:root{color-scheme:light;--paper:#f5f3ec;--ink:#20353c;--muted:#65736f;--accent:#a75a1a;--gold:#ffc775;--line:#e6e7df;--card:#fff;--keyboard-offset:0px;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:var(--paper);font-synthesis:none}
*{box-sizing:border-box}body{margin:0}button,input{font:inherit}button,a,input,summary{-webkit-tap-highlight-color:transparent}button,a{touch-action:manipulation}button{cursor:pointer}a{color:inherit}button{color:inherit}svg{width:24px;height:24px;fill:none;stroke:currentColor;stroke-width:1.65;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}button:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid var(--accent);outline-offset:4px}input:focus-visible{outline:none}[hidden]{display:none!important}.svg-library{position:absolute;width:0;height:0;overflow:hidden}.skip-link{position:fixed;top:-100px;left:20px;z-index:1000;background:var(--ink);color:white;padding:15px;border-radius:10px}.skip-link:focus{top:10px}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}.sidebar{position:fixed;inset:0 auto 0 0;width:250px;padding:34px 20px 24px;background:#eeeee6;border-right:1px solid #e4e5dc;display:flex;flex-direction:column;z-index:20}.brand{display:flex;align-items:center;gap:12px;text-decoration:none;margin:0 8px}.brand-mark{display:flex;align-items:center;justify-content:center;width:46px;height:52px;border-radius:15px;background:var(--ink);color:var(--gold);flex-shrink:0}.brand-mark svg{width:29px;height:29px}.brand strong{font-family:Georgia,"Times New Roman",serif;font-size:26px;font-weight:600;letter-spacing:-.8px}.brand small{display:block;font-size:8px;letter-spacing:1.4px;margin-top:7px;white-space:nowrap}.nav-label{font-size:10px;letter-spacing:2px;color:var(--muted);margin:56px 16px 18px}.navigation{display:grid;gap:8px}.navigation a{display:flex;align-items:center;gap:12px;padding:16px 14px;border-radius:13px;text-decoration:none;font-size:14px;transition:background .15s}.navigation a:hover{background:#e5e7dd}.navigation a[aria-current="page"]{background:var(--ink);color:white}.navigation a[aria-current="page"] svg{color:var(--gold)}.navigation a small{margin-left:auto;font-size:10px;font-variant-numeric:tabular-nums;opacity:.55}.navigation a svg{width:21px;height:21px}.sidebar-bottom{margin-top:auto;padding:35px 14px 10px}.tiny-rule{display:block;width:32px;height:2px;background:var(--accent);margin-bottom:21px}.sidebar-bottom p{font-family:Georgia,"Times New Roman",serif;font-size:20px;margin:0 0 12px}.sidebar-bottom small{font-size:12px;line-height:1.9;color:var(--muted)}.workspace{margin-left:250px}.topbar{height:90px;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:0 42px;border-bottom:1px solid var(--line)}.topbar-caption{font-size:10px;letter-spacing:1.6px;color:var(--muted)}.topbar-actions{display:flex;align-items:center;gap:24px}.connection{font-size:11px;color:var(--muted);display:flex;align-items:center;gap:7px;white-space:nowrap}.connection i{width:6px;height:6px;background:#6d8967;border-radius:50%}.connection.offline i{background:var(--accent)}.install-button{display:flex;align-items:center;gap:7px;border:1px solid #d6dbcf;background:transparent;border-radius:9px;padding:10px 13px;font-size:12px;font-weight:500;min-height:40px}.install-button:hover{background:#e8ebe1}.install-button svg{width:16px;height:16px}.mobile-brand{display:none}main{max-width:1140px;margin:auto;padding:46px 42px 36px;outline:0}.page-heading{margin-bottom:33px}.eyebrow{display:flex;align-items:center;gap:12px;color:var(--accent);font-size:10px;letter-spacing:2px;font-weight:600}.eyebrow span:first-child{display:flex;align-items:center;justify-content:center;width:33px;height:25px;border-radius:14px;background:#eae0d0;font-size:11px;font-family:ui-monospace,SFMono-Regular,monospace;letter-spacing:0}h1{font:normal