:root{--ink:#18332d;--muted:#5b6a64;--forest:#173e32;--lime:#dcf298;--paper:#f7f8f4;--line:#dce3da;--white:#fff;--radius:18px;--font:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:30px}body{margin:0;background:var(--paper);color:var(--ink);font:17px/1.65 var(--font);-webkit-font-smoothing:antialiased}a{color:inherit;text-underline-offset:4px}a:hover{color:#386b46}button,input,select{font:inherit}button,a,input,select,summary{touch-action:manipulation}button{cursor:pointer}button:disabled{cursor:default}img{display:block;max-width:100%}:focus-visible{outline:3px solid #7b9b35;outline-offset:5px}h1,h2,h3,p{margin:0}h1,h2,h3{line-height:1.1;letter-spacing:-.045em;font-weight:650}h1{font-size:clamp(2.65rem,6vw,5rem)}h2{font-size:clamp(2rem,3.5vw,3rem)}h3{font-size:1.4rem;letter-spacing:-.025em}p+p{margin-top:1.1rem}.wrap{width:min(1240px,calc(100% - 64px));margin:auto}.skip{position:absolute;top:-80px;left:16px;background:var(--lime);padding:8px;z-index:10}.skip:focus{top:10px}.site-header{border-bottom:1px solid var(--line);background:var(--paper)}.header-inner{display:flex;align-items:center;justify-content:space-between;gap:25px;min-height:96px}.brand{display:inline-flex;align-items:center;gap:11px;text-decoration:none;font-size:23px;font-weight:760;letter-spacing:-1px;white-space:nowrap}.brand-mark{display:grid;place-items:center;width:35px;height:35px;border:2px solid var(--forest);border-radius:50%;font-size:19px;letter-spacing:-2px;padding-right:2px}.brand span:last-child{font-weight:420;color:var(--muted)}nav{display:flex;gap:30px;align-items:center}nav a{font-size:15px;text-decoration:none;font-weight:550}.nav-cta{border:1px solid var(--ink);padding:10px 17px;border-radius:7px}.mobile-menu{display:none}.eyebrow{display:block;font-size:12px;letter-spacing:.16em;text-transform:uppercase;font-weight:740;color:#50705b;margin-bottom:19px}.hero{display:grid;grid-template-columns:1fr 1.02fr;gap:54px;padding:58px 0 55px;align-items:center}.hero h1{font-size:clamp(3rem,5.8vw,5.3rem);max-width:660px;line-height:1.03}.hero h1 em{font-style:normal;color:#577c50}.hero-copy>p{max-width:480px;font-size:18px;margin-top:25px;color:var(--muted);line-height:1.65}.hero-actions{display:flex;gap:20px;align-items:center;flex-wrap:wrap;margin-top:31px}.button{display:inline-flex;align-items:center;justify-content:center;gap:20px;background:var(--forest);color:#fff;border:1px solid var(--forest);padding:14px 21px;border-radius:7px;text-decoration:none;font-weight:600;font-size:15px;line-height:1.5}.button:hover{background:#2a5643;color:#fff}.button.light{background:var(--lime);color:var(--forest);border-color:var(--lime)}.button.outline{background:transparent;color:var(--forest);border-color:#98aa98}.text-link{font-size:15px;font-weight:630}.hero-visual{position:relative;min-width:0}.hero-visual img{width:100%;height:490px;object-fit:cover;object-position:64% 50%;border-radius:14px}.photo-label{position:absolute;bottom:22px;left:22px;right:22px;color:white;border-top:1px solid #ffffff60;padding-top:14px;display:flex;justify-content:space-between;font-size:12px;letter-spacing:.12em;text-transform:uppercase;text-shadow:0 1px 5px #000}.photo-label b{font-weight:600}.hero-note{margin-top:25px!important;font-size:13px!important;color:#667466!important;display:flex;gap:17px;flex-wrap:wrap}.section{padding:68px 0;border-top:1px solid var(--line)}.section-head{display:flex;align-items:end;justify-content:space-between;gap:28px;margin-bottom:33px}.section-head h2{max-width:630px}.section-head p{color:var(--muted);max-width:370px;font-size:16px}.section-head .eyebrow{margin-bottom:12px}.tools-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.tool-card{position:relative;padding:28px 