:root{color-scheme:light;--bg:#f7f8f6;--panel:#ffffff;--text:#17201a;--muted:#5d685f;--line:#dce2dd;--accent:#146c43;--accent-strong:#0f5132;--focus:#b9e6cf}*{box-sizing:border-box}[hidden]{display:none!important}body{margin:0;background:var(--bg);color:var(--text);font-family:Arial,Helvetica,sans-serif;line-height:1.5}a{color:var(--accent-strong)}.shell{width:min(1120px,calc(100% - 32px));margin:0 auto}.topbar{border-bottom:1px solid var(--line);background:rgba(255,255,255,.86)}.topbar .shell{display:flex;align-items:center;justify-content:space-between;min-height:64px;gap:20px}.brand{flex:0 0 auto;display:inline-flex;align-items:center;color:var(--text);font-size:22px;font-weight:700;text-decoration:none}.brand .tile{display:inline-flex;align-items:center;justify-content:center;width:1.18em;height:1.18em;margin:0 1px;background:var(--accent);color:#fff;border-radius:4px;line-height:1}.brand .tld{color:var(--muted);font-weight:400}.topbar-actions{display:flex;align-items:center;justify-content:flex-end;gap:14px;margin-left:auto;min-width:0}.language-links{display:flex;flex:0 0 auto;flex-wrap:nowrap;gap:10px;font-size:14px;white-space:nowrap}.hero-head{display:flex;align-items:flex-start;justify-content:space-between;gap:12px}.fav-toggle{flex:0 0 auto;display:inline-flex;align-items:center;justify-content:center;width:44px;min-height:44px;margin-top:2px;padding:0;border:1px solid var(--line);border-radius:8px;background:#fff;color:var(--muted)}.fav-toggle[aria-pressed=true]{color:#e6a700;border-color:#e6a700}.saved-card{position:relative}[data-saved-grid]{grid-template-columns:repeat(auto-fill,minmax(220px,1fr))}.saved-card .card{display:block;padding-right:44px}.saved-remove{position:absolute;top:8px;right:8px;width:28px;height:28px;min-height:28px;display:inline-flex;align-items:center;justify-content:center;padding:0;border:1px solid var(--line);border-radius:6px;background:#fff;color:var(--muted);font-size:18px;line-height:1}.search-saved-label{margin:4px 4px 2px;font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:.04em;color:var(--muted)}.suggest-form{display:grid;gap:16px;max-width:640px;margin:8px 0 32px}.suggest-form textarea{width:100%;border:1px solid var(--line);border-radius:8px;padding:10px 12px;font:inherit;background:#fff;color:var(--text);resize:vertical}.suggest-form .credit-note{margin:0;font-size:14px;color:var(--muted)}.suggest-form button{justify-self:start}.hp{position:absolute;left:-9999px;width:1px;height:1px;opacity:0}.suggest-status{margin:0;font-weight:700}.suggest-status.is-ok{color:var(--accent)}.suggest-status.is-err{color:#d14b4b}.tool-credit{margin:18px 0 0;font-size:14px;color:var(--muted)}.footer .shell{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}.footer-links{display:flex;align-items:center;flex-wrap:wrap;gap:8px 16px}.footer-suggest{color:var(--accent);font-weight:700}.footer-install{min-height:36px;padding:0 14px;border:1px solid var(--accent);border-radius:8px;background:var(--accent);color:#fff;font-weight:700;font-size:14px;cursor:pointer}.footer-ios{font-size:13px;color:var(--muted)}.site-search{position:relative;flex:0 0 auto}.search-toggle{display:inline-flex;align-items:center;justify-content:center;width:40px;min-height:40px;padding:0;border:1px solid var(--line);border-radius:8px;background:#fff;color:var(--text)}.search-panel{position:absolute;top:calc(100% + 8px);right:0;z-index:30;width:min(360px,calc(100vw - 32px));padding:10px;background:#fff;border:1px solid var(--line);border-radius:10px;box-shadow:0 10px 30px