:root{--color-primary:#166534;--color-primary-dark:#14532d;--color-primary-soft:#ecfdf5;--color-accent:#f59e0b;--color-accent-soft:#fffbeb;--color-text:#17201a;--color-text-soft:#5d675f;--color-background:#f7f9f7;--color-surface:#ffffff;--color-border:#dfe5df;--shadow-card:0 12px 35px rgba(20,40,25,0.08);--shadow-soft:0 5px 18px rgba(20,40,25,0.06);--radius-large:22px;--radius-medium:14px;--radius-small:10px;--container:1130px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--color-background);color:var(--color-text);font-family:"Anek Bangla","Nirmala UI","Segoe UI",Arial,sans-serif;line-height:1.6;font-weight:400;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased}button,input{font:inherit}button{cursor:pointer}a{color:inherit;text-decoration:none}.site-header{background:rgba(255,255,255,0.96);border-bottom:1px solid var(--color-border);position:sticky;top:0;z-index:100;backdrop-filter:blur(12px)}.header-inner{width:min(100% - 40px,var(--container));min-height:72px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;gap:30px}.brand{display:flex;align-items:center;gap:11px;font-size:1.55rem;font-weight:700;letter-spacing:-0.02em;color:var(--color-primary)}.brand-mark{width:38px;height:38px;display:grid;place-items:center;border-radius:11px;background:var(--color-primary);color:white;font-size:1.25rem;font-weight:700}.main-nav{display:flex;align-items:center;gap:8px}.main-nav a{padding:8px 13px;border-radius:9px;color:var(--color-text-soft);font-size:0.95rem;font-weight:600}.main-nav a:hover{background:var(--color-primary-soft);color:var(--color-primary)}.main-nav-dropdown{position:relative}.main-nav-dropdown-toggle{display:inline-flex;align-items:center;gap:5px;border:0;background:transparent;color:var(--color-text-soft);font:inherit;font-size:0.95rem;font-weight:600;padding:8px 13px;border-radius:9px}.main-nav-dropdown-toggle:hover,.main-nav-dropdown-toggle.active,.main-nav-dropdown-toggle:focus-visible{background:var(--color-primary-soft);color:var(--color-primary);outline:none}.main-nav-dropdown-chevron{display:inline-block;font-size:0.9em;line-height:1;transform:translateY(-1px);transition:transform 0.16s ease}.main-nav-dropdown.is-open .main-nav-dropdown-chevron{transform:rotate(180deg) translateY(1px)}.main-nav-dropdown-menu{position:absolute;top:calc(100% + 8px);right:0;min-width:155px;padding:6px;border:1px solid var(--color-border);border-radius:12px;background:#fff;box-shadow:0 10px 28px rgba(30,55,40,0.12);z-index:120}.main-nav-dropdown-menu a{display:block;padding:9px 12px;border-radius:8px;color:var(--color-text-soft);font-size:0.94rem;font-weight:600;white-space:nowrap}.main-nav-dropdown-menu a:hover,.main-nav-dropdown-menu a.active,.main-nav-dropdown-menu a:focus-visible{background:var(--color-primary-soft);color:var(--color-primary);outline:none}main{min-height:calc(100vh - 73px)}.hero{width:min(100% - 40px,var(--container));min-height:calc(100vh - 73px);margin:0 auto;padding:48px 0 70px;display:flex;align-items:center}.hero-grid{width:100%;display:grid;grid-template-columns:minmax(0,1.08fr) minmax(0,0.92fr);gap:34px;align-items:stretch}.hero-content{padding:clamp(20px,4vw,62px) 0;display:flex;flex-direction:column;justify-content:center}.eyebrow{display:inline-flex;width:fit-content;margin-bottom:16px;padding:6px 11px;border-radius:999px;background:var(--color-primary-soft);color:var(--color-primary);font-size:0.85rem;font-weight:700}.hero h1{margin:0;max-width:760px;font-size:clamp(2.3rem,4vw,3.8rem);line-height:1.12;letter-spacing:-0.018em}.hero h1 span{color:var(--color-primary)}.hero-description{max-width:680px;margin:22px 0 30px;color:var(--color-text-soft);font-size:clamp(1rem,1.5vw,1.2rem)}.search-box{max-width:620px;display:flex;align-items:center;padding:7px;background:var(--color-surface);border:1px solid var(--color-border);border-radius:14px;box-shadow:var(--shadow-soft)}.search-box input{flex:1;min-width:0;padding:13px 15px;border:0;outline:0;background:transparent;color:var(--color-text)}.search-box button{padding:12px 19px;border:0;border-radius:9px;background:var(--color-primary);color:white;font-weight:700}.search-box button:hover{background:var(--color-primary-dark)}.btn-primary{padding:11px 16px;border-radius:var(--radius-small);font-weight:700}.btn-primary{flex:1;border:0;background:var(--color-primary);color:white}.btn-primary:hover{background:var(--color-primary-dark)}.section-heading{margin-bottom:22px}.section-heading h2{margin:0;font-size:clamp(1.5rem,3vw,2.1rem)}.section-heading p{margin:6px 0 0;color:var(--color-text-soft)}.site-footer{border-top:1px solid var(--color-border);background:white}.footer-inner{width:min(100% - 40px,var(--container));margin:0 auto;padding:28px 0;display:flex;justify-content:space-between;gap:20px;color:var(--color-text-soft);font-size:0.86rem}@media (max-width:1000px){.hero-grid{grid-template-columns:1fr}.hero{min-height:auto;padding-top:35px}.hero-content{padding:10px 0}}@media (max-width:700px){.header-inner{width:min(100% - 24px,var(--container));min-height:64px}.main-nav{display:none}.brand{font-size:1.35rem}.hero{width:min(100% - 24px,var(--container))}.hero{padding-top:25px;padding-bottom:50px}.hero h1{font-size:clamp(2.15rem,11vw,3rem)}.search-box{flex-direction:column;align-items:stretch}.search-box button{width:100%}.footer-inner{width:min(100% - 24px,var(--container));flex-direction:column}}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before{transition:none !important}}.container{width:min(100% - 40px,var(--container));margin:0 auto}.logo{display:inline-flex;align-items:center;gap:8px;color:var(--color-primary);font-size:1.55rem;font-weight:700;letter-spacing:-0.02em}.logo span{color:var(--color-primary)}.calc-page{padding:38px 0 80px}.calc-container{max-width:var(--container)}.calc-breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:7px;margin-bottom:30px;color:#66736a;font-size:1rem}.calc-breadcrumb a{color:#526259}.calc-breadcrumb a:hover{color:var(--color-primary)}.calc-layout{width:min(100%,var(--container));display:grid;grid-template-columns:minmax(0,1fr) minmax(360px,400px);gap:50px;align-items:start}.calc-information{padding:6px 0 12px}.calc-information h1{max-width:720px;margin:0 0 18px;color:var(--color-text);font-size:clamp(2.15rem,4vw,3.2rem);line-height:1.15;letter-spacing:-0.025em}.calc-lead{max-width:760px;margin:0 0 42px;color:#536158;font-size:1.18rem;line-height:1.82}.calc-information h2{margin:42px 0 12px;color:var(--color-text);font-size:clamp(1.35rem,2.2vw,1.7rem);line-height:1.3}.calc-information p{max-width:760px;margin:0;color:#4e5b53;font-size:1.06rem;line-height:1.85}.calculator-panel{position:sticky;top:96px;padding:28px 28px 24px;background:#fff;border:1px solid #dfe6e0;border-radius:18px;box-shadow:0 16px 42px rgba(20,40,25,.09)}.calculator-panel-heading{margin-bottom:23px}.calculator-kicker{margin-bottom:5px;color:var(--color-primary);font-size:.9rem;font-weight:700}.calculator-panel-heading h2{margin:0 0 4px;color:var(--color-text);font-size:1.4rem;line-height:1.3}.calculator-panel-heading p{margin:0;color:#66736a;font-size:.94rem;line-height:1.55}.calc-field{margin-bottom:17px}.calc-field label{display:block;margin-bottom:7px;color:#26332b;font-size:.94rem;font-weight:600}.calc-row{display:grid;grid-template-columns:minmax(0,1fr) 