:root{--ink:#082331;--ink-2:#123947;--paper:#f6f4ed;--white:#fff;--lime:#c7f36b;--lime-dark:#8bb832;--aqua:#44c7bc;--line:rgba(8,35,49,.16);--muted:#5b6e75;--mono:'DM Mono',monospace;--sans:'Manrope',sans-serif}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);font-size:16px;line-height:1.55}button,input,select{font:inherit}button,a{touch-action:manipulation}a{color:inherit}.site-header{height:78px;padding:0 clamp(24px,5vw,76px);display:flex;align-items:center;gap:40px;border-bottom:1px solid var(--line);position:relative;z-index:5}.brand{display:flex;align-items:center;gap:10px;font-size:1.3rem;font-weight:800;text-decoration:none;letter-spacing:-.05em}.brand>span>span{color:var(--lime-dark)}.brand-mark{width:35px;height:35px;fill:none;stroke:currentColor;stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round}.brand-mark circle{fill:var(--lime);stroke:var(--ink)}nav{display:flex;gap:28px;margin-left:auto}nav a{font-size:.87rem;font-weight:600;text-decoration:none}nav a:hover{text-decoration:underline;text-underline-offset:5px}.header-cta{background:var(--ink);color:white;padding:11px 17px;text-decoration:none;font-size:.86rem;font-weight:700}.header-cta span{color:var(--lime)}.menu-button{display:none;background:none;border:0;font-weight:700}.hero{min-height:690px;display:grid;grid-template-columns:minmax(0,1fr) minmax(430px,580px);gap:clamp(45px,8vw,130px);align-items:center;padding:78px clamp(24px,7vw,110px);position:relative;overflow:hidden}.hero:after{content:"";position:absolute;width:550px;height:550px;border:1px solid var(--line);border-radius:50%;left:-320px;bottom:-360px;box-shadow:0 0 0 80px rgba(8,35,49,.02),0 0 0 160px rgba(8,35,49,.018);pointer-events:none}.eyebrow,.step-label{text-transform:uppercase;font:500 .72rem/1 var(--mono);letter-spacing:.12em}.eyebrow{display:flex;align-items:center;gap:9px;margin-bottom:25px}.eyebrow span{width:8px;height:8px;background:var(--lime-dark);border-radius:50%}.hero h1{font-size:clamp(3rem,5.5vw,5.9rem);line-height:.98;letter-spacing:-.065em;margin:0 0 30px;max-width:800px}.hero h1 em{font-family:Georgia,serif;font-weight:400;color:var(--aqua)}.hero-copy>p{font-size:1.2rem;max-width:590px;color:var(--muted)}.trust-line{font-size:.82rem;border-top:1px solid var(--line);margin-top:46px;padding-top:18px;max-width:440px}.calculator{background:var(--white);padding:32px;box-shadow:14px 14px 0 var(--ink);border:1px solid var(--ink)}.calculator-head,.chart-head{display:flex;justify-content:space-between;align-items:flex-start}.calculator h2{font-size:1.75rem;margin:9px 0 26px;letter-spacing:-.04em}.text-button{border:0;background:none;text-decoration:underline;text-underline-offset:4px;color:var(--muted);cursor:pointer}.field-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px 14px}.field{display:flex;flex-direction:column;gap:7px;min-width:0}.field.wide{grid-column:1/-1}.field>span{font-size:.78rem;font-weight:700}.field small{font-size:.7rem;color:var(--muted)}input,select{width:100%;height:48px;border:1px solid var(--line);background:#fbfbf8;padding:0 13px;color:var(--ink);border-radius:0;outline:none}input:focus,select:focus{border-color:var(--aqua);box-shadow:0 0 0 2px rgba(68,199,188,.2)}.input-suffix{position:relative}.input-suffix span{position:absolute;right:13px;top:12px;color:var(--muted)}.input-suffix input{padding-right:36px}.segmented{display:grid;grid-template-columns:repeat(3,1fr);border:1px solid var(--line);padding:3px;background:#f3f3ee}.segment{height:40px;border:0;background:transparent;font-size:.78rem;font-weight:700;color:var(--muted);cursor:pointer}.segment.active{background:var(--ink);color:white}.info{width:18px;height:18px;border:1px solid var(--line);border-radius:50%;background:white;font:500 .68rem var(--mono);cursor:help}.calculate-button{width:100%;height:56px;border:0;background:var(--lime);color:var(--ink);font-weight:800;margin-top:24px;cursor:pointer;display:flex;align-items:center;justify-content:space-between;padding:0 20px}.calculate-button:hover{background:#d6fa8e}.calculate-button