rgba(0,0,0,.12)}.search-input{width:100%}.search-results{display:grid;gap:2px;margin-top:8px;max-height:60vh;overflow:auto}.search-results:empty{display:none}.search-hit{display:flex;align-items:baseline;justify-content:space-between;gap:12px;padding:9px 10px;border-radius:8px;text-decoration:none;color:var(--text)}.search-hit.is-active,.search-hit:hover{background:var(--focus)}.search-hit-name{font-weight:700;font-size:15px}.search-hit-cat{flex:0 0 auto;font-size:12px;color:var(--muted)}.search-empty{margin:6px 4px;font-size:14px;color:var(--muted)}.market-picker{display:inline-flex;flex:0 0 auto;gap:4px}.market-picker .flag{border:1px solid var(--line);background:0 0;border-radius:6px;padding:2px 6px;font-size:16px;line-height:1;cursor:pointer;opacity:.5}.market-picker .flag[aria-pressed=true]{opacity:1;border-color:var(--accent)}.hero{padding:30px 0 14px}.hero h1{max-width:780px;margin:0;font-size:clamp(28px, 4.4vw, 48px);line-height:1.08}.hero p{max-width:680px;margin:12px 0 0;color:var(--muted);font-size:17px}.hero-has-map{display:flex;align-items:center;justify-content:space-between;gap:24px}.hero-has-map .hero-text{flex:1 1 auto;min-width:0}.hero-map{flex:0 0 auto;display:inline-flex;flex-direction:column;align-items:center;gap:6px;padding:12px;border:1px solid var(--line);border-radius:12px;background:var(--panel);text-decoration:none;transition:border-color .15s,transform .15s}.hero-map:hover{border-color:var(--accent);transform:translateY(-2px)}.hero-map-img{display:block;width:200px;height:100px;background:var(--accent);-webkit-mask:url("/assets/img/world.svg") center/contain no-repeat;mask:url("/assets/img/world.svg") center/contain no-repeat}.hero-map-label{font-size:13px;font-weight:600;color:var(--accent-strong)}@media (max-width:720px){.hero-map{display:none}}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;padding:20px 0 48px}.card,.tool{border:1px solid var(--line);border-radius:8px;background:var(--panel)}.card{padding:20px;text-decoration:none;position:relative;overflow:hidden}.card h3{margin:0 0 8px;color:var(--text);font-size:21px}.card p{margin:0;color:var(--muted)}.note{margin:0;color:var(--muted);font-size:14px}.tool{display:grid;grid-template-columns:minmax(0,1fr) minmax(280px,360px);gap:24px;padding:24px;margin:16px 0 40px;min-height:300px;align-content:start}.controls,.results{display:grid;align-content:start;gap:16px}.field{display:grid;gap:6px}[data-pixel-fields],[data-print-fields]{display:grid;gap:16px}.label,label{color:var(--muted);font-size:14px;font-weight:700}button,input,select{min-height:44px;border-radius:8px;font:inherit}input,select{width:100%;border:1px solid var(--line);padding:10px 12px;background:#fff;color:var(--text)}button:focus,input:focus,select:focus{outline:3px solid var(--focus);outline-offset:2px}.chips,.segmented{display:flex;flex-wrap:wrap;gap:8px}button{border:1px solid var(--line);padding:0 14px;background:#fff;color:var(--text);cursor:pointer}.primary,button[aria-pressed=true]{border-color:var(--accent);background:var(--accent);color:#fff}.seg-link{display:inline-flex;align-items:center;min-height:44px;padding:0 14px;border:1px solid var(--line);border-radius:8px;background:#fff;color:var(--text);text-decoration:none}.result-row{display:flex;justify-content:space-between;align-items:baseline;gap:16px;border-bottom:1px solid var(--line);padding:10px 0}.result-row strong{text-align:right;font-size:17px;overflow-wrap:anywhere}.hash-row{padding:8px 0;border-bottom:1px solid var(--line)}.hash-k{display:block;margin-bottom:2px;font-size:13px;font-weight:700;color:var(--muted)}.hash-v{display:block;font-family:SFMono-Regular,Consolas,"Liberation Mono",Menlo,monospace;font-size:13px;word-break:break-all;user-select:all}.tool-chart{margin:2px 