac-calculator{--oac-ink: #16211c;--oac-soft: #4a5b52;--oac-faint: #6f7f76;--oac-paper: #f1efe7;--oac-surface: #fbfaf5;--oac-white: #fff;--oac-rule: #d6d2c4;--oac-forest: #14453d;--oac-forest-mid: #2e6e60;--oac-forest-pale: #e3e9e4;--oac-brass: #a8811f;--oac-brass-pale: #f2e9d3;--oac-brick: #a8442a;margin:var(--space-4) 0;overflow:hidden;border:1px solid var(--oac-rule);border-top:6px solid var(--oac-forest);border-radius:12px;background:var(--oac-surface);color:var(--oac-ink);box-shadow:0 12px 34px #16211c14}.oac-calculator *,.oac-calculator *:before,.oac-calculator *:after{box-sizing:border-box}.oac-calculator__header{padding:28px 28px 24px;background:var(--oac-paper)}.oac-calculator__eyebrow{margin:0 0 7px;color:var(--oac-brass);font:600 11px/1.3 var(--font-mono);letter-spacing:.12em;text-transform:uppercase}.oac-calculator__header h2{margin:0;color:var(--oac-ink);font-size:clamp(27px,4vw,38px)}.oac-calculator__header>p:last-child{max-width:68ch;margin:9px 0 0;color:var(--oac-soft);font-size:15px;line-height:1.6}.oac-calculator__body{padding:0 28px 28px;background:var(--oac-surface)}.oac-calculator__footer{display:grid;grid-template-columns:auto 1fr;gap:12px;align-items:baseline;padding:14px 28px;border-top:1px solid var(--oac-rule);background:var(--oac-paper)}.oac-calculator__footer span{color:var(--oac-forest);font:600 11px/1.3 var(--font-mono);letter-spacing:.08em;text-transform:uppercase}.oac-calculator__footer p{margin:0;color:var(--oac-faint);font-size:12px;line-height:1.5}.oac-calc-layout{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:26px;align-items:start;padding-top:26px}.oac-calc-panel{min-width:0}.oac-calc-panel__title{margin:0 0 15px;color:var(--oac-forest);font:600 12px/1.3 var(--font-mono);letter-spacing:.08em;text-transform:uppercase}.oac-calc-fields{display:grid;gap:14px}.oac-calc-field{display:grid;gap:5px}.oac-calc-field[hidden]{display:none}.oac-calc-field label{color:var(--oac-ink);font-size:13px;font-weight:600;line-height:1.35}.oac-calc-field small{color:var(--oac-faint);font-size:11.5px;line-height:1.4}.oac-calc-field__input{position:relative;min-width:0}.oac-calc-field__input input,.oac-calc-field__input select{width:100%;min-width:0;min-height:46px;padding:10px 44px 10px 12px;border:1px solid #c5c1b5;border-radius:7px;background:var(--oac-white);color:var(--oac-ink);font:500 16px/1.3 var(--font-mono);font-variant-numeric:tabular-nums}.oac-calc-field__input select{appearance:auto;padding-right:12px}.oac-calc-field__input input:focus,.oac-calc-field__input select:focus{border-color:var(--oac-forest);outline:3px solid var(--oac-forest-pale)}.oac-calc-field__unit{position:absolute;top:50%;right:12px;transform:translateY(-50%);color:var(--oac-faint);font:500 12px/1 var(--font-mono);pointer-events:none}.oac-calc-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}.oac-calc-button{min-height:44px;padding:10px 16px;border:1px solid var(--oac-forest);border-radius:7px;background:var(--oac-forest);color:var(--oac-white);cursor:pointer;font:600 14px/1.2 var(--font-sans)}.oac-calc-button:hover{background:#0e332c}.oac-calc-button--secondary{background:transparent;color:var(--oac-forest)}.oac-calc-button--secondary:hover{background:var(--oac-forest-pale)}.oac-calc-result{min-width:0;padding:20px;border:1px solid var(--oac-rule);border-radius:10px;background:var(--oac-white)}.oac-calc-result__hero{min-width:0;padding-bottom:18px;border-bottom:1px solid