span{font-size:1.3rem}.error-message{color:#a02925;font-size:.8rem;min-height:0;margin-top:10px}.hidden{display:none}.result-section{background:var(--ink);color:white;display:grid;grid-template-columns:minmax(310px,.72fr) minmax(0,1.28fr);gap:clamp(50px,8vw,130px);padding:80px clamp(24px,7vw,110px)}.result-summary{padding-right:35px}.result-number-row{display:flex;align-items:baseline;gap:14px;margin:22px 0 16px}.result-number-row strong{font-size:clamp(4rem,8vw,7.3rem);line-height:1;letter-spacing:-.08em;color:var(--lime)}.result-number-row span{font:400 .9rem var(--mono);color:#b7c3c8}.result-summary>p{font-size:1.08rem;color:#d8e0e2}.status-pill{display:inline-flex;align-items:center;gap:8px;border:1px solid rgba(255,255,255,.2);padding:8px 12px;margin-top:17px;font:400 .72rem var(--mono)}.status-pill span{width:8px;height:8px;border-radius:50%;background:var(--lime)}.copy-button{display:block;margin-top:34px;border:0;border-bottom:1px solid #8da0a7;color:white;background:none;padding:0 0 5px;font-weight:700;cursor:pointer}.chart-panel{min-width:0}.chart-head span{display:block;font-weight:700}.chart-head small{display:block;color:#9dafb5;font-size:.73rem;margin-top:4px}.chart-head>strong{font:500 1rem var(--mono);color:var(--lime)}#powerChart{display:block;width:100%;height:auto;margin:25px 0 12px;overflow:visible}.grid-lines line{stroke:rgba(255,255,255,.12);stroke-dasharray:3 5}.curve{fill:none;stroke:var(--lime);stroke-width:4;stroke-linecap:round}.area{fill:url(#none);stroke:none;opacity:.08}.target-line{stroke:white;stroke-width:1;stroke-dasharray:4 5}.point{fill:var(--ink);stroke:var(--lime);stroke-width:4}.chart-labels text{fill:#8da0a7;font:11px var(--mono)}.chart-labels .target-label{fill:white}.chart-note{border-top:1px solid rgba(255,255,255,.16);display:flex;gap:13px;padding-top:17px}.chart-note>span{width:7px;height:7px;flex:0 0 7px;background:var(--aqua);margin-top:8px}.chart-note p{margin:0;color:#aebdc2;font-size:.78rem}.chart-note strong{color:white}.guide{padding:110px clamp(24px,7vw,110px);display:grid;grid-template-columns:.8fr 1.2fr;gap:9vw}.section-intro h2,.method h2,.expert-cta h2{font-size:clamp(2.5rem,4.4vw,4.7rem);line-height:1.03;letter-spacing:-.06em;margin:22px 0}.section-intro p{max-width:460px;color:var(--muted);font-size:1.08rem}.concepts{border-top:1px solid var(--ink)}.concepts article{display:grid;grid-template-columns:45px 160px 1fr;gap:20px;align-items:start;border-bottom:1px solid var(--line);padding:28px 0}.concepts article>span{font:500 .68rem var(--mono);color:var(--aqua)}.concepts h3{margin:0;font-size:1rem}.concepts p{margin:0;color:var(--muted);font-size:.9rem}.method{margin:0 clamp(24px,7vw,110px);padding:80px 0;border-top:1px solid var(--ink);display:grid;grid-template-columns:1fr 1fr;gap:9vw}.method h2{max-width:560px}.method-copy>p{font-size:1.08rem;color:var(--muted);max-width:590px}.method ul{list-style:none;padding:18px 0 0;margin:0}.method li{border-top:1px solid var(--line);padding:14px 0;font-weight:600}.method li span{color:var(--lime-dark);margin-right:10px}.expert-cta{background:var(--aqua);padding:80px clamp(24px,7vw,110px);display:grid;grid-template-columns:1.15fr .85fr;gap:10vw;align-items:end}.expert-cta h2{margin-bottom:0}.expert-cta p{max-width:540px}.expert-cta a{display:inline-flex;margin-top:20px;background:var(--ink);color:white;text-decoration:none;padding:15px 20px;font-weight:700;gap:24px}.expert-cta a span{color:var(--lime)}footer{padding:40px clamp(24px,5vw,76px);display:flex;align-items:center;gap:28px;background:white;font-size:.78rem;color:var(--muted)}footer p:last-child{margin-left:auto}.footer-brand{color:var(--ink)}.tooltip{position:fixed;z-index:20;max-width:260px;background:var(--ink);color:white;padding:10px 12px;font-size:.75rem;display:none;box-shadow:4px 4px 0 var(--lime)}
@media(max-width:900px){nav,.header-cta{display:none}.menu-button{display:block;margin-left:auto}.site-header.open nav{display:flex;position:absolute;top:78px;left:0;right:0;background:var(--paper);padding:25px;flex-direction:column;border-bottom:1px solid var(--line)}.hero{grid-template-columns:1fr;padding-top:60px}.calculator{max-width:650px}.result-section,.guide,.method,.expert-cta{grid-template-columns:1fr}.concepts article{grid-template-columns:40px 145px 1fr}.expert-cta{gap:30px}footer{flex-wrap:wrap}footer p:last-child{margin-left:0;width:100%}}
