:root{--bg:#f6f7f3;--paper:#fff;--ink:#152019;--muted:#58645c;--frog:#21613d;--frog2:#dfece3;--line:#ccd5ce;--dark:#102018;--code:#eef2ee;--max:1180px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font:17px/1.62 Georgia,'Times New Roman',serif}a{color:var(--frog);text-decoration-thickness:1px;text-underline-offset:3px}header{background:var(--paper);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:10}.nav{max-width:var(--max);margin:auto;padding:14px 24px;display:flex;align-items:center;gap:24px}.brand{font:800 20px/1 Arial,sans-serif;color:var(--ink);text-decoration:none;margin-right:auto}.brand small{display:block;font:600 10px/1.2 Arial,sans-serif;letter-spacing:.12em;color:var(--frog);margin-top:5px}.navlinks{display:flex;gap:18px;flex-wrap:wrap}.navlinks a{font:700 13px/1.2 Arial,sans-serif;color:var(--ink);text-decoration:none}.navlinks a:hover{color:var(--frog)}main{max-width:var(--max);margin:auto;padding:0 24px 80px}.hero{padding:86px 0 62px;display:grid;grid-template-columns:1.35fr .65fr;gap:64px;align-items:end}.kicker{font:800 12px/1 Arial,sans-serif;letter-spacing:.16em;text-transform:uppercase;color:var(--frog);margin-bottom:18px}h1{font:700 clamp(42px,6vw,76px)/.98 Georgia,serif;letter-spacing:-.035em;margin:0 0 24px}h2{font:700 clamp(30px,4vw,48px)/1.05 Georgia,serif;letter-spacing:-.025em;margin:0 0 20px}h3{font:800 18px/1.25 Arial,sans-serif;margin:0 0 10px}.lede{font-size:23px;line-height:1.45;max-width:840px}.heroaside{border-left:4px solid var(--frog);padding-left:22px;font-size:18px}.heroaside strong{font-family:Arial,sans-serif}.section{padding:68px 0;border-top:1px solid var(--line)}.section.noline{border:0}.sectionhead{max-width:800px;margin-bottom:34px}.sectionhead p{font-size:20px;color:var(--muted)}.grid2,.grid3,.grid4{display:grid;gap:20px}.grid2{grid-template-columns:repeat(2,1fr)}.grid3{grid-template-columns:repeat(3,1fr)}.grid4{grid-template-columns:repeat(4,1fr)}.card{background:var(--paper);border:1px solid var(--line);padding:26px}.card p:last-child{margin-bottom:0}.card .num{font:800 12px/1 Arial,sans-serif;color:var(--frog);letter-spacing:.1em}.stat{font:700 32px/1.1 Georgia,serif;margin:8px 0}.muted{color:var(--muted)}.dark{background:var(--dark);color:#edf5ef;margin-left:calc(50% - 50vw);margin-right:calc(50% - 50vw);padding:68px max(24px,calc((100vw - var(--max))/2 + 24px))}.dark a{color:#a8d7b8}.dark .card{background:#17291f;border-color:#35503f}.rule{font:700 clamp(28px,4vw,48px)/1.35 Georgia,serif;margin:0}.rule span{display:block}.compare{width:100%;border-collapse:collapse;background:var(--paper)}.compare th,.compare td{padding:16px 18px;border:1px solid var(--line);vertical-align:top}.compare th{font:800 13px/1.2 Arial,sans-serif;text-align:left;background:var(--frog2)}.compare td:first-child{font-weight:700}.eyebrow{font:800 11px/1 Arial,sans-serif;letter-spacing:.14em;text-transform:uppercase;color:var(--frog)}.evidence{display:grid;grid-template-columns:180px 1fr;gap:22px;padding:24px 0;border-top:1px solid var(--line)}.evidence:first-child{border-top:0}.evidence h3{font-size:20px}.tag{display:inline-block;font:800 10px/1 Arial,sans-serif;letter-spacing:.1em;text-transform:uppercase;padding:6px 8px;background:var(--frog2);color:var(--frog);margin-right:5px}.tag.open{background:#f1e8d6;color:#74561d}.tag.no{background:#eee;color:#555}.code{background:var(--code);border-left:4px solid var(--frog);padding:18px 20px;font:15px/1.55 Consolas,monospace;overflow:auto}.cta{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}.button{display:inline-block;padding:12px 17px;background:var(--frog);color:#fff;text-decoration:none;font:800 13px/1 Arial,sans-serif}.button.alt{background:transparent;color:var(--frog);border:1px solid var(--frog)}.note{border-left:4px solid var(--frog);padding:8px 0 8px 