27px;border-radius:12px;background:#fff;border:1px solid var(--line);text-decoration:none;transition:transform .15s,box-shadow .15s}.tool-card:hover{transform:translateY(-3px);color:var(--ink);box-shadow:0 12px 22px #1d372c09}.tool-card.featured{background:var(--forest);color:white;border-color:var(--forest)}.tool-card.featured:hover{color:white}.tool-icon{width:42px;height:42px;display:grid;place-items:center;background:#eff3e7;color:var(--forest);border-radius:10px;margin-bottom:36px}.tool-icon svg{width:24px;height:24px;fill:none;stroke:currentColor;stroke-width:1.6}.featured .tool-icon{background:#315643;color:var(--lime)}.tool-card p{font-size:15px;color:var(--muted);margin-top:13px;max-width:270px}.featured p{color:#d0ddd2}.card-link{display:flex;align-items:center;justify-content:space-between;font-size:14px;font-weight:650;margin-top:28px}.card-link span:last-child{font-size:21px}.tool-card .tag{position:absolute;top:29px;right:24px;font-size:11px;letter-spacing:.1em;border:1px solid #ffffff55;padding:3px 8px;border-radius:20px}.intro-band{display:grid;grid-template-columns:.8fr 1.2fr;gap:90px}.intro-band p{color:var(--muted);font-size:19px}.intro-band .text-link{display:inline-block;margin-top:21px;color:var(--ink)}.guide-list{display:grid;grid-template-columns:1fr 1fr;gap:0 44px}.guide-row{display:grid;grid-template-columns:40px 1fr 25px;gap:15px;border-top:1px solid var(--line);padding:28px 0;text-decoration:none;align-items:start}.guide-row .number{font-size:13px;color:#7a8879;letter-spacing:.08em;padding-top:3px}.guide-row h3{font-size:1.35rem;line-height:1.3}.guide-row p{font-size:15px;color:var(--muted);margin-top:8px}.guide-row .arrow{font-size:24px}.field-note{background:var(--forest);color:white;padding:45px;border-radius:14px;display:flex;align-items:center;justify-content:space-between;gap:35px;margin:0 0 70px}.field-note h2{font-size:2.1rem;max-width:670px}.field-note p{font-size:16px;color:#d1ddd3;margin-top:15px}.site-footer{padding:42px 0 24px;border-top:1px solid var(--line);font-size:14px;color:var(--muted)}.footer-top{display:flex;justify-content:space-between;gap:30px}.footer-top p{margin-top:10px}.footer-links{display:flex;gap:28px;align-items:start}.footer-links a{text-decoration:none}.footer-bottom{display:flex;justify-content:space-between;gap:20px;margin-top:42px;padding-top:18px;border-top:1px solid var(--line);font-size:12px}.breadcrumb{display:flex;gap:9px;flex-wrap:wrap;font-size:13px;color:var(--muted);padding-top:26px}.breadcrumb a{text-decoration:none}.page-head{padding:37px 0 34px;max-width:880px}.page-head h1{font-size:clamp(2.4rem,4.8vw,4.1rem);line-height:1.07}.page-head .dek{color:var(--muted);font-size:19px;max-width:740px;margin-top:23px}.page-head .eyebrow{margin-bottom:15px}.meta{margin-top:19px;font-size:13px;color:var(--muted)}.article-layout{display:grid;grid-template-columns:minmax(0,780px) 250px;gap:75px;align-items:start;padding-bottom:70px}.article-body{min-width:0}.article-body h2{font-size:1.8rem;margin:38px 0 17px;line-height:1.2;letter-spacing:-.035em}.article-body h3{font-size:1.25rem;line-height:1.3;margin:26px 0 12px}.article-body p{margin-bottom:16px}.article-body ul,.article-body ol{padding-left:23px;margin:15px 0 24px}.article-body li{margin-bottom:10px;padding-left:3px}.article-body a{font-weight:550}.article-body table{width:100%;border-collapse:collapse;font-size:15px;margin:22px 0}.article-body th,.article-body td{padding:13px 14px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}.article-body th{background:#eaf0e6;font-weight:650}.table-wrap{overflow-x:auto}.callout{background:#edf2e6;border-left:3px solid #658340;border-radius:0 8px 8px 0;padding:23px 26px;margin:25px 0}.callout p:last-child{margin-bottom:0}.callout