154px;gap:10px}.calc-input,.calc-select{width:100%;height:48px;min-height:48px;max-height:48px;box-sizing:border-box;border:1px solid #cbd5ce;border-radius:10px;background:#fff;padding:8px 12px;color:#172033;font:inherit;font-size:.95rem}.calc-input:focus,.calc-select:focus{outline:3px solid rgba(22,101,52,.12);border-color:var(--color-primary)}.calc-note{margin-top:8px;color:#68756c;font-size:.88rem;line-height:1.55}.calc-actions{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:9px;margin-top:7px}.calc-button{min-height:46px;border:0;border-radius:10px;padding:8px 17px;font:inherit;font-size:.95rem;font-weight:600;cursor:pointer}.calc-button.primary{background:var(--color-primary);color:#fff}.calc-button.primary:hover{background:var(--color-primary-dark)}.calc-button.secondary{border:1px solid #d6ded8;background:#fff;color:#4d5a51}.calc-button.secondary:hover{background:#f7faf8}.calc-error{min-height:0;margin-top:0;color:#b42318;font-size:.89rem}.calc-error:empty{display:none}.calc-error:not(:empty){margin-top:7px}.calc-result{margin-top:13.2px;padding:19px;border:1px solid #cce5d3;border-radius:13px;background:var(--color-primary-soft)}.calc-result-label{margin-bottom:4px;color:#4f6255;font-size:.9rem}.calc-result-main{color:var(--color-primary-dark);font-size:clamp(1.5rem,3.5vw,1.875rem);font-weight:700;line-height:1.25}.calc-result-list{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:15px}.calc-result-item{padding:9px 10px;border:1px solid rgba(22,101,52,.09);border-radius:9px;background:rgba(255,255,255,.76)}.calc-result-item strong{display:block;color:#172033;font-size:1rem;line-height:1.35}.calc-result-item span{display:block;margin-top:2px;color:#66736a;font-size:.84rem}.unit-table{width:100%;max-width:760px;margin-top:20px;border-collapse:collapse;font-size:1rem}.unit-table th,.unit-table td{padding:12px 10px;border-bottom:1px solid #e1e7e2;text-align:left}.unit-table th{color:#334139;font-weight:600;background:#f8faf8}.unit-table td{color:#4e5b53}.source-note{max-width:760px;margin-top:25px;padding:18px 20px;border-left:3px solid #8bb99a;background:#f4f8f5;color:#526057;font-size:.98rem;line-height:1.75}.source-note strong{color:#314238}.source-note span{display:block;margin-top:8px;color:#68756c;font-size:.9rem}.info-card{background:#fff;border:1px solid #e1e7e2;border-radius:18px;padding:30px 32px}.faq{margin-top:58px}.faq h2,.related h2{margin:0 0 13px;color:var(--color-text);font-size:1.55rem}.faq details{border-top:1px solid #e3e8e4;padding:12px 0}.faq details:last-child{border-bottom:1px solid #e3e8e4}.faq summary{cursor:pointer;color:#27342c;font-size:1.02rem;font-weight:600}.faq p{max-width:800px;margin:8px 0 0;color:#59665e;font-size:1rem;line-height:1.75}.related{margin-top:48px}.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.related-card{padding:18px;border:1px solid #e1e7e2;border-radius:14px;background:#fff;color:#29372f;font-size:1rem;font-weight:600}.related-card:hover{border-color:#b9d0bf;background:#fbfdfb}@media (max-width:1000px){.calc-layout{grid-template-columns:minmax(0,1fr) minmax(330px,390px);gap:28px}.calculator-panel{padding:25px 25px 21px}}@media (max-width:820px){.calc-layout{grid-template-columns:1fr}.calculator-panel{position:static;order:-1}.calc-information{padding-top:4px}}@media (max-width:560px){.container{width:min(100% - 24px,var(--container))}.calc-page{padding-top:25px;padding-bottom:55px}.calc-breadcrumb{margin-bottom:22px;font-size:.92rem}.calc-information h1{font-size:clamp(1.85rem,8vw,2.35rem)}.calc-lead{margin-bottom:30px;font-size:1.08rem}.calc-information h2{margin-top:34px}.calculator-panel,.info-card{padding:21px;border-radius:15px}.calculator-panel{padding-bottom:18px}.calc-row{grid-template-columns:1fr}.calc-actions{grid-template-columns:1fr}.calc-result-list,.related-grid{grid-template-columns:1fr}}.faq h2{margin-bottom:10px}.faq details{padding:10px 0}.faq summary{line-height:1.45}.faq p{margin-top:8px}body{font-family:"Anek Bangla","Nirmala UI","Segoe UI",Arial,sans-serif;line-height:1.62}.header-inner{min-height:64px}.brand,.logo{font-size:1.28rem}.main-nav a{font-size:.92rem;padding:7px 11px}.main-nav-dropdown-toggle{font-size:.92rem;padding:7px 11px}.main-nav-dropdown-menu a{font-size:.92rem;padding:8px 11px}.calc-information h1{font-size:clamp(1.9rem,3vw,2.5rem);line-height:1.18;margin-bottom:14px}.calc-information h2{font-size:clamp(1.22rem,1.75vw,1.46rem);line-height:1.34;margin-top:36px}.calc-lead{font-size:1.12rem;line-height:1.78}.calc-information p{font-size:1.02rem;line-height:1.8}.faq h2,.related h2{font-size:1.45rem}.faq summary{font-size:1rem}.category-page{padding:34px 0 70px}.category-container{max-width:var(--container)}@media (max-width:620px){.category-page{padding-top:25px}}.category-intro{max-width:var(--container);padding:22px 0 34px}.category-intro h1{margin:0 0 10px;color:var(--color-text);font-size:clamp(1.8rem,2.8vw,2.35rem);line-height:1.18;letter-spacing:-0.02em}.category-intro p{max-width:850px;margin:0;color:#536158;font-size:1.08rem;line-height:1.78}.category-tools{max-width:var(--container);padding:0 0 72px}.calc-information h1{font-size:clamp(1.8rem,2.8vw,2.35rem);line-height:1.18}.calc-information h2{font-size:clamp(1.2rem,1.65vw,1.42rem)}@media (max-width:620px){.category-intro{padding-top:12px;padding-bottom:28px}.category-intro h1{font-size:1.9rem}.category-intro p{font-size:1.02rem}.category-tools{padding-bottom:25px}}.hero h1,.category-intro h1,.calc-information h1{font-size:24px;line-height:1.3;letter-spacing:-0.012em}.category-intro .category-count{margin:0;color:#68756c;font-size:1rem;line-height:1.5}.hero h1,.category-intro h1,.calc-information h1{font-size:24px;line-height:1.3;letter-spacing:-0.012em}.calc-information h2{font-size:20px;line-height:1.4}.category-intro{padding-bottom:26px}.category-intro .category-count{max-width:850px;margin:0;color:#536158;font-size:1rem;line-height:1.65}.category-tools{padding-top:0}.formula-box{margin:20px 0 24px;padding:16px 18px;border-left:3px solid var(--color-primary);background:#f5f8f5;color:#334238;border-radius:0 10px 10px 0}.formula-box strong{display:block;margin-bottom:5px;color:#1d3024}.formula-box div{font-size:1.03rem}@media (max-width:620px){.formula-box{margin-top:16px;padding:14px 15px}}.hero h1{font-size:clamp(2.3rem,4vw,3.8rem);line-height:1.15;letter-spacing:-0.025em}.category-intro h1,.calc-information h1{font-size:24px !important;line-height:1.3;letter-spacing:-0.012em}@media (max-width:560px){.category-intro h1,.calc-information h1{font-size:24px !important}}.calculator-kicker{display:none}.calculator-panel-heading h2{font-size:20px;line-height:1.4}.hero h1{font-size:clamp(2.7rem,5vw,4.5rem);line-height:1.12;letter-spacing:-0.025em}.calculator-kicker{display:none !important}@media (max-width:560px){.hero h1{font-size:clamp(2.55rem,12vw,3.4rem)}.category-intro h1,.calc-information h1{font-size:24px !important}}.calc-information h1{font-size:24px !important;line-height:1.3;letter-spacing:-0.012em}.result-formula-used{margin-top:14px;padding-top:12px;border-top:1px solid rgba(22,101,52,.12);color:#536158;font-size:.9rem;line-height:1.55}.field-optional{color:#77837b;font-size:.88em;font-weight:400}.calc-subrow{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:12px}.calc-subrow.three{grid-template-columns:1fr 1fr 1fr;margin-top:0}.calc-subfield label{display:block;margin:0 0 6px;color:#68756c;font-size:.82rem;font-weight:400}.calc-input:disabled{opacity:.55;background:#f2f5f3;cursor:not-allowed}.calc-unit-static{display:flex;align-items:center;justify-content:center;width:100%;height:48px;min-height:48px;max-height:48px;box-sizing:border-box;padding:8px 14px;border:1px solid #cbd5ce;border-radius:10px;background:#f6f8f7;color:#526259;font:inherit;font-size:.95rem}.calc-divider{height:1px;margin:25px 0 22px;background:#e2e8e3}@media (max-width:560px){.calc-subrow,.calc-subrow.three{grid-template-columns:1fr}}.optional-label{font-size:.86em;font-weight:400;color:#758079}.related{margin-top:52px;padding:26px;background:#fbfdfb;border:1px solid #e0e8e2;border-radius:18px;box-shadow:0 8px 24px rgba(34,58,43,0.07)}.related h2{margin:0 0 6px}.related-intro{margin:0 0 18px;color:#68756c;font-size:.98rem;line-height:1.65}.