:root{--paper:#f6f3e9;--panel:#fffdf6;--line:#d8d3c0;--ink:#2c3327;--ink-soft:#75705f;--rust:#8f3d24;--sage:#5b6b4a;--serif:"Source Serif 4", Georgia, serif;--sans:"Inter", system-ui, -apple-system, sans-serif;--radius:8px}@media (prefers-color-scheme:dark){:root:not([data-theme=light]){--paper:#1b1d17;--panel:#24271f;--line:#3a3d33;--ink:#e9e5d6;--ink-soft:#a8a390;--rust:#d5794f;--sage:#93ab74}}:root[data-theme=dark]{--paper:#1b1d17;--panel:#24271f;--line:#3a3d33;--ink:#e9e5d6;--ink-soft:#a8a390;--rust:#d5794f;--sage:#93ab74}*{box-sizing:border-box}body{background:var(--paper);color:var(--ink);font-family:var(--sans);margin:0;font-size:15px;line-height:1.5}.shell{max-width:1080px;margin:0 auto;padding:24px 20px 80px}.masthead{border-bottom:2px solid var(--ink);justify-content:space-between;align-items:baseline;gap:16px;margin-bottom:22px;padding-bottom:14px;display:flex}.masthead h1{font-family:var(--serif);letter-spacing:-.3px;margin:0;font-size:28px;font-weight:700}.masthead .tagline{color:var(--ink-soft);text-transform:uppercase;letter-spacing:2px;font-size:12px}.masthead-controls{flex-wrap:wrap;justify-content:flex-end;align-items:center;gap:8px;display:flex}.notation-switch{background:var(--ink);color:var(--paper);border:1px solid var(--ink);font:500 12px var(--sans);cursor:pointer;white-space:nowrap;border-radius:5px;align-items:center;padding:6px 12px;display:inline-flex}.notation-switch:hover{background:var(--sage);border-color:var(--sage)}.theme-toggle{background:var(--panel);width:30px;height:30px;color:var(--ink);border:1px solid var(--line);cursor:pointer;border-radius:5px;justify-content:center;align-items:center;font-size:15px;display:inline-flex}.theme-toggle:hover{border-color:var(--sage);color:var(--sage)}.precision{border:1px solid var(--line);background:var(--panel);border-radius:5px;align-items:center;display:inline-flex;overflow:hidden}.precision button{color:var(--ink);font:600 14px var(--sans);cursor:pointer;background:0 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.big{font-family:var(--serif);font-variant-numeric:lining-nums;font-size:34px;font-weight:600;line-height:1.1}.result-card .indian-label{color:var(--ink-soft);font-size:18px;font-family:var(--sans);margin-left:8px;font-weight:400}.result-card .result-header{justify-content:space-between;align-items:center;gap:16px;display:flex}.result-card .swap-btn{background:var(--paper);border:1px solid var(--line);width:32px;height:32px;color:var(--ink-soft);cursor:pointer;border-radius:4px;outline:none;justify-content:center;align-items:center;font-size:18px;transition:all .2s;display:inline-flex}.result-card .swap-btn:hover{border-color:var(--sage);color:var(--ink);background:var(--panel)}.result-card .big .num{color:var(--rust)}.result-card .siblings{flex-wrap:wrap;gap:8px;margin-top:12px;display:flex}.result-card .sib{background:var(--paper);border:1px solid var(--line);font-variant-numeric:tabular-nums;border-radius:4px;padding:4px 10px;font-size:12px}.result-error{color:var(--ink-soft);margin-top:10px;padding-left:4px;font-size:13px}.suggestions{background:var(--panel);border:1px solid var(--line);border-radius:6px;margin-top:8px;overflow:hidden}.suggestions button{border:0;border-bottom:1px solid var(--line);width:100%;font:400 14px var(--sans);color:var(--ink);cursor:pointer;text-align:left;background:0 0;justify-content:space-between;padding:10px 14px;display:flex}.suggestions button:last-child{border-bottom:0}.suggestions button:hover,.suggestions button.sel{background:var(--paper)}.suggestions button.sel{box-shadow:inset 3px 0 0 var(--sage)}.suggestions .cat{color:var(--ink-soft);font-size:12px}.catnav{margin:26px 