var(--oac-rule)}.oac-calc-result__hero span{display:block;color:var(--oac-soft);font-size:12px}.oac-calc-result__hero strong{display:block;max-width:100%;margin-top:4px;color:var(--oac-forest);font:600 clamp(32px,6vw,56px)/1 var(--font-serif);font-variant-numeric:tabular-nums;white-space:nowrap;overflow-wrap:normal;word-break:normal}.oac-calc-result__hero small{display:block;margin-top:7px;color:var(--oac-faint);font-size:11.5px}.oac-calc-result__grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1px;margin:14px 0;overflow:hidden;border:1px solid var(--oac-rule);background:var(--oac-rule)}.oac-calc-result__grid>div{min-width:0;padding:12px;background:var(--oac-surface)}.oac-calc-result__grid span{display:block;color:var(--oac-faint);font-size:10.5px;line-height:1.35}.oac-calc-result__grid strong{display:block;max-width:100%;margin-top:4px;color:var(--oac-ink);font:500 16px/1.25 var(--font-mono);font-variant-numeric:tabular-nums;white-space:nowrap;overflow-wrap:normal;word-break:normal}.oac-calc-verdict{margin:14px 0 0;padding:12px 14px;border-left:3px solid var(--oac-brass);background:var(--oac-brass-pale);color:var(--oac-ink);font-size:13px;line-height:1.5}.oac-calc-verdict strong{color:var(--oac-forest)}.oac-calc-composition{margin-top:16px}.oac-calc-composition__bar{display:flex;height:12px;overflow:hidden;border-radius:999px;background:var(--oac-rule)}.oac-calc-composition__bar span:nth-child(1){background:var(--oac-forest)}.oac-calc-composition__bar span:nth-child(2){background:var(--oac-brass)}.oac-calc-composition__bar span:nth-child(3){background:var(--oac-soft)}.oac-calc-composition__legend{display:flex;flex-wrap:wrap;gap:5px 15px;margin-top:8px;color:var(--oac-faint);font-size:10.5px}.oac-calc-composition__legend i{display:inline-block;width:8px;height:8px;margin-right:5px;border-radius:50%}.oac-calc-composition__legend span:nth-child(1) i{background:var(--oac-forest)}.oac-calc-composition__legend span:nth-child(2) i{background:var(--oac-brass)}.oac-calc-composition__legend span:nth-child(3) i{background:var(--oac-soft)}.oac-calc-scenarios{margin-top:18px}.oac-calc-scenarios h3{margin:0 0 8px;color:var(--oac-ink);font:600 15px/1.3 var(--font-sans)}.oac-calc-scenarios__grid{display:grid;grid-template-columns:repeat(3,1fr);gap:7px}.oac-calc-scenario{padding:10px;border:1px solid var(--oac-rule);border-radius:7px;background:var(--oac-surface);text-align:center}.oac-calc-scenario[aria-current=true]{border-color:var(--oac-forest);background:var(--oac-forest-pale)}.oac-calc-scenario span{display:block;color:var(--oac-faint);font-size:10px}.oac-calc-scenario strong{display:block;margin-top:3px;color:var(--oac-forest);font:500 14px/1.25 var(--font-mono);white-space:nowrap}.oac-calc-scenario small{display:block;margin-top:3px;color:var(--oac-soft);font-size:9.5px}.oac-calc-note{margin:16px 0 0;color:var(--oac-faint);font-size:11.5px;line-height:1.55}@media (max-width: 760px){.oac-calculator__header{padding:22px 18px 20px}.oac-calculator__body{padding:0 18px 20px}.oac-calculator__footer{grid-template-columns:1fr;gap:4px;padding:13px 18px}.oac-calc-layout{grid-template-columns:1fr;gap:22px;padding-top:20px}}@media (max-width: 430px){.oac-calc-result{padding:15px}.oac-calc-result__hero strong{font-size:clamp(27px,8.2vw,36px)}.oac-calc-result__grid,.oac-calc-scenarios__grid{grid-template-columns:1fr}.oac-calc-scenario{display:grid;grid-template-columns:1fr auto auto;gap:8px;align-items:center;text-align:left}}