0 4px}.tool-chart .chart{display:block;width:100%;height:auto;border:1px solid var(--line);border-radius:8px;background:#fff}.chart-area{fill:var(--focus)}.chart-line{fill:none;stroke:var(--accent);stroke-width:2;vector-effect:non-scaling-stroke}.term-group{display:flex;gap:8px}.term-group input{flex:1 1 auto;width:auto}.term-group select{flex:0 0 auto;width:auto}.amort-wrap{grid-column:1/-1}.amort-title{margin:4px 0 8px;font-size:15px}.amort-scroll{max-height:320px;overflow:auto;border:1px solid var(--line);border-radius:8px}.amort-table{width:100%;border-collapse:collapse;font-size:14px}.amort-table td,.amort-table th{padding:6px 12px;border-bottom:1px solid var(--line);text-align:right}.amort-table td:first-child,.amort-table th:first-child{text-align:left}.amort-table thead th{position:sticky;top:0;background:#f1f3f0}.amort-table tbody tr:last-child td{border-bottom:none}.r3-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.r3-chart{margin:12px 0 2px}.r3-chart .chart{display:block;width:100%;max-width:340px;height:auto;margin:0 auto}.dice-tray{display:flex;flex-wrap:wrap;gap:8px;margin:10px 0 4px}.dice-tray .die{width:48px;height:48px}.amort-diagram{display:block;width:100%;max-width:480px;height:auto;margin:16px 0;border:1px solid var(--line);border-radius:8px;background:#fff}.amort-diagram .d-interest{fill:#f0cdbc}.amort-diagram .d-principal{fill:var(--focus)}.amort-diagram .d-label{font:700 13px Arial,Helvetica,sans-serif;fill:var(--text)}.result-row.is-primary strong{font-size:23px;line-height:1.15;color:var(--accent-strong)}.content-section{max-width:920px;padding:8px 0 56px}.content-section h2{margin:32px 0 10px;font-size:28px;line-height:1.2}.content-section h3{margin:24px 0 8px;font-size:20px}.content-section li,.content-section p{color:var(--muted)}.content-section ul{padding-left:22px}.formula{border-left:4px solid var(--accent);margin:18px 0;padding:12px 16px;background:#fff;color:var(--text);font-weight:700}.content-section table{border-collapse:collapse;margin:14px 0;font-size:14px}.content-section td,.content-section th{border:1px solid var(--line);padding:6px 12px;text-align:left}.content-section th{background:#f1f3f0}.diagram-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px;margin:20px 0}.diagram{width:100%;min-height:180px;border:1px solid var(--line);border-radius:8px;background:#fff}.related{padding:4px 0 36px}.related h2{margin:0 0 12px;font-size:18px}.related-links{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:8px 18px;font-size:14px}.footer{border-top:1px solid var(--line);padding:24px 0;color:var(--muted);font-size:14px}@media (max-width:760px){.tool{grid-template-columns:1fr;padding:18px;margin:12px 0 28px;min-height:420px}.hero{padding:16px 0 8px}.hero h1{font-size:clamp(22px, 6.4vw, 30px)}.hero p{margin:8px 0 0;font-size:14.5px}.result-row.is-primary strong{font-size:21px}.topbar .shell{min-height:56px;gap:10px;padding:0}.brand{font-size:16px}.topbar-actions{gap:8px;overflow-x:auto;scrollbar-width:none}.topbar-actions::-webkit-scrollbar{display:none}.language-links{gap:8px;font-size:13px}.market-picker .flag{min-height:34px;padding:2px 5px}.search-panel{position:fixed;top:56px;left:8px;right:8px;width:auto}}textarea{width:100%;min-height:180px;border:1px solid var(--line);padding:12px;background:#fff;color:var(--text);font-family:SFMono-Regular,Consolas,"Liberation Mono",Menlo,monospace;font-size:14px;border-radius:8px;resize:vertical}textarea:focus{outline:3px solid var(--focus);outline-offset:2px}.checkbox-list{display:grid;gap:10px;margin:8px 0}.checkbox-label{display:flex;align-items:center;gap:8px;color:var(--text);font-weight:400;cursor:pointer}.checkbox-label