:root{color-scheme:light;--ink:#172c2b;--muted:#516361;--paper:#f7f6f0;--line:#ccd7ce;--green:#155f50;--lime:#d7f17c;--white:#fff;--orange:#af4020;font-family:Arial,Helvetica,sans-serif;font-synthesis:none}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);line-height:1.55}a{color:var(--green);text-underline-offset:4px}a:hover{text-decoration-thickness:2px}button,input,select,textarea{font:inherit}button,a,input,select,textarea{touch-action:manipulation}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid #a34610;outline-offset:4px}.skip{position:absolute;left:1rem;top:-8rem;z-index:5;background:white;padding:.8rem}.skip:focus{top:1rem}.shell{width:min(1240px,calc(100% - 64px));margin:auto}header{border-bottom:1px solid 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1fr;gap:64px;align-items:center}.eyebrow{font-size:12px;letter-spacing:1.8px;text-transform:uppercase;font-weight:700;display:flex;gap:10px;align-items:center}.eyebrow:before{content:'';display:inline-block;width:8px;height:8px;border-radius:50%;background:var(--green)}h1{font-size:clamp(42px,5.1vw,68px);line-height:1.03;letter-spacing:-3px;margin:20px 0 24px;font-weight:600}h1 em{font-style:normal;color:var(--green)}.hero p{font-size:18px;max-width:580px;color:var(--muted)}.badges{display:flex;gap:10px;flex-wrap:wrap;margin-top:26px}.badges span{font-size:12px;border:1px solid var(--line);padding:6px 12px;border-radius:20px}.hero-art{border-radius:8px;background:var(--green);padding:24px;color:white;position:relative;overflow:hidden}.hero-art svg{width:100%;height:auto;display:block}.hero-art p{color:#e0ede5;font-size:12px;margin:0;letter-spacing:.5px}.anchor-nav{display:flex;gap:12px;flex-wrap:wrap;padding:0 0 42px}.anchor-nav a{background:white;border:1px solid var(--line);padding:12px 20px;border-radius:40px;color:var(--ink);text-decoration:none;font-weight:700;font-size:14px}.anchor-nav a:hover{background:var(--lime)}.tool{border-top:1px solid var(--ink);padding:32px 0 70px;scroll-margin-top:20px}.section-head{display:flex;gap:20px;justify-content:space-between;align-items:start;margin-bottom:26px}.section-title{display:flex;gap:20px;align-items:start}.number{background:var(--lime);font:14px monospace;border-radius:50%;width:42px;height:42px;display:grid;place-items:center;flex-shrink:0}h2{font-size:30px;line-height:1.15;letter-spacing:-1px;margin:4px 0 8px}h3{font-size:19px;line-height:1.3;margin:0 0 12px}.section-head p{margin:0;color:var(--muted);max-width:630px;font-size:15px}.method-link{font-size:13px;white-space:nowrap;padding-top:10px}.planner-grid{display:grid;grid-template-columns:350px 1fr;gap:24px;align-items:start}.panel{background:white;border:1px solid var(--line);border-radius:8px;padding:26px}.controls .group+.group{border-top:1px solid var(--line);padding-top:22px;margin-top:24px}.group-title{font:700 12px Arial;letter-spacing:1px;text-transform:uppercase;margin:0 0 15px;color:var(--muted)}.fields{display:grid;grid-template-columns:1fr 1fr;gap:12px}.field{margin-bottom:14px;min-width:0}label{display:block;font-size:13px;font-weight:700;margin-bottom:6px}input,select,textarea{width:100%;min-height:44px;border:1px solid #9aaca4;border-radius:4px;background:#fff;padding:10px 11px;color:var(--ink)}input:invalid{box-shadow:none}input[aria-invalid=true]{border-color:#b32b20}textarea{min-height:88px;resize:vertical}.hint{font-size:12px;color:var(--muted);margin:4px 0 0}.error{color:#a42918;font-size:14px;font-weight:700;margin:12px 0}.error:empty{display:none}.result-panel{padding:0;overflow:hidden}.result-top{background:#edf1e8;padding:22px 26px;display:flex;gap:22px;flex-wrap:wrap}.metric{min-width:120px}.metric span{display:block;font-size:11px;text-transform:uppercase;letter-spacing:1px;color:var(--muted)}.metric