strong{display:block;margin-bottom:7px}.sidebar{border-top:2px solid var(--forest);padding-top:20px;position:sticky;top:25px;margin-top:9px}.sidebar h2{font-size:13px;text-transform:uppercase;letter-spacing:.12em;margin-bottom:12px}.sidebar a{display:block;padding:10px 0;text-decoration:none;border-bottom:1px solid var(--line);font-size:14px}.sidebar .aside-note{font-size:13px;color:var(--muted);margin-top:25px}.sources{border-top:1px solid var(--line);margin-top:40px;padding-top:20px;font-size:14px}.sources h2{font-size:1.15rem;margin-top:0}.sources ul{padding-left:20px}.sources .reviewed{color:var(--muted);font-size:13px}.faq details{border-top:1px solid var(--line);padding:17px 0}.faq summary{font-weight:620;cursor:pointer;line-height:1.4}.faq details p{margin:14px 0 0;color:var(--muted)}.calc-shell{display:grid;grid-template-columns:1.2fr .8fr;border:1px solid var(--line);border-radius:14px;overflow:hidden;background:white;margin:3px 0 44px}.calc-fields{padding:30px}.calc-fields h2{font-size:1.35rem;margin-bottom:8px}.calc-fields .helper{font-size:14px;color:var(--muted);margin-bottom:23px}.fields{display:grid;grid-template-columns:1fr 1fr;gap:20px}.field label{display:block;font-size:14px;font-weight:620;margin-bottom:7px}.field small{font-size:12px;line-height:1.5;display:block;color:var(--muted);margin-top:6px}.input-wrap{position:relative}.field input,.field select{width:100%;min-height:48px;padding:10px 12px;border:1px solid #adbbac;border-radius:6px;background:white;color:var(--ink);font-size:16px}.field input{padding-right:47px}.field .unit{position:absolute;right:12px;top:12px;font-size:13px;color:var(--muted)}.calc-result{background:var(--forest);color:white;padding:31px;display:flex;flex-direction:column;justify-content:center;min-height:310px}.result-label{font-size:12px;text-transform:uppercase;letter-spacing:.15em;color:#d2e2d5}.result-value{font-size:clamp(2.7rem,5.2vw,4.7rem);font-weight:580;letter-spacing:-.07em;line-height:1.1;margin-top:15px;overflow-wrap:anywhere}.result-value.long{font-size:2.5rem;letter-spacing:-.04em}.result-unit{font-size:17px;color:var(--lime);margin-top:4px}.result-details{border-top:1px solid #ffffff35;margin-top:27px;padding-top:17px;font-size:14px;display:grid;gap:10px}.result-details div{display:flex;justify-content:space-between;gap:10px}.result-details strong{text-align:right;font-weight:550}.result-note{font-size:13px;margin-top:23px;color:#d1ddd3;line-height:1.5}.calc-toolbar{display:flex;align-items:center;gap:18px;flex-wrap:wrap;padding-top:25px}.calc-toolbar button{font-size:14px;padding:10px 15px}.quiet-button{background:none;border:0;color:var(--forest);font-size:14px;text-decoration:underline;text-underline-offset:3px;padding:10px 0}.validation{font-size:14px;color:#a12621;padding-top:10px}.calc-copy{display:grid;grid-template-columns:minmax(0,780px) 250px;gap:75px;padding-bottom:70px}.formula{padding:20px;background:#eaf0e6;border-radius:8px;font-size:15px;font-family:ui-monospace,SFMono-Regular,monospace;overflow-wrap:anywhere}.check-toolbar{display:flex;gap:20px;align-items:center;flex-wrap:wrap;padding:20px;background:#eaf0e6;border-radius:10px;margin:5px 0 25px}.check-toolbar .progress{font-size:14px;font-weight:600;margin-right:auto}.checklist-group{margin-bottom:30px}.checklist-group h2{font-size:1.45rem}.check-item{display:flex;gap:13px;align-items:start;padding:14px 0;border-bottom:1px solid var(--line);cursor:pointer}.check-item input{width:20px;height:20px;margin-top:5px;flex-shrink:0;accent-color:var(--forest)}.check-item:has(input:checked) span{color:#6a7967;text-decoration:line-through}.check-item span{font-size:16px}.resource-grid{display:grid;gap:14px;margin:24px 0}.resource{border:1px solid var(--line);background:white;border-radius:9px;padding:21px}.resource h3{margin-top:0}.resource p{font-size:15px}.resource a{font-size:14px}.notice{font-size:13px;color:var(--muted)}.noscript{background:#fff4ca;padding:15px;font-size:14px}.not-found{min-height:55vh;padding:80px 0}.not-found p{margin:25px 0}.print-only{display:none}