input[type=checkbox]{width:auto;min-height:auto;margin:0;cursor:pointer}.password-display{font-family:SFMono-Regular,Consolas,"Liberation Mono",Menlo,monospace;font-size:20px;background:#f1f3f0;padding:14px;border-radius:8px;border:1px dashed var(--line);text-align:center;word-break:break-all;user-select:all;margin-bottom:12px}.strength-indicator{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:16px}.strength-bar{flex:1;height:6px;background:var(--line);border-radius:3px;position:relative}.strength-fill{height:100%;border-radius:3px;width:0;transition:width .3s,background-color .3s}.strength-weak .strength-fill{background:#dc3545;width:33%}.strength-medium .strength-fill{background:#ffc107;width:66%}.strength-strong .strength-fill{background:#198754;width:100%}.qr-preview{display:flex;justify-content:center;align-items:center;padding:16px;background:#fff;border:1px solid var(--line);border-radius:8px;min-height:200px}.qr-preview canvas,.qr-preview img{max-width:100%;height:auto!important}.bmi-indicator{font-size:16px;font-weight:700;padding:6px 12px;border-radius:6px;display:inline-block;margin-top:8px}.bmi-underweight{background:#cff4fc;color:#055160}.bmi-healthy{background:#d1e7dd;color:#0f5132}.bmi-overweight{background:#fff3cd;color:#664d03}.bmi-obese{background:#f8d7da;color:#842029}.word-count-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-bottom:16px}.word-count-card{background:#f8f9fa;border:1px solid var(--line);padding:12px;border-radius:8px;text-align:center}.word-count-card span{display:block;font-size:12px;color:var(--muted)}.word-count-card strong{font-size:18px;color:var(--text)}.density-list{display:grid;gap:6px;font-size:13px;margin-top:10px}.density-title{margin-top:12px}.world-clock{margin-top:6px}.wc-title{margin:8px 0 4px;font-size:14px;font-weight:700;color:var(--muted)}.wc-row{display:flex;justify-content:space-between;gap:12px;border-bottom:1px solid var(--line);padding:6px 0;font-size:14px;cursor:pointer}.wc-detail{color:var(--muted);font-size:13px;padding:4px 0 8px 17px;border-bottom:1px solid var(--line)}.wc-wx{margin-top:4px;line-height:1.9}.wx-ic{width:16px;height:16px;vertical-align:-3px;color:var(--accent)}.wc-row strong{font-variant-numeric:tabular-nums}.tz-convert{display:flex;flex-wrap:wrap;gap:10px;align-items:end}.tz-convert .field{flex:1 1 120px;min-width:0}.tz-swap{align-self:end;height:40px;min-width:44px;border:1px solid var(--line);background:#fff;color:var(--accent-strong);border-radius:8px;font-size:18px;cursor:pointer}.tz-swap:hover{border-color:var(--accent)}.wc-add{display:flex;gap:8px;margin:10px 0 6px}.wc-add input{flex:1;min-width:0;border:1px solid var(--line);border-radius:8px;padding:9px 10px;background:#fff;color:var(--text);font-size:14px}.wc-add button{flex:0 0 auto;border:1px solid var(--accent);background:var(--accent);color:#fff;border-radius:8px;padding:0 16px;cursor:pointer;font-size:14px}.wc-add button:hover{background:var(--accent-strong)}.wc-city{display:flex;align-items:center;flex:1;min-width:0}.wc-dot{display:inline-block;width:9px;height:9px;border-radius:50%;margin-right:8px;flex:0 0 auto}.wc-dot.day{background:#f4b740}.wc-dot.night{background:#324b8f}.wc-time em{color:var(--muted);font-size:12px;margin-left:8px}.wc-utc{color:var(--muted);font-size:11px;margin-left:6px}.tool[data-tool=timezone]{display:block}.tz-now{text-align:center;padding:2px 0 16px}.tz-datetime{grid-template-columns:1fr 1fr}.tz-now-label{color:var(--muted);font-size:13px;text-transform:uppercase;letter-spacing:.05em}.tz-now-time{font-size:clamp(42px, 11vw, 