strong{font-size:28px;font-weight:500;letter-spacing:-1px;display:block}.metric small{font-size:12px;color:var(--muted)}.result-visual{padding:20px 26px 0;min-height:280px;display:grid;place-items:center;background:#fff}.result-visual svg{width:100%;max-height:320px;display:block}.legend{display:flex;gap:20px;justify-content:center;font-size:12px;color:var(--muted);padding:10px 20px;flex-wrap:wrap}.legend span:before{content:'';display:inline-block;width:10px;height:10px;background:var(--lime);margin-right:7px;border:1px solid #809556}.legend span:last-child:before{background:#264d45;border-color:#264d45}.result-detail{padding:18px 26px 24px;border-top:1px solid var(--line);font-size:14px}.result-detail p{margin:0 0 9px}.result-detail p:last-child{margin:0}.notice{padding:15px 18px;background:#edf1e8;border-left:3px solid var(--green);font-size:13px;margin:20px 0 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p{font-size:19px;color:var(--muted)}.article{display:grid;grid-template-columns:240px minmax(0,760px);gap:60px;margin-bottom:70px}.toc{padding-top:22px;align-self:start;position:sticky;top:20px}.toc a{display:block;margin-bottom:12px;font-size:14px}.prose section{padding-top:28px;scroll-margin-top:16px}.prose h2{font-size:28px;margin-bottom:18px}.prose p,.prose li{color:#374e49}.prose li{margin-bottom:10px}.equation{background:#eaf0e2;border:1px solid var(--line);border-radius:5px;padding:22px;font-family:monospace;font-size:14px;overflow-wrap:anywhere;line-height:1.9}.prose table{border-collapse:collapse;width:100%;font-size:14px;margin:22px 0}.prose th,.prose td{padding:12px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}.prose 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@media(min-width:1400px){.hero{padding-top:82px;padding-bottom:60px}}@media(max-width:1000px){.shell{width:calc(100% - 40px)}.hero{gap:35px}.planner-grid{grid-template-columns:300px 1fr}.loop-grid{grid-template-columns:1fr 1fr}.panel{padding:20px}.shot{grid-template-columns:minmax(0,1fr) 82px 36px;gap:7px;padding:10px}.icon-btn{width:36px}.article{grid-template-columns:190px 1fr;gap:35px}.nav{gap:15px}.nav .hub{padding:8px 11px}}@media(max-width:760px){.shell{width:calc(100% - 32px)}.header-inner{padding:18px 0;flex-direction:column;align-items:start;gap:14px}.nav{width:100%;justify-content:space-between;gap:8px}.nav a{font-size:13px}.brand strong{font-size:20px}.hero{grid-template-columns:1fr;padding:38px 0 26px;gap:26px}.hero h1{letter-spacing:-2px;max-width:580px;margin:16px 0}.hero p{font-size:16px}.hero-art{padding:16px;max-width:600px}.hero-art svg{max-height:260px}.badges{margin-top:20px}.anchor-nav{padding-bottom:30px;gap:8px}.anchor-nav a{font-size:13px;padding:10px 14px}.section-head{display:block}.section-title{gap:14px}.method-link{display:inline-block;margin-left:56px}.tool{padding:26px 0 40px}h2{font-size:26px}.planner-grid,.loop-grid{grid-template-columns:1fr;gap:16px}.controls .group+.group{margin-top:18px;padding-top:18px}.result-visual{min-height:240px;padding:12px 12px 0}.result-top{padding:20px;gap:18px}.metric strong{font-size:26px}.result-detail{padding:16px 20px}.loop-intro{gap:12px}.shot{grid-template-columns:minmax(0,1fr) 86px 38px}.icon-btn{width:38px}.budget strong.big{font-size:56px}.guide-strip{grid-template-columns:1fr;gap:20px;padding:30px 0 40px}.footer-inner{display:block}.footer-links{margin-top:18px}.prose-header{padding:35px 0 15px}.article{grid-template-columns:1fr;gap:0}.toc{position:static;border-bottom:1px solid var(--line);padding-bottom:16px}.prose table{min-width:420px}.panel{padding:18px}.result-panel{padding:0}.notice{font-size:12px}.section-head p{font-size:14px}}@media(prefers-reduced-motion:no-preference){html{scroll-behavior:smooth}}
.prose{min-width:0}