@media(min-width:1600px){.wrap{width:min(1360px,calc(100% - 100px))}.hero-visual img{height:540px}}
@media(max-width:1050px){nav{gap:18px}.hero{gap:30px}.hero-visual img{height:460px}.article-layout,.calc-copy{gap:40px;grid-template-columns:minmax(0,1fr) 215px}.intro-band{gap:50px}.calc-fields,.calc-result{padding:24px}}
@media(max-width:900px){.wrap{width:calc(100% - 36px)}.header-inner{min-height:78px}.brand{font-size:21px}.desktop-nav{display:none}.mobile-menu{display:block;position:relative}.mobile-menu summary{font-size:14px;font-weight:650;padding:9px 0 9px 14px;cursor:pointer}.mobile-menu nav{position:absolute;top:44px;right:0;width:230px;background:var(--paper);border:1px solid var(--line);box-shadow:0 15px 30px #18332d15;border-radius:8px;padding:20px;display:flex;align-items:stretch;gap:16px;flex-direction:column;z-index:5}.hero{grid-template-columns:1fr;padding:36px 0;gap:29px}.hero h1{font-size:clamp(2.9rem,10vw,4.2rem);max-width:550px}.hero-copy>p{margin-top:20px;font-size:17px}.hero-actions{gap:18px;margin-top:24px}.hero-visual img{height:340px;object-position:65% 55%}.hero-note{margin-top:22px!important}.section{padding:43px 0}.section-head{align-items:start;flex-direction:column;gap:17px;margin-bottom:26px}.section-head p{max-width:none}.tools-grid{grid-template-columns:1fr}.tool-card{padding:23px}.tool-icon{margin-bottom:23px}.tool-card p{max-width:none}.card-link{margin-top:24px}.intro-band{grid-template-columns:1fr;gap:23px}.intro-band p{font-size:17px}.guide-list{grid-template-columns:1fr}.guide-row{padding:23px 0}.field-note{padding:28px;align-items:start;flex-direction:column;margin-bottom:43px;gap:23px}.field-note h2{font-size:1.8rem}.footer-top{flex-direction:column;gap:26px}.footer-links{gap:20px;flex-wrap:wrap}.footer-bottom{flex-direction:column;gap:7px;margin-top:28px}.article-layout,.calc-copy{grid-template-columns:1fr;gap:30px;padding-bottom:43px}.sidebar{position:static;margin-top:0}.page-head{padding:29px 0}.page-head .dek{font-size:17px}.page-head h1{font-size:2.7rem}.calc-shell{grid-template-columns:1fr}.calc-fields{padding:23px 19px}.calc-result{min-height:260px;padding:28px 23px}.result-value{font-size:4rem}.fields{gap:18px 14px}.field label{font-size:13px}.article-body h2{font-size:1.6rem}.article-body table{font-size:14px}.article-body th,.article-body td{padding:10px}.callout{padding:19px}.check-toolbar{gap:15px}.breadcrumb{font-size:12px}.photo-label{font-size:11px;left:17px;right:17px;bottom:17px}.eyebrow{font-size:11px}}
@media(max-width:370px){.fields{grid-template-columns:1fr}.hero h1{font-size:2.8rem}.hero-actions{align-items:start;flex-direction:column}.brand{font-size:19px}.wrap{width:calc(100% - 28px)}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}
@media print{body{background:white;color:black;font-size:11pt}.site-header,.site-footer,.sidebar,.check-toolbar button,.mobile-menu,.skip,.calc-toolbar,.hero-visual,.no-print{display:none!important}.wrap{width:100%}.article-layout,.calc-copy{display:block}.page-head h1{font-size:25pt}.page-head{padding:15px 0}.article-body h2{font-size:16pt}.check-item{padding:7px 0;break-inside:avoid}.checklist-group{break-inside:avoid}.calc-result{background:#eee;color:black}.result-note,.result-label,.result-unit{color:black}.print-only{display:block}.breadcrumb{display:none}a{color:black;text-decoration:none}.sources{font-size:9pt}.calc-shell{break-inside:avoid}.field-note{display:none}}