20px;color:var(--muted)}ul.clean{padding-left:20px}footer{border-top:1px solid var(--line);background:var(--paper)}.foot{max-width:var(--max);margin:auto;padding:34px 24px;display:grid;grid-template-columns:1fr auto;gap:24px;color:var(--muted);font-size:14px}.breadcrumbs{font:700 12px/1.2 Arial,sans-serif;color:var(--muted);padding-top:30px}.breadcrumbs a{color:var(--muted)}.pagehero{padding:52px 0 46px;max-width:900px}.pagehero h1{font-size:clamp(40px,5vw,64px)}.toc{background:var(--paper);border:1px solid var(--line);padding:22px}.toc a{display:block;padding:4px 0}.artifact{font:700 12px/1.4 Arial,sans-serif;color:var(--muted)}.warning{background:#fff7e8;border:1px solid #e7cf9b;padding:20px}.small{font-size:14px}.quote{font-size:27px;line-height:1.35;margin:0}.mono{font-family:Consolas,monospace}.cols{columns:2;column-gap:40px}@media(max-width:850px){.hero{grid-template-columns:1fr;gap:24px}.grid4,.grid3{grid-template-columns:1fr 1fr}.nav{align-items:flex-start}.navlinks{display:none}.evidence{grid-template-columns:1fr}.cols{columns:1}}@media(max-width:600px){body{font-size:16px}.grid2,.grid3,.grid4{grid-template-columns:1fr}.hero{padding-top:52px}.lede{font-size:20px}.foot{grid-template-columns:1fr}.compare{font-size:14px}.compare th,.compare td{padding:10px}}

.visual{background:var(--paper);border:1px solid var(--line);padding:24px;margin:30px 0}.visual svg{width:100%;height:auto;display:block}.visual figcaption{font:13px/1.45 Arial,sans-serif;color:var(--muted);margin-top:14px}.diagram text{font-family:Arial,sans-serif;fill:var(--ink)}.diagram .box{fill:#fff;stroke:#8ca397;stroke-width:2}.diagram .accent{fill:#e4f0e7;stroke:#21613d;stroke-width:2}.diagram .darkbox{fill:#173020;stroke:#21613d;stroke-width:2}.diagram .darktext{fill:#fff}.diagram .line{stroke:#21613d;stroke-width:3;fill:none}.diagram .dash{stroke:#718279;stroke-width:2;stroke-dasharray:7 6;fill:none}.diagram .label{font-size:15px;font-weight:700}.diagram .sub{font-size:12px;fill:#58645c}.diagram .smallwhite{font-size:12px;fill:#dbe9df}.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:24px 0}.metric{background:var(--paper);border:1px solid var(--line);padding:18px}.metric b{display:block;font:700 28px/1.05 Georgia,serif;margin:5px 0}.metric span{font:12px/1.35 Arial,sans-serif;color:var(--muted)}.inventory{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.inventory .item{background:var(--paper);border:1px solid var(--line);padding:18px}.inventory h3{font-size:16px}.inventory p{margin:0;color:var(--muted);font-size:15px}.barset{display:grid;gap:11px}.barrow{display:grid;grid-template-columns:150px 1fr 65px;align-items:center;gap:10px;font:13px/1.2 Arial,sans-serif}.bartrack{height:18px;background:#e5ebe6}.bar{height:100%;background:#21613d}.bar.alt{background:#789383}.caption{font:13px/1.45 Arial,sans-serif;color:var(--muted)}@media(max-width:750px){.metric-grid,.inventory{grid-template-columns:1fr}.barrow{grid-template-columns:105px 1fr 52px}}

/* v3 visual identity pass — based on the existing FrogNet site's editorial language */
:root{--bg:#f2f0e8;--paper:#fffef9;--ink:#111713;--muted:#5b625d;--frog:#0d6b3b;--frog-bright:#16a05d;--frog-pale:#dcecdf;--line:#b9c1b9;--dark:#07130d;--dark2:#0d2116;--acid:#b8e36f;--max:1200px}
body{background:var(--bg);background-image:linear-gradient(rgba(13,107,59,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(13,107,59,.035) 1px,transparent 1px);background-size:32px 32px}
header{background:rgba(7,19,13,.97);border:0;border-bottom:3px solid var(--frog-bright);box-shadow:0 4px 18px rgba(0,0,0,.18)}
.brand{color:#fff;font-size:22px;letter-spacing:-.02em}.brand small{color:var(--acid)}.navlinks a{color:#dce8df}.navlinks a:hover{color:var(--acid)}