clamp(34px,3.9vw,52px)/1.15 Georgia,"Times New Roman",serif;margin:20px 0 14px;letter-spacing:-1.6px;text-wrap:balance}.page-heading>p{color:var(--muted);font-size:14px;line-height:1.7;margin:0}.calculator-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:25px;align-items:start}.input-card{background:var(--card);border-radius:24px;padding:26px 27px}.card-title{display:flex;align-items:center;justify-content:space-between;margin-bottom:23px;gap:10px}.card-title h2{font-size:15px;margin:0;display:flex;align-items:center;gap:10px;font-weight:600}.card-title h2 svg{width:19px;height:19px}.icon-button{display:flex;align-items:center;justify-content:center;border:0;background:transparent;width:44px;height:44px;margin:-8px;flex-shrink:0}.icon-button svg{width:18px;height:18px}.card-title .icon-button{color:var(--accent)}#fields{display:grid;gap:22px}.field label{display:block;font-size:12px;line-height:1.6;color:var(--muted);margin-bottom:9px}.field label small{font-size:11px;opacity:.8}.input-wrap{display:flex;align-items:center;border:1px solid #e3e5dc;border-radius:11px;background:#f7f6f1;padding:0 14px;min-height:55px;gap:8px;transition:border .15s,box-shadow .15s}.input-wrap:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px #a75a1a12}.input-wrap:has([aria-invalid="true"]){border-color:#b94d33}.input-wrap input{width:100%;min-width:0;background:none;border:0;padding:13px 0;color:var(--ink);font-size:23px;line-height:1.2;font-weight:500;font-variant-numeric:tabular-nums;border-radius:0}.input-wrap>span{white-space:nowrap;font-size:12px;color:var(--muted)}.input-note{display:flex;align-items:center;gap:7px;color:var(--muted);font-size:10px;line-height:1.7;margin:24px 0 0}.input-note>span{width:4px;height:4px;background:#8fa58a;border-radius:50%;flex-shrink:0}.presets{display:flex;flex-wrap:wrap;align-items:center;gap:7px;margin-top:20px}.presets:empty{display:none}.preset-label{font-size:10px;color:var(--muted);width:100%;margin-bottom:2px}.presets button{font-size:11px;background:white;border:1px solid var(--line);border-radius:6px;min-height:32px;padding:5px 10px}.presets button:hover{background:var(--paper);border-color:#c8b192}.result-card{background:var(--ink);color:#fff;border-radius:24px;padding:29px 29px 26px;overflow:hidden}.result-eyebrow{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:31px;color:var(--gold)}.result-eyebrow span{font-size:9px;letter-spacing:2.2px;font-weight:600}.result-eyebrow>svg{width:25px;height:25px}.result-card h2{font-size:14px;font-weight:500;line-height:1.6;margin:0;color:#e1e7e5}.result-number{display:flex;align-items:baseline;gap:10px;flex-wrap:wrap;color:var(--gold);margin:13px 0 14px}.result-number span:first-child{font-size:clamp(38px,4.9vw,65px);line-height:1.1;font-weight:400;letter-spacing:-1.5px;font-variant-numeric:tabular-nums;overflow-wrap:anywhere}.result-number span:last-child{font-size:15px;font-weight:500}.result-note{font-size:11px;color:#bac7c7;line-height:1.8;margin:0}.result-card dl{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,auto);column-gap:20px;row-gap:21px;border-top:1px solid #ffffff24;margin:26px 0;padding:27px 0 0;font-size:12px;line-height:1.5}.result-card dt{color:#c3d0ce}.result-card dd{margin:0;text-align:right;font-weight:500;font-variant-numeric:tabular-nums;overflow-wrap:anywhere}.share-button{display:flex;align-items:center;justify-content:center;gap:9px;border:0;border-radius:10px;background:#ffffff12;color:white;width:100%;min-height:44px;font-size:11px;font-weight:500;padding:10px}.share-button:hover{background:#ffffff20}.share-button svg{width:16px;height:16px}#error-body