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.related-card{display:block;padding:18px 19px;border:1px solid #dbe5de;border-radius:14px;background:#fff;color:#29372f;font-size:1rem;font-weight:700;text-decoration:none;box-shadow:0 3px 10px rgba(34,58,43,0.045);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease,background-color .18s ease}.related-card span{display:block;margin-top:5px;color:#6a766e;font-size:.88rem;font-weight:400;line-height:1.5}.related-card:hover{transform:translateY(-2px);border-color:#b9d0bf;background:#fff;box-shadow:0 8px 18px rgba(34,58,43,0.09)}.related-card:focus-visible{outline:3px solid rgba(45,122,72,0.22);outline-offset:2px}@media (max-width:820px){.related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (max-width:560px){.related{padding:21px;border-radius:15px}.related-grid{grid-template-columns:1fr}}:root{--color-mint-panel:#effaf3;--color-mint-border:#d2e8d8;--color-mint-deep:#dcefe2;--shadow-related:0 10px 28px rgba(22,101,52,0.07);--shadow-related-card:0 4px 14px rgba(34,58,43,0.055)}.related{margin-top:52px;padding:27px 28px 29px;background:linear-gradient(180deg,var(--color-mint-panel) 0%,#f7fcf8 100%);border:1px solid var(--color-mint-border);border-radius:19px;box-shadow:var(--shadow-related)}.related-heading-row{display:flex;align-items:flex-start;justify-content:space-between;gap:22px}.related h2{margin:0;color:var(--color-text);font-size:1.45rem;line-height:1.35}.related-all-link{flex:0 0 auto;display:inline-flex;align-items:center;gap:6px;margin-top:3px;color:var(--color-primary);font-size:.94rem;font-weight:600;white-space:nowrap}.related-all-link span{font-size:1.05em;transition:transform .18s ease}.related-all-link:hover span{transform:translateX(3px)}.related-all-link:focus-visible{outline:3px solid rgba(45,122,72,.2);outline-offset:4px;border-radius:5px}.related-intro{margin:5px 0 19px;color:#68756c;font-size:.98rem;line-height:1.65}.related-card{min-width:0;display:flex;align-items:center;gap:13px;padding:16px 16px 16px 14px;border:1px solid #d9e6dd;border-radius:15px;background:rgba(255,255,255,.92);color:var(--color-text);text-decoration:none;box-shadow:var(--shadow-related-card);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease,background-color .18s ease}.related-card-icon{flex:0 0 42px;width:42px;height:42px;display:grid;place-items:center;border:1px solid #d4ebda;border-radius:13px;background:#e5f5e9;color:var(--color-primary);font-size:1.15rem;font-weight:700;line-height:1}.related-card-content{min-width:0;flex:1 1 auto}.related-card-content>strong{display:block;color:#24332a;font-size:.99rem;font-weight:700;line-height:1.4}.related-card-content>span{display:block;margin-top:3px;color:#6a766e;font-size:.84rem;font-weight:400;line-height:1.48}.related-card-arrow{flex:0 0 34px;width:34px;height:34px;display:grid;place-items:center;border-radius:50%;background:#e7f5eb;color:var(--color-primary);font-size:1.08rem;line-height:1;transition:transform .18s ease,background-color .18s ease}.related-card:hover{transform:translateY(-3px);border-color:#b9d8c1;background:#fff;box-shadow:0 10px 22px rgba(34,58,43,.10)}.related-card:hover .related-card-arrow{transform:translateX(2px);background:#dff1e4}.related-card:focus-visible{outline:3px solid rgba(45,122,72,.22);outline-offset:2px}.site-footer{margin-top:48px;border-top:1px solid #dfe8e1;background:#fff}.footer-inner{width:min(100% - 40px,var(--container));margin:0 auto;padding:46px 0 40px;display:grid;grid-template-columns:minmax(0,1.55fr) repeat(3,minmax(135px,.72fr));gap:48px}.footer-brand{max-width:390px}.footer-logo{display:inline-flex;align-items:center;color:var(--color-primary);font-size:2.05rem;font-weight:700;line-height:1.05;letter-spacing:-.025em}.footer-logo-image{display:block;width:auto;height:36px;max-width:min(210px,100%);object-fit:contain}.footer-tagline{margin:8px 0 7px;color:#2e4035;font-size:1rem;font-weight:600}.footer-description{margin:0;color:#6a766e;font-size:.92rem;line-height:1.7}.footer-column{display:flex;flex-direction:column;align-items:flex-start}.footer-column h2{margin:3px 0 12px;color:#25342b;font-size:16px;line-height:1.4}.footer-column a{padding:3px 0;color:#68756c;font-size:.92rem;line-height:1.55}.footer-column a{transition:color .15s ease,transform .15s ease}.footer-column a:hover{color:var(--color-primary);transform:translateX(2px)}.footer-column a:focus-visible{outline:3px solid rgba(45,122,72,.18);outline-offset:3px;border-radius:4px}.footer-bottom{min-height:56px;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:14px max(20px,calc((100% - var(--container)) / 2));border-top:1px solid #e1e9e3;background:#eff9f2;color:#5f6d64;font-size:.83rem}.footer-bottom div:last-child{color:var(--color-primary);font-weight:400}@media (max-width:820px){.related-heading-row{gap:15px}.related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.footer-inner{grid-template-columns:1.2fr 1fr 1fr;gap:28px}.footer-brand{grid-column:1 / -1;max-width:620px}}@media (max-width:560px){.related{margin-top:42px;padding:22px 18px 20px;border-radius:16px}.related-heading-row{flex-direction:column;gap:8px}.related-all-link{margin-top:0}.related-intro{margin-bottom:15px;font-size:.92rem}.related-grid{grid-template-columns:1fr;gap:10px}.related-card{padding:14px 13px}.related-card-icon{flex-basis:40px;width:40px;height:40px}.related-card-arrow{flex-basis:32px;width:32px;height:32px}.site-footer{margin-top:40px}.footer-inner{width:min(100% - 32px,var(--container));grid-template-columns:1fr 1fr;gap:28px 22px;padding:34px 0 30px}.footer-brand{grid-column:1 / -1}.footer-logo{font-size:1.85rem}.footer-logo-image{height:32px;max-width:min(190px,100%)}.footer-bottom{flex-direction:column;align-items:flex-start;gap:4px;padding:13px 16px;font-size:.79rem}}.related{margin-top:52px;padding:27px 28px 29px;background:#effaf3;border:1px solid #d2e8d8;border-radius:19px;box-shadow:0 10px 28px rgba(22,101,52,0.07)}.related-heading-row{display:flex;align-items:center;justify-content:space-between;gap:22px}.related-intro{margin:6px 0 20px;color:#68756c;font-size:.98rem;line-height:1.6}.related-all-link{flex:0 0 auto;display:inline-flex;align-items:center;gap:6px;color:var(--color-primary);font-size:.94rem;font-weight:600;white-space:nowrap}.related-card{min-width:0;min-height:84px;display:flex;align-items:center;gap:14px;padding:16px 