@media(max-width:560px){.site-header{height:68px}.site-header.open nav{top:68px}.hero{padding:44px 18px 64px}.hero h1{font-size:3.15rem}.calculator{padding:22px;box-shadow:8px 8px 0 var(--ink)}.field-grid{grid-template-columns:1fr}.field.wide{grid-column:auto}.result-section,.guide,.expert-cta{padding:65px 22px}.method{margin:0 22px}.result-summary{padding-right:0}.concepts article{grid-template-columns:35px 1fr}.concepts article p{grid-column:2}.chart-head small{max-width:220px}.expert-cta h2{font-size:2.8rem}footer{padding:34px 22px;display:block}footer p{margin-top:18px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

/* Editorial pages */
.page-main{min-height:calc(100vh - 220px)}.page-hero{padding:90px clamp(24px,7vw,110px) 75px;border-bottom:1px solid var(--line);display:grid;grid-template-columns:minmax(0,1.1fr) minmax(280px,.55fr);gap:8vw;align-items:end}.page-hero h1{font-size:clamp(3.4rem,7vw,7.4rem);line-height:.92;letter-spacing:-.075em;margin:20px 0 0}.page-hero h1 em{font-family:Georgia,serif;font-weight:400;color:var(--aqua)}.page-hero p{font-size:1.12rem;color:var(--muted);max-width:520px;margin:0}.page-content{padding:80px clamp(24px,7vw,110px) 110px;display:grid;grid-template-columns:minmax(220px,.5fr) minmax(0,1.15fr);gap:10vw}.page-aside{font:500 .72rem var(--mono);letter-spacing:.08em;text-transform:uppercase}.page-aside a{display:block;margin:15px 0;text-transform:none;letter-spacing:0;font-family:var(--sans);font-size:.85rem}.prose{max-width:800px}.prose h2{font-size:clamp(2rem,3.6vw,3.4rem);line-height:1.05;letter-spacing:-.055em;margin:0 0 24px}.prose h2:not(:first-child){margin-top:75px;padding-top:65px;border-top:1px solid var(--line)}.prose h3{font-size:1.1rem;margin:35px 0 10px}.prose p{color:var(--muted);font-size:1.02rem}.prose strong{color:var(--ink)}
.prose ul{color:var(--muted);font-size:1.02rem;padding-left:1.25em;margin:0 0 1em}
.prose li{margin:8px 0}
.prose li::marker{color:var(--lime-dark)}.principles{display:grid;grid-template-columns:1fr 1fr;border-top:1px solid var(--ink);margin-top:35px}.principles article{padding:25px 25px 28px 0;border-bottom:1px solid var(--line)}.principles article:nth-child(odd){border-right:1px solid var(--line)}.principles article:nth-child(even){padding-left:25px}.principles span{font:500 .7rem var(--mono);color:var(--aqua)}.principles h3{margin:12px 0 7px}.principles p{font-size:.87rem;margin:0}.page-callout{background:var(--ink);color:white;padding:34px;margin-top:50px;display:grid;grid-template-columns:1fr auto;gap:25px;align-items:center}.page-callout p{color:#b8c6ca;margin:0}.page-callout a{background:var(--lime);color:var(--ink);padding:13px 17px;text-decoration:none;font-weight:800;white-space:nowrap}.sitemap-list{border-top:1px solid var(--ink)}.sitemap-group{display:grid;grid-template-columns:190px 1fr;gap:35px;padding:30px 0;border-bottom:1px solid var(--line)}.sitemap-group h2{font-size:1.1rem;margin:0}.sitemap-links a{display:block;font-size:1.15rem;font-weight:700;text-decoration:none;margin-bottom:6px}.sitemap-links a:hover{text-decoration:underline;text-underline-offset:5px}.sitemap-links p{margin:0 0 22px;font-size:.88rem}.sitemap-links p:last-child{margin-bottom:0}.back-home{font-weight:700;text-decoration:none}.back-home:hover{text-decoration:underline;text-underline-offset:5px}
@media(max-width:900px){.page-hero,.page-content{grid-template-columns:1fr}.page-hero{gap:35px}.page-content{gap:45px}.page-aside{display:flex;gap:22px;flex-wrap:wrap}.page-aside strong{width:100%}.page-aside a{margin:0}.page-callout{grid-template-columns:1fr}.page-callout a{justify-self:start}}
@media(max-width:560px){.page-hero{padding:58px 22px 55px}.page-content{padding:55px 22px 75px}.principles{grid-template-columns:1fr}.principles article:nth-child(odd){border-right:0}.principles article:nth-child(even){padding-left:0}.sitemap-group{grid-template-columns:1fr;gap:15px}}