h2{color:var(--gold);font-size:19px}#error-message{font-size:14px;line-height:1.8}.error-hint{font-size:11px;color:#bac7c7;line-height:1.7;display:block}.method{background:#fff9;border:1px solid #ffffff70;border-radius:17px;margin-top:27px}.method summary{display:flex;align-items:center;gap:11px;list-style:none;cursor:pointer;padding:21px 23px;font-size:12px;font-weight:500;min-height:62px}.method summary::-webkit-details-marker{display:none}.formula-symbol{font-family:Georgia,"Times New Roman",serif;font-size:16px;font-style:italic}.method summary>svg{width:14px;height:14px;margin-left:auto;color:var(--muted);transition:transform .2s}.method[open] summary>svg{transform:rotate(90deg)}#method-content{padding:0 24px 23px;font-size:12px;color:var(--muted);line-height:1.9;max-width:810px}#method-content p{margin:0 0 12px}#method-content p:last-child{margin-bottom:0}#method-content a{color:var(--accent);text-underline-offset:3px}.formula{font-family:ui-monospace,SFMono-Regular,monospace;font-size:11px;color:var(--ink);background:#eceee6;padding:12px 14px;border-radius:8px;overflow-wrap:anywhere}.footer-notes{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;margin-top:25px;color:var(--muted);font-size:10px;line-height:1.8}.footer-notes p{margin:0;display:flex;align-items:center;gap:7px}.footer-notes svg{width:14px;height:14px}.mobile-result,.mobile-tabs{display:none}dialog{padding:28px;border:1px solid var(--line);border-radius:24px;width:min(480px,calc(100% - 32px));max-height:calc(100dvh - 48px);color:var(--ink);background:var(--paper);box-shadow:0 28px 100px #071d3240;overflow:auto}dialog::backdrop{background:#102d3a80;backdrop-filter:blur(4px)}.dialog-heading{display:flex;align-items:center;justify-content:space-between}.dialog-heading .brand-mark{width:40px;height:45px;border-radius:12px}.dialog-heading .brand-mark svg{width:24px;height:24px}dialog h2{font:normal 29px/1.2 Georgia,"Times New Roman",serif;letter-spacing:-.6px;margin:24px 0 12px}dialog>p{font-size:13px;color:var(--muted);line-height:1.8}.install-steps h3{font-size:13px;margin-top:25px}.install-steps p,.install-steps ol{font-size:12px;color:var(--muted);line-height:1.9}.install-steps ol{padding-left:20px}.install-steps li{padding-left:5px;margin-bottom:8px}.install-offline{display:flex;align-items:start;gap:10px;border-top:1px solid #dcded3;padding-top:16px;margin-top:24px;color:var(--muted)}.install-offline svg{width:18px;height:18px;margin-top:2px}.install-offline p{font-size:11px;line-height:1.9;margin:0}.primary-button{background:var(--ink);border:0;color:white;border-radius:10px;min-height:44px;padding:12px 18px;width:100%;font-size:13px;margin:10px 0}.toast{position:fixed;bottom:28px;left:calc(50% + 100px);transform:translateX(-50%);background:var(--ink);color:white;border:1px solid #ffffff30;padding:14px 20px;border-radius:12px;font-size:13px;z-index:100;box-shadow:0 5px 20px #0002;max-width:calc(100% - 40px)}.no-script{padding:24px;background:#ffe9c9;border-radius:12px;line-height:1.8}
@media(min-width:1500px){main{padding-top:60px}.topbar{padding-right:max(42px,calc((100vw - 1300px)/2))}.page-heading{margin-bottom:38px}}
@media(max-width:1100px) and (min-width:761px){.sidebar{width:218px;padding-left:12px;padding-right:12px}.workspace{margin-left:218px}.topbar{padding:0 28px}.topbar-caption{letter-spacing:.7px;font-size:8px}main{padding:35px 28px}.calculator-grid{gap:18px}.input-card,.result-card{padding:24px 21px}.result-card dl{column-gap:12px;font-size:11px}.connection{display:none}.topbar-actions{gap:12px}.brand strong{font-size:24px}.brand small{letter-spacing:1px;font-size:7px}}