16px 16px 14px;border:1px solid #d9e6dd;border-radius:15px;background:#fff;color:var(--color-text);text-decoration:none;box-shadow:0 4px 14px rgba(34,58,43,0.055);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}.related-card-icon{flex:0 0 48px;width:48px;height:48px;display:grid;place-items:center;border:1px solid #d2ead8;border-radius:13px;background:#e3f4e8;color:var(--color-primary)}.related-icon-svg{width:27px;height:27px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}.related-icon-svg rect{fill:none}.related-card-arrow{flex:0 0 36px;width:36px;height:36px;display:grid;place-items:center;border-radius:50%;background:#e4f4e9;color:var(--color-primary);font-size:1.08rem;line-height:1;transition:transform .18s ease,background-color .18s ease}.related-card:hover{transform:translateY(-3px);border-color:#b9d8c1;box-shadow:0 10px 22px rgba(34,58,43,.10)}@media (max-width:820px){.related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (max-width:560px){.related{margin-top:42px;padding:22px 18px 20px;border-radius:16px}.related-heading-row{align-items:flex-start;flex-direction:column;gap:8px}.related-intro{margin-bottom:15px;font-size:.92rem}.related-grid{grid-template-columns:1fr;gap:10px}.related-card{min-height:78px;padding:14px 13px}.related-card-icon{flex-basis:42px;width:42px;height:42px}.related-icon-svg{width:24px;height:24px}.related-card-arrow{flex-basis:32px;width:32px;height:32px}}.site-footer{margin-top:72px}.footer-inner{width:min(100% - 40px,var(--container))}@media (max-width:560px){.site-footer{margin-top:40px}.footer-inner{width:min(100% - 32px,var(--container))}}.site-header .brand{display:inline-flex;align-items:center;gap:10px;color:var(--color-primary);font-size:1.55rem;font-weight:700;line-height:1;letter-spacing:-0.02em;white-space:nowrap}.site-header .brand-mark{width:auto;height:auto;display:inline;border-radius:0;background:transparent;color:var(--color-primary);font-size:inherit;font-weight:700;line-height:1}.site-header .brand-logo-image{display:block;width:auto;height:34px;max-width:min(200px,40vw);object-fit:contain}.site-header .brand>span:last-child{color:var(--color-primary)}.related-card-icon{display:flex;align-items:center;justify-content:center;flex:0 0 48px;width:48px;height:48px;line-height:0}.related-icon-svg,.related-arrow-svg,.related-all-arrow-svg{display:block;overflow:visible}.related-icon-svg{width:26px;height:26px}.related-card-arrow{display:flex;align-items:center;justify-content:center;flex:0 0 36px;width:36px;height:36px;line-height:0}.related-arrow-svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}.related-all-link>span{display:inline-flex;align-items:center;justify-content:center;width:18px;height:18px;line-height:0}.related-all-arrow-svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}.related-all-link:hover .related-all-arrow-svg{transform:translateX(2px)}@media (max-width:560px){.site-header .brand{font-size:1.28rem;gap:9px}.related-card-icon{flex-basis:42px;width:42px;height:42px}.related-icon-svg{width:24px;height:24px}.related-card-arrow{flex-basis:32px;width:32px;height:32px}.related-arrow-svg{width:17px;height:17px}}.related-card>span.related-card-icon{display:grid;place-items:center;flex:0 0 48px;width:48px;height:48px;margin:0;padding:0;line-height:0;align-self:center}.related-card>span.related-card-arrow{display:grid;place-items:center;flex:0 0 36px;width:36px;height:36px;margin:0;padding:0;line-height:0;align-self:center}.related-card-icon .related-icon-svg,.related-card-arrow .related-arrow-svg{display:block;margin:0;padding:0;align-self:center;justify-self:center}@media (max-width:560px){.related-card>span.related-card-icon{flex-basis:40px;width:40px;height:40px}.related-card>span.related-card-arrow{flex-basis:32px;width:32px;height:32px}}.calc-page+.site-footer{margin-top:42px}@media (max-width:560px){.calc-page+.site-footer{margin-top:32px}}.home-popular-section{padding-top:0;padding-bottom:72px}.popular-empty{padding:22px 24px;border:1px solid var(--color-border);border-radius:var(--radius-medium);background:#f8fbf9;color:var(--color-text-soft);font-size:.98rem;line-height:1.7}.category-chart-section{width:min(100% - 40px,var(--container));margin:0 auto;padding:8px 0 60px}.category-chart{display:grid;gap:10px}.category-chart-row{display:grid;grid-template-columns:130px minmax(0,1fr) 55px;align-items:center;gap:14px;min-height:40px;padding:5px 10px;border:1px solid transparent;border-radius:12px;color:inherit;transition:background .18s ease,border-color .18s ease}.category-chart-row:hover{background:#f7fbf8;border-color:var(--color-border)}.category-chart-label{color:var(--color-text);font-weight:600}.category-chart-track{display:block;height:14px;overflow:hidden;border-radius:999px;background:#edf3ee}.category-chart-bar{display:block;height:100%;border-radius:inherit;background:var(--color-primary)}.category-chart-count{color:var(--color-text-soft);font-size:.94rem;text-align:right;white-space:nowrap}@media (max-width:700px){.category-chart-section{width:min(100% - 24px,var(--container));padding-bottom:44px}.category-chart-row{grid-template-columns:92px minmax(0,1fr) 42px;gap:9px;padding-left:6px;padding-right:6px}.category-chart-count{font-size:.88rem}}.search-box{position:relative}.calculator-search-results{margin-top:8px;width:100%;max-width:560px;background:#fff;border:1px solid #dbe6df;border-radius:12px;box-shadow:0 10px 28px rgba(25,70,40,.10);overflow:hidden;z-index:20}.calculator-search-results a{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:12px 15px;color:var(--color-text);text-decoration:none;border-bottom:1px solid #edf2ee}.calculator-search-results a:last-child{border-bottom:0}.calculator-search-results a:hover,.calculator-search-results a:focus-visible{background:#f1f8f3;outline:none}.calculator-search-results strong{font-size:1rem}.calculator-search-results span{color:#6d7971;font-size:.9rem;white-space:nowrap}.search-no-results{padding:13px 15px;color:#6d7971}.calculator-search-results[hidden]{display:none}.hero-content{position:relative;z-index:3}.calculator-search-results{position:relative;z-index:30}.search-box{position:relative;max-width:620px}.search-input-wrap{position:relative;flex:1;min-width:0;display:flex;align-items:center}.search-input-wrap input{width:100%}.calculator-search-results{margin-top:8px;width:100%;max-width:620px;background:#fff;border:1px solid #dbe6df;border-radius:12px;box-shadow:0 10px 28px rgba(25,70,40,.10);overflow:hidden}.calculator-search-results a{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:12px 15px;color:var(--color-text);text-decoration:none;border-bottom:1px solid #edf2ee}.calculator-search-results a:last-child{border-bottom:0}.calculator-search-results a:hover,.calculator-search-results a:focus-visible,.calculator-search-results a.is-active{background:#f1f8f3;outline:none}.calculator-search-results strong{font-size:1rem}.search-result-category{flex:0 0 auto;color:#718077;font-size:.86rem;white-space:nowrap}.search-no-results{padding:13px 15px;color:#66736a}.search-no-results strong{color:var(--color-text)}.search-no-results span{display:block;font-size:.86rem;margin-top:2px}.section-heading p:empty{display:none}@media (max-width:700px){.search-box{max-width:none}.calculator-search-results{max-width:none}.search-result-category{font-size:.82rem}}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.header-search{flex:0 1 330px;width:min(330px,100%);max-width:330px;display:flex;align-items:center;gap:8px;position:relative;padding:7px;background:var(--color-surface);border:1px solid var(--color-border);border-radius:14px;box-shadow:var(--shadow-soft)}.header-search .search-input-wrap{flex:1 1 auto;min-width:0}.header-search input[type="search"]{display:block;width:100%;height:38px;padding:6px 12px;border:1px solid #d5e1d9;border-radius:10px;background:#fff;color:var(--color-text);font:inherit;font-size:.91rem;outline:none;box-sizing:border-box}.header-search input[type="search"]:focus{border-color:#9fc4aa;box-shadow:0 0 0 3px rgba(22,101,52,.08)}.header-search button{flex:0 0 auto;height:38px;padding:6px 14px;border:1px solid var(--color-primary);border-radius:10px;background:var(--color-primary);color:#fff;font:inherit;font-size:.90rem;font-weight:600;cursor:pointer}.header-search button:hover{background:var(--color-primary-dark)}.header-search .calculator-search-results{position:absolute;top:calc(100% + 7px);left:0;width:100%;max-width:none;margin-top:0;z-index:120}.header-search .calculator-search-results a{padding:11px 13px}.header-search .calculator-search-results strong{font-size:.94rem}.header-search .search-result-category{font-size:.82rem}@media (max-width:1000px){.header-search{flex-basis:280px;max-width:280px}}@media (max-width:700px){.header-inner{gap:10px}.header-search{flex:1 1 auto;width:auto;max-width:none;margin-left:auto}.header-search input[type="search"],.header-search button{height:36px}.header-search button{padding-left:11px;padding-right:11px}}@media (max-width:430px){.header-search{max-width:210px}.header-search{gap:5px}.header-search input[type="search"]{font-size:.84rem;padding-left:9px;padding-right:9px}.header-search button{font-size:.83rem;padding-left:9px;padding-right:9px}}.home-hero-single{grid-template-columns:minmax(0,920px);justify-content:center}.home-hero-single .hero-content{align-items:center;text-align:center;padding:clamp(26px,5vw,72px) 0 clamp(34px,6vw,82px)}.home-hero-single .hero h1,.home-hero-single .hero-description{max-width:900px}.home-hero-single .hero-description{margin-left:auto;margin-right:auto}.home-calculators-section{width:min(100% - 40px,var(--container));margin:0 auto;padding:0 0 24px}.home-calculators-heading{margin-bottom:22px}.home-calculators-heading h2{font-size:clamp(1.5rem,3vw,2.1rem)}.home-calculators-total{margin:5px 0 0;color:var(--color-text-soft);font-size:0.9rem;line-height:1.5}.home-calculators-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}.category-calculator-grid{width:100%}.home-calculator-card{min-width:0;min-height:156px;padding:20px;display:flex;align-items:flex-start;gap:14px;position:relative;overflow:hidden;background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-medium);color:inherit;transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}.home-calculator-card:hover{transform:translateY(-3px);border-color:#c7d9cb;box-shadow:var(--shadow-soft)}.home-calculator-card:focus-visible{outline:3px solid rgba(45,122,72,.22);outline-offset:2px}.home-calculator-card-icon{flex:0 0 44px;width:44px;height:44px;display:grid;place-items:center;border-radius:12px;background:var(--color-primary-soft);color:var(--color-primary)}.home-calculator-card-icon svg{width:24px;height:24px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}.home-calculator-card-body{min-width:0;display:flex;flex-direction:column;padding-right:20px}.home-calculator-card-category{margin-bottom:4px;color:var(--color-text-soft);font-size:.8rem;font-weight:600}.home-calculator-card-body strong{color:var(--color-text);font-size:1.04rem;line-height:1.38}.home-calculator-card-description{margin-top:7px;color:var(--color-text-soft);font-size:.84rem;line-height:1.5}.home-calculator-card-arrow{position:absolute;right:15px;bottom:14px;width:25px;height:25px;display:grid;place-items:center;color:var(--color-primary)}.home-calculator-card-arrow svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;transition:transform .18s ease}.home-calculator-card:hover .home-calculator-card-arrow svg{transform:translateX(2px)}.home-calculators-more-wrap{margin-top:28px;display:flex;flex-direction:column;align-items:center;gap:7px}.home-calculators-more{min-height:46px;padding:9px 20px;border:1px solid var(--color-primary);border-radius:10px;background:var(--color-surface);color:var(--color-primary);font-weight:700;transition:background .18s ease,color .18s ease,border-color .18s ease}.home-calculators-more:hover{background:var(--color-primary);color:#fff}.home-calculators-more:focus-visible{outline:3px solid rgba(45,122,72,.22);outline-offset:2px}.home-calculators-more-count{color:var(--color-text-soft);font-size:.84rem}.home-calculators-grid .home-calculator-card[hidden]{display:none}@media (max-width:1000px){.home-calculators-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}@media (max-width:760px){.home-hero-single .hero-content{padding-top:16px}.home-calculators-section{width:min(100% - 24px,var(--container));padding-bottom:24px}.home-calculators-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:11px}.home-calculator-card{min-height:138px;padding:16px;gap:10px}.home-calculator-card-icon{flex-basis:38px;width:38px;height:38px;border-radius:10px}.home-calculator-card-icon svg{width:21px;height:21px}.home-calculator-card-body strong{font-size:.96rem}.home-calculator-card-description{display:none}.home-calculator-card-arrow{right:9px;bottom:8px}}@media (max-width:430px){.home-calculators-grid{grid-template-columns:1fr}.home-calculator-card{min-height:88px;align-items:center;padding:13px 15px}.home-calculator-card-body{padding-right:24px}.home-calculator-card-category{margin-bottom:1px}}.hero.home-hero{min-height:auto;padding-top:clamp(54px,8vw,92px);padding-bottom:clamp(46px,7vw,76px)}.hero.home-hero .hero-content{min-height:0}.home-hero-single .hero h1{font-size:clamp(2.7rem,5vw,4.5rem)}.home-calculators-section+.site-footer{margin-top:18px}@media (max-width:760px){.hero.home-hero{padding-top:46px;padding-bottom:53px}.home-hero-single .hero h1{font-size:clamp(2.25rem,11vw,3.2rem)}}.site-header .brand-logo-image{height:32.4px}.footer-logo-image{height:34.2px}.home-popular-section .section-heading h2,.category-chart-section .section-heading h2,.home-calculators-heading h2{font-size:24px}.hero.home-hero{padding-top:clamp(33.6px,4.8vw,57.6px);padding-bottom:clamp(28.8px,4.8vw,52.8px)}.home-hero-single .hero-content{padding-top:0;padding-bottom:0}.site-footer,.calc-page+.site-footer{margin-top:18px}@media (max-width:560px){.site-footer,.calc-page+.site-footer{margin-top:18px}}.formula-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-top:18px}.formula-grid>div{padding:18px;border:1px solid #e1e7e2;border-radius:14px;background:#f7fbf8}.formula-grid strong,.formula-grid span,.formula-grid small{display:block}.formula-grid strong{margin-bottom:5px;color:var(--color-text)}.formula-grid span{font-weight:600;font-size:1.08rem;color:#176b4d}.formula-grid small{margin-top:4px;color:#68756d}@media (max-width:560px){.formula-grid{grid-template-columns:1fr}}.field-optional{font-size:.78em;color:#6b786f;font-weight:400;margin-left:4px}.optional-label{font-size:.78rem;color:#7a867e;font-weight:400}.calc-content-section{max-width:760px;margin:0}.calc-content-section+.calc-content-section{margin-top:42px}.calc-content-section p+p{margin-top:14px}.calc-content-section strong{color:#35403a}.calc-source-note{margin:24px 0 0;padding:14px 0;border-top:1px solid #e2e5e5;border-bottom:1px solid #e2e5e5;background:transparent;border-radius:0;color:#59625f;font-size:.92rem;line-height:1.75}.formula-box{max-width:760px;margin:22px 0 0;padding:16px 18px;border-left:3px solid #b7bcbc;background:#f6f7f7;color:#3f4747;border-radius:0 10px 10px 0;line-height:2}.formula-box strong{color:#303737}@media (max-width:560px){.calc-content-section+.calc-content-section{margin-top:34px}}.category-description{width:100%;max-width:none;box-sizing:border-box;margin-top:14px;color:#4f5d55;font-size:1.03rem;line-height:1.85}.category-description p{max-width:none;margin:0 0 10px}.category-description p:last-child{margin-bottom:0}.category-description-more{margin-top:8px}.category-description-more summary{display:inline-flex;align-items:center;gap:6px;color:#176b3a;font-weight:600;cursor:pointer;list-style:none;user-select:none}.category-description-more summary::-webkit-details-marker{display:none}.category-description-more summary::after{content:"↓";font-size:.9em;transition:transform .15s ease}.category-description-more[open] summary{display:none}.category-description-more[open] summary::after{transform:rotate(180deg)}.category-description-expanded{margin-top:8px}.category-description-expanded p{max-width:none;margin:0 0 10px}.category-description-expanded p:last-child{margin-bottom:0}@media (max-width:700px){.category-description{font-size:1rem;line-height:1.75}}.about-page{padding:34px 0 72px}.about-container{max-width:900px}.about-content{padding:8px 0 0}.about-header{margin-bottom:46px}.about-header h1{max-width:760px;margin:0 0 16px;color:var(--color-text);font-size:clamp(1.9rem,3vw,2.5rem);line-height:1.18;letter-spacing:-.025em}.about-lead{max-width:760px;margin:0;color:#536158;font-size:1.12rem;line-height:1.78}.about-content section{margin-top:38px}.about-content section:first-of-type{margin-top:0}.about-content h2{margin:0 0 11px;color:var(--color-text);font-size:clamp(1.22rem,1.75vw,1.46rem);line-height:1.34}.about-content p{max-width:760px;margin:0;color:#4e5b53;font-size:1.02rem;line-height:1.8}@media (max-width:560px){.about-page{padding-top:25px;padding-bottom:55px}.about-header{margin-bottom:36px}.about-lead{font-size:1.08rem}.about-content section{margin-top:32px}}.privacy-content{padding-bottom:8px}.privacy-content .about-header{margin-bottom:42px}.privacy-content section{margin-top:34px}.privacy-content section:first-of-type{margin-top:0}.privacy-content h2{margin-bottom:12px}.privacy-content p{max-width:780px}@media (max-width:560px){.privacy-content .about-header{margin-bottom:32px}.privacy-content section{margin-top:28px}}.contact-email-block{margin-top:18px}.contact-email-button{display:inline-flex;align-items:center;justify-content:center;flex:none;border:0;cursor:pointer;font:inherit}@media (max-width:560px){.contact-email-button{width:100%;box-sizing:border-box}}.calc-data-table{width:100%;max-width:760px;margin:22px 0 0;border-collapse:collapse;font-size:.96rem}.calc-data-table th,.calc-data-table td{padding:11px 12px;border-bottom:1px solid #e3e7e4;text-align:left;vertical-align:top}.calc-data-table th{background:#f6f7f7;color:#35403a;font-weight:600}.calc-data-table td{color:#536058}@media (max-width:560px){.calc-data-table{font-size:.9rem}.calc-data-table th,.calc-data-table td{padding:9px 8px}}.calc-layout>.calc-information{min-width:0}.calc-layout>.calculator-panel{min-width:0;width:100%;box-sizing:border-box}.calc-information .calc-content-section{max-width:760px;margin:0;padding:0;background:transparent !important;border:0 !important;border-radius:0 !important;box-shadow:none !important}.calc-information .calc-content-section+.calc-content-section{margin-top:42px}.calc-information .calc-content-section p{max-width:760px;margin:0;padding:0;background:transparent !important;border:0 !important;border-radius:0 !important;box-shadow:none !important;color:#4e5b53;font-size:1.02rem;line-height:1.8}.calc-information .calc-content-section p+p{margin-top:14px}.calc-information .calc-content-section ul{max-width:760px;margin:12px 0 0;padding-left:22px;color:#4e5b53;font-size:1.02rem;line-height:1.8}.calc-information .calc-content-section li+li{margin-top:8px}@media (max-width:560px){.calc-information .calc-content-section+.calc-content-section{margin-top:34px}}.calc-editorial-intro,.calc-editorial-section{margin:0 0 30px}.calc-editorial-section h2,.calc-editorial-intro h2{margin-top:0}.calc-editorial-list{margin:14px 0 0;padding-left:24px}.calc-editorial-list li{margin:0 0 9px;padding-left:4px}.calc-editorial-list li:last-child{margin-bottom:0}@media (max-width:700px){.calc-editorial-intro,.calc-editorial-section{margin-bottom:26px}}.hisheb-calculator{width:100%}.calc-display-wrap{min-height:104px;padding:15px 17px 12px;margin-bottom:14px;border:1px solid #dce7df;border-radius:15px;background:#f7faf8;box-sizing:border-box;display:flex;flex-direction:column;justify-content:flex-end;text-align:right;overflow:hidden}.calc-expression{min-height:22px;color:#7a857e;font-size:.9rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.calc-display{display:block;margin-top:4px;color:#1e2b24;font-size:clamp(2rem,4vw,2.65rem);line-height:1.1;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.calc-keypad{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:9px}.calc-key{min-height:54px;border:1px solid #dfe7e1;border-radius:13px;background:#fff;color:#26342c;font:600 1.05rem/1 Anek Bangla,sans-serif;cursor:pointer;box-shadow:0 2px 5px rgba(20,40,25,.035);transition:transform .12s ease,background .12s ease,border-color .12s ease}.calc-key:hover{background:#f6faf7;border-color:#cbd9d0}.calc-key:active{transform:translateY(1px)}.calc-key-muted{background:#f3f7f4;color:#59675f}.calc-key-function{background:#f2f6f3;color:#3f5147;font-size:.96rem}.calc-key-operator{background:#edf7f0;color:#176b3a;border-color:#d1e5d8}.calc-key-equals{background:#176b3a;color:#fff;border-color:#176b3a}.calc-key-zero{grid-column:span 2}.calc-mode-row{display:flex;justify-content:flex-end;gap:6px;margin:-3px 0 12px}.calc-small-toggle{border:1px solid #d8e4dc;border-radius:999px;background:#fff;color:#657169;padding:5px 11px;font:600 .8rem/1 Anek Bangla,sans-serif;cursor:pointer}.calc-small-toggle.is-active{background:#edf7f0;color:#176b3a;border-color:#c8dfd0}.calc-history{margin-top:16px;border-top:1px solid #e5ece7;padding-top:10px;display:grid;gap:5px}.calc-history-item{display:flex;justify-content:space-between;gap:12px;border:0;background:transparent;padding:7px 3px;color:#66736a;font:500 .86rem Anek Bangla,sans-serif;text-align:left;cursor:pointer}.calc-history-item strong{color:#26342c;font-weight:600}.calc-error{min-height:22px;margin-top:8px;color:#a33f36;font-size:.88rem;line-height:1.5}.home-utility-calculator{position:relative;margin:0;overflow:hidden;background:#f3faf6;border-top:1px solid #dfeae3;border-bottom:1px solid #dfeae3}.home-utility-inner{width:min(100% - 40px,var(--container));margin:0 auto;padding:38px 