76px);font-weight:700;line-height:1.05;color:var(--accent-strong);font-variant-numeric:tabular-nums}.tz-now-row{display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:10px 22px}.tz-now-wx{font-size:26px;font-weight:700;color:var(--accent-strong);display:inline-flex;align-items:center;gap:6px}.tz-now-wx .wx-ic{width:28px;height:28px;color:var(--accent-strong);vertical-align:middle}.tz-now-wx2{display:inline-flex;flex-direction:column;align-items:center;font-size:13px;color:var(--muted);line-height:1.25}.tz-now-wx2 .d{font-weight:700}.tz-now-meta{color:var(--muted);font-size:15px;margin-top:6px}.tz-day{text-align:center;margin:-6px 0 14px;font-size:14px;color:var(--muted)}.tz-day:empty{display:none}.tz-day a{color:var(--accent-strong)}.tz-conv{flex-wrap:wrap;gap:6px 10px}.tz-conv-val{display:inline-flex;align-items:center;gap:8px;flex-wrap:wrap;justify-content:flex-end}.tz-copy{background:0 0;border:0;color:var(--accent);padding:2px;display:inline-flex;align-items:center;cursor:pointer;flex:0 0 auto}.tz-copy svg{width:18px;height:18px}.tz-copy.copied,.tz-copy:hover{color:var(--accent-strong)}.tz-diff{color:var(--muted);font-size:14px}.tz-map{margin:14px 0 4px;border:1px solid var(--line);border-radius:8px;overflow:hidden}.tz-night{fill:rgba(15,23,42,0.24);pointer-events:none}.tz-map svg{display:block;width:100%;height:auto}.tz-ocean{fill:#eaf2ee}.tz-land polygon{fill:#bcd9c8}.tz-lines line{stroke:#cfe0d6;stroke-width:1}.tz-zone{stroke:rgba(20,108,67,0.35);stroke-width:.5;cursor:pointer}.tz-zone.ze{fill:rgba(20,108,67,0.08)}.tz-zone.zo{fill:rgba(20,108,67,0.18)}.tz-zone:hover{fill:rgba(20,108,67,0.34)}.tz-zone.from{fill:rgba(20,108,67,0.30);stroke:var(--accent);stroke-width:1}.tz-zone.to{fill:rgba(20,108,67,0.50);stroke:var(--accent-strong);stroke-width:1.4}.wc-x{border:0;background:0 0;color:var(--muted);cursor:pointer;font-size:18px;line-height:1;padding:0 2px 0 8px;flex:0 0 auto}.wc-x:hover{color:#d14b4b}.u-center{text-align:center}.density-item{display:flex;justify-content:space-between;border-bottom:1px dashed var(--line);padding-bottom:4px}.cat-finance{background-image:url(/assets/img/cat/finance.svg)}.cat-datetime{background-image:url(/assets/img/cat/datetime.svg)}.cat-math{background-image:url(/assets/img/cat/math.svg)}.cat-text{background-image:url(/assets/img/cat/text.svg)}.cat-developer{background-image:url(/assets/img/cat/developer.svg)}.cat-converters{background-image:url(/assets/img/cat/converters.svg)}.cat-health{background-image:url(/assets/img/cat/health.svg)}.gradient-preview{height:96px;border:1px solid var(--line);border-radius:8px;margin-bottom:10px}.card[class*=cat-]{background-repeat:no-repeat;background-position:right -35px bottom -35px;background-size:123px}main.shell[class*=cat-]{background-repeat:no-repeat;background-position:right -30px bottom 24px;background-size:300px}.breadcrumb{font-size:13px;color:var(--muted);padding:14px 0 0}.breadcrumb a{color:var(--muted);text-decoration:none}.breadcrumb a:hover{color:var(--accent-strong);text-decoration:underline}.breadcrumb .sep{margin:0 7px;color:var(--line)}.breadcrumb [aria-current=page]{color:var(--text)}.cat-group{position:relative}.cat-head{margin:22px 0 2px;font-size:14px;text-transform:uppercase;letter-spacing:.05em;color:var(--muted)}.cat-head a{color:var(--muted);text-decoration:none}.cat-head a:hover{color:var(--accent-strong)}.cat-group .grid{padding:12px 0 10px}.related-group{margin-bottom:16px}.related-group h3{margin:0 0 6px;font-size:14px;color:var(--text)}.related-group h3 a{color:var(--text);text-decoration:none}.related-group h3 a:hover{color:var(--accent-strong);text-decoration:underline}.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}