@media(max-width:760px){.sidebar{display:none}.workspace{margin-left:0}.topbar{height:70px;padding:env(safe-area-inset-top) 21px 0;box-sizing:content-box;border-bottom:1px solid var(--line)}.topbar-caption{display:none}.mobile-brand{display:flex;align-items:center;gap:8px;text-decoration:none}.mobile-brand svg{width:22px;height:22px;color:var(--accent)}.mobile-brand strong{font:normal 23px Georgia,"Times New Roman",serif}.topbar-actions{gap:14px}.connection{font-size:10px}.connection i{width:5px;height:5px}.install-button{font-size:11px;min-height:36px;padding:7px 10px}.install-button svg{width:14px;height:14px}main{padding:28px 20px calc(195px + env(safe-area-inset-bottom))}.eyebrow{font-size:8px;letter-spacing:1.7px;gap:9px}.eyebrow span:first-child{width:29px;height:23px;font-size:10px}h1{font-size:36px;letter-spacing:-1px;margin-top:17px;margin-bottom:12px}.page-heading>p{font-size:13px}.page-heading{margin-bottom:26px}.calculator-grid{grid-template-columns:minmax(0,1fr);gap:22px}.input-card{padding:23px 22px;border-radius:22px}.card-title h2{font-size:15px}.card-title{margin-bottom:25px}#fields{gap:21px}.field label{font-size:12px}.input-wrap{min-height:54px}.input-wrap input{font-size:23px}.result-card{padding:25px 23px;border-radius:22px}.result-number span:first-child{font-size:54px}.result-eyebrow{margin-bottom:25px}.result-card dl{font-size:12px}.footer-notes{display:grid;gap:12px;font-size:10px}.method{margin-top:22px}.method summary{padding:19px 20px;font-size:12px}.method #method-content{padding:0 20px 20px}.mobile-tabs{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));position:fixed;inset:auto 0 0;z-index:40;min-height:calc(66px + env(safe-area-inset-bottom));padding:7px 8px calc(7px + env(safe-area-inset-bottom));border-top:1px solid #d8ded6;background:#eeefe9f5;backdrop-filter:blur(20px)}.mobile-tabs a{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;font-size:9px;text-decoration:none;color:#79867e;min-height:50px}.mobile-tabs svg{width:23px;height:23px}.mobile-tabs a[aria-current="page"]{color:var(--accent);font-weight:600}.mobile-result{display:flex;position:fixed;z-index:39;inset:auto 0 calc(66px + env(safe-area-inset-bottom));min-height:78px;background:var(--ink);color:var(--gold);padding:13px 23px 14px;align-items:center;justify-content:space-between;gap:14px;box-shadow:0 -5px 16px #20353c08}.mobile-result small{display:block;font-size:11px;line-height:1.6;color:#c5cfcc;margin-bottom:3px}.mobile-result strong{display:block;font-size:24px;line-height:1.25;font-weight:500;font-variant-numeric:tabular-nums;overflow-wrap:anywhere}.mobile-result .icon-button{color:white;width:44px;height:44px}.mobile-result .icon-button svg{width:20px;height:20px}.keyboard-open .mobile-tabs{display:none}.keyboard-open .mobile-result{bottom:var(--keyboard-offset)}.toast{left:50%;bottom:calc(165px + env(safe-area-inset-bottom));text-align:center;width:max-content}.keyboard-open .toast{bottom:calc(var(--keyboard-offset) + 90px)}dialog{padding:24px}.presets button{min-height:36px}.input-note{font-size:10px}}
@media(max-width:360px){.topbar{padding-left:16px;padding-right:16px}.connection{display:none}main{padding-left:15px;padding-right:15px}h1{font-size:32px}.input-card{padding:22px 19px}.eyebrow{letter-spacing:1px}.mobile-tabs a{font-size:8px}.mobile-result strong{font-size:22px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}
@media print{.sidebar,.topbar,.mobile-tabs,.mobile-result,.presets,.share-button,.icon-button,.footer-notes{display:none!important}.workspace{margin:0}main{padding:20px;max-width:none}.result-card{background:white;color:black;border:1px solid #999}.result-card *{color:black!important}.method{display:none}.calculator-grid{grid-template-columns:1fr 1fr}.input-wrap{border:0}body{background:white}}