0;display:grid;grid-template-columns:minmax(0,1fr) minmax(360px,430px);gap:70px;align-items:center;position:relative;z-index:1}.home-utility-copy{position:relative}.home-utility-copy h2{max-width:570px;margin:0 0 17px;color:#203028;font-size:clamp(2rem,4vw,3.25rem);line-height:1.12;letter-spacing:-.02em}.home-utility-copy p{max-width:570px;margin:0 0 12px;color:#56645c;font-size:1.05rem;line-height:1.8}.home-utility-doodles{display:flex;gap:14px;margin-top:30px;color:#8a9890;font-size:1.4rem;transform:rotate(-3deg)}.home-utility-doodles span:nth-child(2){transform:translateY(7px) rotate(8deg)}.home-utility-doodles span:nth-child(3){transform:translateY(-4px) rotate(-5deg)}.home-utility-doodles span:nth-child(4){transform:translateY(6px) rotate(7deg)}.home-utility-glow{position:absolute;border-radius:50%;border:1px solid rgba(87,120,101,.11);pointer-events:none}.home-utility-glow-one{width:330px;height:330px;left:-150px;top:-90px}.home-utility-glow-two{width:440px;height:440px;right:-230px;bottom:-260px}.home-utility-widget{width:100%;max-width:430px;justify-self:end}.home-mini-calculator{padding:20px;border:1px solid #d9e5dd;border-radius:22px;background:rgba(255,255,255,.94);box-shadow:0 18px 45px rgba(35,62,45,.10)}.home-mini-calculator .calc-display-wrap{min-height:92px}.home-mini-calculator .calc-key{min-height:58px}.home-utility-calculator+.site-footer{margin-top:0}@media (max-width:820px){.home-utility-inner{grid-template-columns:1fr;gap:36px;padding:32px 0}.home-utility-widget{max-width:500px;justify-self:start}}@media (max-width:560px){.home-utility-inner{width:min(100% - 24px,var(--container));padding:30px 0}.home-utility-copy h2{font-size:2rem}.home-utility-copy p{font-size:1rem;line-height:1.7}.home-mini-calculator{padding:14px;border-radius:18px}.home-mini-calculator .calc-key{min-height:52px}.calc-key{min-height:50px}.calc-display-wrap{min-height:94px}.calc-keypad{gap:7px}.calc-mode-row{margin-bottom:10px}}.calculator-mode-option{display:inline-flex;align-items:center;justify-content:center;min-height:34px;padding:0 12px;border-radius:999px;color:#66736b;text-decoration:none;font:600 .84rem/1 "Anek Bangla",sans-serif;white-space:nowrap}.calculator-mode-option:hover{color:#176b3a;background:#edf6f0}.calculator-mode-option.is-active{color:#176b3a;background:#fff;box-shadow:0 1px 4px rgba(30,55,40,.08)}.home-utility-calculator{isolation:isolate}.home-utility-inner{box-sizing:border-box}.home-utility-copy{padding:4px 0}.home-utility-copy h2{text-wrap:balance}.home-utility-widget{position:relative}.home-mini-calculator{width:100%;box-sizing:border-box}.home-mini-calculator .calc-keypad{gap:8px}.home-mini-calculator .calc-key{min-height:56px}.home-mini-calculator .calc-display{font-size:2.35rem}.home-utility-doodles span{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border:1px solid #d5e1d9;border-radius:10px;background:rgba(255,255,255,.65);font-size:1.15rem}@media (max-width:900px){.home-utility-inner{grid-template-columns:minmax(0,1fr) minmax(320px,390px);gap:38px}}@media (max-width:820px){.home-utility-inner{grid-template-columns:1fr;gap:32px}.home-utility-widget{max-width:460px;justify-self:start}.home-utility-copy{order:0}}@media (max-width:560px){.home-utility-inner{width:min(100% - 28px,var(--container));padding:30px 0}.home-utility-widget{max-width:none}.home-mini-calculator{padding:15px}}.calc-keypad[hidden],.calc-mode-row[hidden]{display:none !important}.home-mini-mode-switch{display:flex;align-items:center;justify-content:flex-end;gap:3px;margin:0 0 12px;padding:3px;border:1px solid #d9e5dd;border-radius:999px;background:#f4f8f5}.home-mini-mode-switch .calculator-mode-option{border:0;background:transparent;cursor:pointer}.home-mini-mode-switch .calculator-mode-option.is-active{color:#176b3a;background:#fff;box-shadow:0 1px 4px rgba(30,55,40,.08)}.home-utility-inner{grid-template-columns:minmax(0,1fr) minmax(320px,360px);gap:60px}.home-utility-widget{max-width:360px}.home-utility-copy h2{font-size:clamp(2.7rem,5vw,3.8rem);line-height:1.08}.home-utility-copy h2 span{display:block;color:#176b3a}.home-mini-calculator{padding:14px;border-radius:20px}.home-mini-calculator .calc-display-wrap{min-height:70px;margin-bottom:9px;padding:10px 13px 9px;border-radius:13px}.home-mini-calculator .calc-display{font-size:2rem}.home-mini-calculator .calc-expression{min-height:18px;font-size:.78rem}.home-mini-calculator .home-mini-mode-switch .calculator-mode-option{min-height:30px;padding:0 11px;font-size:.78rem}.home-mini-calculator .calc-mode-row{margin:-1px 0 8px}.home-mini-calculator .calc-small-toggle{padding:4px 10px;font-size:.74rem}.home-mini-calculator .calc-keypad{gap:5px}.home-mini-calculator .calc-key{min-height:42px;border-radius:11px;font-size:.94rem}.home-mini-calculator .calc-key-function{font-size:.86rem}.home-mini-calculator .calc-history{margin-top:10px;padding-top:7px}@media (max-width:900px){.home-utility-inner{grid-template-columns:minmax(0,1fr) minmax(300px,350px);gap:34px}.home-utility-widget{max-width:350px}}@media (max-width:820px){.home-utility-inner{grid-template-columns:1fr;gap:30px}.home-utility-widget{max-width:360px;justify-self:start}}@media (max-width:560px){.home-utility-copy h2{font-size:2.45rem}.home-utility-inner{padding:30px 0}.home-utility-widget{max-width:340px}.home-mini-calculator{padding:12px}.home-mini-calculator .calc-key{min-height:40px}}.home-mini-calculator{padding:16px;border:1px solid #d4e2d9;border-radius:22px;background:rgba(255,255,255,.97);box-shadow:0 20px 48px rgba(35,62,45,.12),0 2px 8px rgba(35,62,45,.04)}.home-mini-calculator .home-mini-mode-switch{width:100%;box-sizing:border-box;justify-content:stretch;margin:0 0 11px;padding:3px;background:#eef5f1;border-color:#d5e3da}.home-mini-calculator .home-mini-mode-switch .calculator-mode-option{flex:1 1 0;min-height:31px;padding:0 10px;color:#4f5f56;font-size:.79rem}.home-mini-calculator .home-mini-mode-switch .calculator-mode-option.is-active{color:#176b3a;background:#fff;box-shadow:0 2px 7px rgba(25,60,40,.09)}.home-mini-calculator .calc-display-wrap{min-height:78px;margin-bottom:8px;padding:9px 13px 8px;border-radius:14px;background:#f7faf8;border-color:#d7e4dc;box-shadow:inset 0 1px 2px rgba(30,55,40,.025)}.home-mini-calculator .calc-display{font-size:2.05rem;font-weight:600;letter-spacing:-.015em}.home-mini-calculator .calc-expression{min-height:17px;font-size:.76rem}.home-mini-calculator .calc-small-toggle{min-width:48px;padding:4px 9px;font-size:.73rem}.home-mini-calculator .calc-keypad{gap:6px;padding:2px 0}.home-mini-calculator .calc-key{min-height:43px;border-radius:12px;font-size:.94rem;box-shadow:0 2px 5px rgba(20,40,25,.035)}.home-mini-calculator .calc-key-function{font-size:.82rem}.home-mini-calculator .calc-key-operator{background:#edf7f1}.home-mini-calculator .calc-key-equals{box-shadow:0 4px 10px rgba(23,107,58,.14)}.home-mini-calculator .calc-history{margin-top:9px;padding-top:7px}.home-mini-calculator .calc-error{min-height:0;margin-top:5px;font-size:.78rem}@media (max-width:900px){.home-utility-inner{grid-template-columns:minmax(0,1fr) minmax(290px,340px);gap:32px}.home-utility-widget{max-width:340px}}@media (max-width:820px){.home-utility-inner{grid-template-columns:1fr;gap:30px}.home-utility-widget{max-width:360px}}@media (max-width:560px){.home-mini-calculator{padding:13px;border-radius:18px}.home-mini-calculator .calc-key{min-height:41px}}.calc-information .calc-editorial-intro,.calc-information .calc-editorial-section{max-width:760px;margin:0 0 34px;padding:0;background:transparent;border:0;border-radius:0;box-shadow:none}.calc-information .calc-editorial-intro h2,.calc-information .calc-editorial-section h2{margin-top:0}.calc-information .calc-editorial-intro p,.calc-information .calc-editorial-section p{margin:0 0 14px;padding:0;background:transparent;border:0;border-radius:0;box-shadow:none}.calc-information .calc-editorial-intro p:last-child,.calc-information .calc-editorial-section p:last-child{margin-bottom:0}.calc-information .calc-data-table{width:100%;margin:22px 0 0;border-collapse:collapse;font-size:15px}.calc-information .calc-data-table th,.calc-information .calc-data-table td{padding:11px 12px;border-bottom:1px solid #e1e7e7;text-align:left;vertical-align:top}.calc-information .calc-data-table th{font-weight:700;background:#f7faf9}.calc-information .calc-data-table tr:last-child td{border-bottom:0}.calc-information .calc-source-note{margin:8px 0 0}@media (max-width:700px){.calc-information .calc-data-table{font-size:14px}.calc-information .calc-data-table th,.calc-information .calc-data-table td{padding:9px 8px}}@media (max-width:700px){.calc-information .calc-data-table{font-size:14px}.calc-information .calc-data-table th,.calc-information .calc-data-table td{padding:9px 8px}}.calc-information .calc-lead+.calc-editorial-intro{padding-top:18px}@media (max-width:700px){.calc-information .calc-lead+.calc-editorial-intro{padding-top:14px}}.calc-information .calc-editorial-intro+.calc-editorial-section{margin-top:4px}.calc-information .calc-editorial-section+.calc-editorial-section{margin-top:2px}.calc-information .calc-editorial-intro+.calc-editorial-section{margin-top:22px}.calc-information .calc-editorial-section+.calc-editorial-section{margin-top:22px}.calc-information .calc-editorial-section .calc-data-table{margin-top:20px}.formula-box{margin:20px 0;padding:14px 16px;border:1px solid #dfe7e2;border-radius:10px;background:#f8faf9;line-height:1.8;color:#3f4744}.calc-information>h2{margin-top:34px;margin-bottom:12px}.calc-information>h2:first-of-type{margin-top:30px}.calc-information>p{margin:0 0 14px;line-height:1.85}.source-note span{display:block;margin-top:7px}.source-note a{color:#176b4d}@media (max-width:560px){.unit-table{font-size:.94rem}.unit-table th,.unit-table td{padding:10px 8px}}@media (min-width:1001px){.calc-layout{grid-template-columns:minmax(0,1fr) minmax(350px,380px);gap:46px}.calculator-panel{padding:22px 24px 18px;border-radius:17px}.calculator-panel-heading{margin-bottom:16px}.calculator-panel-heading p{line-height:1.45}.calc-field{margin-bottom:12px}.calc-field label{margin-bottom:5px}.calc-input,.calc-select{height:40px;min-height:40px;max-height:40px;padding:6px 11px}.calc-unit-static{height:40px;min-height:40px;max-height:40px;padding:6px 11px;border-radius:10px;font-size:.95rem}.calc-note{margin-top:5px;line-height:1.45}.calc-actions{margin-top:4px}.calc-button{min-height:41px;padding:6px 15px}.calc-result{margin-top:12.1px;padding:15px}.calc-result-list{gap:6px;margin-top:11px}.calc-result-item{padding:7px 8px}}@media (min-width:1001px){.calc-page{padding-top:28px}.calc-breadcrumb{margin-bottom:20px}}.privacy-updated{margin:-4px 0 18px;color:#6b756e;font-size:.92rem;line-height:1.6}.privacy-optout{max-width:780px;margin:18px 0 0;padding:17px 18px;background:var(--color-primary-soft);border:1px solid #cfe7d6;border-radius:12px}.privacy-optout strong{display:block;margin-bottom:5px;color:var(--color-text);font-size:1rem}.privacy-optout p{margin:0;font-size:.98rem;line-height:1.75}.privacy-optout a{color:var(--color-primary);font-weight:600;text-underline-offset:3px}@media (max-width:560px){.privacy-optout{padding:15px}.privacy-updated{margin-bottom:15px}}.related{margin-top:38px}@media (max-width:560px){.related{margin-top:32px}}.faq details{padding:11px 0}.faq summary{line-height:1.5}.calc-page{padding-bottom:50px}@media (max-width:560px){.calc-page{padding-bottom:40px}}.mobile-header-actions{display:none}@media (max-width:700px){.site-header{position:sticky}.header-inner{width:min(100% - 24px,var(--container));min-height:56px;gap:8px;position:relative}.site-header .brand-logo-image{height:30px;max-width:130px}.mobile-header-actions{display:flex;align-items:center;gap:5px;margin-left:auto;position:relative}.mobile-search-toggle,.mobile-category-toggle{height:36px;border:1px solid var(--color-border);border-radius:9px;background:#fff;color:var(--color-text);font:inherit;font-size:.9rem;font-weight:600;line-height:1}.mobile-search-toggle{width:36px;padding:0;display:inline-flex;align-items:center;justify-content:center}.mobile-search-toggle svg{width:19px;height:19px;fill:none;stroke:currentColor;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round}.mobile-search-toggle:hover,.mobile-search-toggle:focus-visible,.mobile-category-toggle:hover,.mobile-category-toggle:focus-visible,.mobile-category-toggle[aria-expanded="true"]{border-color:#b8d3c0;background:var(--color-primary-soft);color:var(--color-primary);outline:none}.mobile-category-toggle{padding:0 10px;display:inline-flex;align-items:center;justify-content:center;gap:6px}.mobile-category-menu-icon{width:16px;height:16px;flex:0 0 16px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round}.header-search{display:none;flex-direction:row;position:absolute;top:calc(100% + 7px);right:0;width:min(300px,calc(100vw - 24px));max-width:none;margin:0;padding:8px;gap:6px;background:#fff;border:1px solid var(--color-border);border-radius:12px;box-shadow:0 10px 28px rgba(20,40,25,.12);z-index:130}.header-search.is-mobile-open{display:flex}.header-search .search-input-wrap{flex:1 1 auto}.header-search input[type="search"]{height:36px;font-size:.88rem;padding:6px 9px}.header-search button{width:auto;height:36px;padding:6px 11px;font-size:.84rem}.header-search .calculator-search-results{top:calc(100% + 7px);right:0;left:auto;width:100%;max-height:min(55vh,360px);overflow-y:auto}.mobile-category-menu{position:relative}.mobile-category-dropdown{position:absolute;top:calc(100% + 7px);right:0;width:min(210px,calc(100vw - 24px));max-height:min(70vh,430px);overflow-y:auto;padding:6px;border:1px solid var(--color-border);border-radius:12px;background:#fff;box-shadow:0 10px 28px rgba(20,40,25,.12);z-index:130}.mobile-category-dropdown a{display:block;padding:8px 10px;border-radius:8px;color:var(--color-text-soft);font-size:.9rem;font-weight:600;white-space:nowrap}.mobile-category-dropdown a:hover,.mobile-category-dropdown a:focus-visible{background:var(--color-primary-soft);color:var(--color-primary);outline:none}.main-nav{display:none}}@media (max-width:360px){.header-inner{width:min(100% - 16px,var(--container));gap:6px}.site-header .brand-logo-image{height:28px;max-width:116px}.mobile-category-toggle{padding-left:8px;padding-right:8px}}.category-page .calc-breadcrumb{margin-bottom:14px}.category-page .category-intro{padding-top:14px}/* v1.8.354 CLS: reserve footer logo dimensions before deferred CSS. */.footer-logo-image{width:91.2px;height:34.2px}@media(max-width:700px){.footer-logo-image{width:85.33px;height:32px}}