main{background:transparent}.hero{position:relative;margin-left:calc(50% - 50vw);margin-right:calc(50% - 50vw);padding:104px max(24px,calc((100vw - var(--max))/2 + 24px)) 86px;background:radial-gradient(circle at 80% 15%,rgba(22,160,93,.25),transparent 30%),linear-gradient(135deg,#07130d 0%,#0b2417 65%,#103a24 100%);color:#f5faf6;overflow:hidden}.hero:after{content:"";position:absolute;right:-110px;bottom:-150px;width:460px;height:460px;border:1px solid rgba(184,227,111,.28);border-radius:50%;box-shadow:0 0 0 55px rgba(184,227,111,.035),0 0 0 110px rgba(184,227,111,.025)}.hero h1{max-width:900px;text-shadow:0 2px 0 rgba(0,0,0,.2)}.hero .lede{color:#e1e9e3}.hero .kicker{color:var(--acid)}.heroaside{border-left-color:var(--acid);color:#d9e7dd;position:relative;z-index:1}.heroaside strong{color:#fff}
.pagehero{position:relative;padding:76px 0 58px}.pagehero:before{content:"FROGNET";display:block;font:900 11px/1 Arial,sans-serif;letter-spacing:.24em;color:var(--frog);margin-bottom:20px}.pagehero h1{position:relative}.pagehero h1:after{content:"";display:block;width:84px;height:6px;background:var(--frog-bright);margin-top:24px}.breadcrumbs{letter-spacing:.08em;text-transform:uppercase}
.kicker,.eyebrow{color:var(--frog);font-weight:900}.section{position:relative;padding:82px 0;border-top:2px solid var(--ink)}.sectionhead{position:relative}.sectionhead:before{content:"§";position:absolute;left:-54px;top:-8px;font:900 42px/1 Georgia,serif;color:rgba(13,107,59,.22)}.sectionhead p{color:#49534d}.section h2{max-width:900px}
.dark{background:radial-gradient(circle at 10% 0,rgba(22,160,93,.18),transparent 25%),var(--dark);border-top:5px solid var(--frog-bright);border-bottom:5px solid var(--frog-bright)}.dark .kicker,.dark .eyebrow{color:var(--acid)}.dark h2,.dark h3{color:#fff}.dark p{color:#d9e4dc}.dark .card{background:#0d2116;border:1px solid #315841;box-shadow:none}.dark .card p{color:#cbd9cf}
.card{position:relative;background:var(--paper);border:0;border-top:5px solid var(--frog);padding:28px;box-shadow:0 8px 24px rgba(20,34,25,.09)}.card:after{content:"";position:absolute;right:0;bottom:0;width:28px;height:28px;border-right:1px solid rgba(13,107,59,.25);border-bottom:1px solid rgba(13,107,59,.25)}.card .num{font-size:11px;color:var(--frog);letter-spacing:.18em}.stat{font-size:38px;color:var(--frog)}
.grid3 .card:nth-child(2n){border-top-color:#315f46}.grid4 .card:nth-child(2n){border-top-color:#315f46}
.compare{box-shadow:0 8px 26px rgba(20,34,25,.08);border-top:5px solid var(--frog)}.compare th{background:var(--dark);color:#fff;border-color:#294032;letter-spacing:.05em}.compare td{background:rgba(255,254,249,.96)}
.visual{background:var(--paper);border:0;border-top:5px solid var(--frog);padding:32px;box-shadow:0 10px 32px rgba(20,34,25,.11)}.visual figcaption{border-top:1px solid var(--line);padding-top:14px;margin-top:20px}.diagram .accent{fill:#dcecdf;stroke:#0d6b3b}.diagram .darkbox{fill:#07130d;stroke:#16a05d}.diagram .line{stroke:#0d6b3b}.diagram .dash{stroke:#6f8075}
.metric{background:var(--dark);border:0;border-top:4px solid var(--frog-bright);color:#fff;box-shadow:0 7px 20px rgba(0,0,0,.12)}.metric b{color:var(--acid)}.metric span{color:#bfd0c4}.inventory{gap:18px}.inventory .item{background:var(--paper);border:0;border-left:5px solid var(--frog);padding:21px 22px;box-shadow:0 5px 18px rgba(20,34,25,.07)}.inventory .item:nth-child(4n+2),.inventory .item:nth-child(4n+3){border-left-color:#6c8c76}.inventory h3{font-size:17px}.inventory p{color:#505a54}
.evidence{grid-template-columns:205px 1fr;gap:30px;padding:30px 0;border-top:2px solid #aeb8b0}.evidence h3{font-size:22px}.tag{background:var(--dark);color:var(--acid);padding:7px 9px}.tag.open{background:#7a5612;color:#fff}.tag.no{background:#424b45;color:#fff}
.code{background:#07130d;color:#dff3e5;border-left:6px solid var(--frog-bright);box-shadow:0 7px 22px rgba(0,0,0,.12)}.note{border-left:6px solid var(--frog);background:rgba(255,254,249,.68);padding:18px 22px}.warning{border:0;border-left:6px solid #a56e08;background:#fff5d8;box-shadow:0 6px 18px rgba(0,0,0,.07)}