0 14px}.catnav .tabs{flex-wrap:wrap;gap:6px;display:flex}.catnav button{background:var(--panel);border:1px solid var(--line);font:500 13px var(--sans);color:var(--ink);cursor:pointer;border-radius:4px;align-items:center;gap:5px;padding:6px 12px;display:inline-flex}.catnav button.active{background:var(--sage);border-color:var(--sage);color:var(--panel)}.stale-dot{background:var(--rust);border-radius:50%;width:7px;height:7px;display:inline-block}.grid{grid-template-columns:repeat(auto-fill,minmax(170px,1fr));gap:10px;display:grid}.cell{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:10px 12px;display:block;position:relative}.cell.source{border-color:var(--rust);box-shadow:0 0 0 2px color-mix(in srgb, var(--rust) 15%, transparent)}.cell.pinned{border-color:color-mix(in srgb, var(--rust) 35%, var(--line))}.cell .cell-label{text-transform:uppercase;letter-spacing:1px;color:var(--ink-soft);margin-bottom:2px;padding-right:40px;font-size:11px;display:block}.cell input{width:100%;color:var(--ink);font:600 19px var(--sans);font-variant-numeric:tabular-nums;background:0 0;border:0;outline:none;padding:2px 0}.cell .pin,.cell .copy{cursor:pointer;color:var(--ink-soft);background:0 0;border:0;padding:2px;font-size:13px;line-height:1;position:absolute;top:8px}.cell .pin{right:28px}.cell .copy{cursor:copy;right:8px}.cell .pin:hover,.cell .copy:hover,.cell .pin[aria-pressed=true]{color:var(--rust)}.history{border-top:1px solid var(--line);margin-top:34px;padding-top:14px}.history-head{justify-content:space-between;align-items:baseline;display:flex}.history h2{font-family:var(--serif);margin:0 0 10px;font-size:17px}.history .clear{color:var(--ink-soft);font:500 12px var(--sans);cursor:pointer;background:0 0;border:0;padding:2px 4px}.history .clear:hover{color:var(--rust)}.history ul{margin:0;padding:0;list-style:none}.history li{align-items:stretch;gap:6px;display:flex}.history button.entry{border:0;border-bottom:1px dashed var(--line);font:400 13px var(--sans);color:var(--ink);cursor:pointer;text-align:left;background:0 0;flex:1;justify-content:space-between;gap:12px;padding:7px 2px;display:flex}.history button.entry:hover{color:var(--rust)}.history li .copy{color:var(--ink-soft);cursor:copy;border:0;border-bottom:1px dashed var(--line);background:0 0;padding:0 4px;font-size:13px}.history li .copy:hover{color:var(--rust)}.history .res{color:var(--ink-soft);font-variant-numeric:tabular-nums}.toast{background:var(--ink);color:var(--paper);z-index:100;border-radius:6px;padding:10px 18px;font-size:13px;position:fixed;bottom:22px;right:22px}.date-panel{flex-direction:column;gap:20px;margin-top:26px;display:flex}.panel-section{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px}.panel-section h3{font-family:var(--serif);color:var(--ink);margin:0 0 16px;font-size:17px;font-weight:600}.panel-section .input-row{align-items:flex-end;gap:12px;margin-bottom:12px;display:flex}.panel-section .input-row.wrap-mobile{flex-wrap:wrap}.panel-section .field-wrap{flex-direction:column;gap:4px;display:flex}.panel-section .field-wrap.flex-1{flex:1;min-width:200px}.panel-section .field-wrap.flex-2{flex:2;min-width:200px}.panel-section .field-wrap.base-date{flex:2;min-width:150px}.panel-section .field-wrap.op-select{flex:1;min-width:100px}.panel-section .field-wrap.offset-val{flex:1;min-width:80px}.panel-section .field-wrap.unit-select{flex:1.2;min-width:100px}.panel-section .label{text-transform:uppercase;letter-spacing:1px;color:var(--ink-soft);font-size:11px}.panel-section input,.panel-section select{background:var(--paper);border:1px solid var(--line);height:38px;font:500 14px var(--sans);color:var(--ink);border-radius:5px;outline:none;width:100%;padding:0 10px}.panel-section input:focus,.panel-section select:focus{border-color:var(--sage)}.panel-section .to-label{height:38px;font:500 14px var(--sans);color:var(--ink-soft);align-items:center;display:flex}.panel-section .output-row{background:var(--paper);border-radius:5px;margin-top:8px;padding:10px 14px}.panel-section .output-val{font-family:var(--serif);color:var(--rust);font-size:20px;font-weight:600}.help-btn{background:var(--panel);border:1px solid var(--line);width:32px;height:32px;color:var(--ink-soft);font:600 15px var(--sans);cursor:pointer;border-radius:50%;outline:none;justify-content:center;align-items:center;transition:all .2s;display:inline-flex}.help-btn:hover{border-color:var(--sage);color:var(--ink);background:var(--paper)}.modal-wrapper{z-index:1000;justify-content:center;align-items:center;width:100vw;height:100vh;padding:20px;display:flex;position:fixed;top:0;left:0}.modal-backdrop{-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);cursor:default;background:#00000073;border:none;outline:none;width:100%;height:100%;padding:0;position:absolute;top:0;left:0}.modal-content{z-index:1;background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);flex-direction:column;width:100%;max-width:680px;max-height:90vh;animation:.25s cubic-bezier(.16,1,.3,1) modalSlide;display:flex;position:relative;overflow-y:auto;box-shadow:0 10px 30px #00000026}@keyframes modalSlide{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.modal-header{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;padding:20px 24px;display:flex}.modal-header h2{font-family:var(--serif);color:var(--ink);margin:0;font-size:22px;font-weight:600}.close-btn{color:var(--ink-soft);cursor:pointer;background:0 0;border:none;padding:0;font-size:28px;line-height:1;transition:color .15s}.close-btn:hover{color:var(--ink)}.modal-body{padding:24px}.modal-body .intro{color:var(--ink-soft);margin:0 0 24px;font-size:15px;line-height:1.5}.examples-grid{grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:20px;display:grid}.example-group{background:var(--panel);border:1px solid var(--line);border-radius:8px;padding:16px}.example-group h3{font-family:var(--serif);color:var(--ink);border-bottom:1px solid var(--line);margin:0 0 12px;padding-bottom:6px;font-size:16px;font-weight:600}.example-group ul{flex-direction:column;gap:10px;margin:0;padding:0;list-style:none;display:flex}.example-group li{flex-direction:column;gap:4px;display:flex}.ex-label{text-transform:uppercase;letter-spacing:.5px;color:var(--ink-soft);font-size:11px}.ex-code{background:var(--paper);border:1px solid var(--line);text-align:left;cursor:pointer;border-radius:4px;outline:none;width:100%;padding:6px 10px;transition:all .15s}.ex-code:hover{border-color:var(--sage);background:var(--panel);transform:translateY(-1px)}.ex-code code{font-family:var(--mono);color:var(--rust);font-size:13px}@media (width<=600px){.shell{padding:16px 12px 60px}.masthead{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:16px;padding-bottom:12px}.masthead-controls{justify-content:flex-start;width:100%}.date-panel .panel-section{padding:14px 16px}.date-panel .date-range-row{grid-template-rows:auto auto;grid-template-columns:1fr auto;align-items:center;gap:8px 12px;display:grid}.date-panel .date-range-row .field-wrap:first-of-type{grid-area:1/1;min-width:0}.date-panel .date-range-row .field-wrap:last-of-type{grid-area:2/1;min-width:0}.date-panel .date-range-row .to-label{grid-area:1/2/span 2;justify-content:center;align-self:center;height:auto;margin:0;padding:14px 0 0;font-size:14px}.date-panel .date-range-row input[type=date]{padding:0 10px;font-size:14px}}