.button{background:var(--frog);padding:14px 20px;letter-spacing:.04em;box-shadow:0 4px 0 #084b2a}.button:hover{background:#0a5a32;transform:translateY(1px);box-shadow:0 3px 0 #084b2a}.button.alt{background:transparent;color:var(--frog);border:2px solid var(--frog);box-shadow:none}.hero .button.alt,.dark .button.alt{color:#fff;border-color:var(--acid)}
.rule{position:relative;padding-left:30px}.rule:before{content:"";position:absolute;left:0;top:.18em;bottom:.12em;width:7px;background:var(--frog-bright)}
.toc{border:0;border-top:5px solid var(--frog);box-shadow:0 8px 24px rgba(20,34,25,.08)}.toc a{padding:7px 0;border-bottom:1px dotted #cad1cb;text-decoration:none}.toc a:last-child{border:0}
footer{background:var(--dark);border:0;border-top:5px solid var(--frog-bright);color:#c8d6cc}.foot{color:#aebeb3;padding-top:46px;padding-bottom:46px}.foot a{color:var(--acid)}
.bartrack{height:22px;background:#dfe5df;border-radius:0}.bar{background:linear-gradient(90deg,#0d6b3b,#16a05d)}.bar.alt{background:#82978a}.barrow{font-weight:700}.caption{color:#505a54}
::selection{background:var(--acid);color:#07130d}
@media(max-width:850px){.sectionhead:before{display:none}.hero{padding-top:74px}.hero:after{opacity:.45}}

/* Teaching paths */
.twopath{display:grid;grid-template-columns:1fr 1fr;gap:26px;margin:32px 0}.pathcard{background:var(--paper);border-top:5px solid #6c8c76;padding:30px;box-shadow:0 8px 24px rgba(20,34,25,.09)}.pathcard.new{border-top-color:var(--frog)}.pathcard.old{border-top-color:#7c817d}.pathcard ol{padding-left:1.3em;line-height:1.8}.pathcard li{margin:.35em 0}.bigclaim{font-size:1.4rem;max-width:850px;font-weight:700;margin:34px 0}.journey{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin:30px 0}.journey a{display:flex;flex-direction:column;min-height:155px;padding:22px;background:var(--paper);border-top:5px solid var(--frog);box-shadow:0 5px 18px rgba(20,34,25,.07);text-decoration:none}.journey b{font-size:12px;letter-spacing:.14em;color:var(--frog)}.journey span{font-size:20px;font-weight:800;margin:8px 0;color:var(--ink)}.journey small{color:#505a54;line-height:1.45}.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:14px;margin:30px 0}.steps>div{background:var(--paper);padding:22px;border-top:4px solid var(--frog);box-shadow:0 5px 18px rgba(20,34,25,.07)}.steps b{font-size:28px;color:var(--frog)}.steps h3{font-size:18px;margin:.5em 0}.steps p{font-size:14px}.grid2{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}.hero .lede:first-of-type{font-size:1.25rem}.pagehero .lede{max-width:900px}@media(max-width:900px){.twopath,.grid2{grid-template-columns:1fr}.journey{grid-template-columns:repeat(2,1fr)}.steps{grid-template-columns:1fr 1fr}}@media(max-width:560px){.journey,.steps{grid-template-columns:1fr}}

.video{position:relative;width:100%;aspect-ratio:16/9;margin:1rem 0;background:#08110d;overflow:hidden;border-radius:10px}.video iframe{position:absolute;inset:0;width:100%;height:100%;border:0}

/* Complete capability inventory */
.inventory > ul{padding-left:1.25rem}.inventory li{margin:.42rem 0}.inventory li>ul{margin-top:.35rem}.inventory strong{color:var(--ink,#16231b)}

/* Front-page paradigm warning */
.paradigm-shift{margin-top:0;border-top:7px solid var(--frog-bright);border-bottom:2px solid var(--ink);padding:58px 54px 62px;background:var(--paper);box-shadow:0 12px 34px rgba(20,34,25,.10)}
.paradigm-shift .kicker{color:var(--frog);margin-bottom:14px}
.paradigm-shift h2{max-width:1050px;font-size:clamp(34px,4.5vw,58px);margin-bottom:30px}
.paradigm-shift p{max-width:1000px;font-size:21px;line-height:1.58;margin:0 0 20px}
.paradigm-shift p:last-child{margin-bottom:0;font-weight:700}
@media(max-width:700px){.paradigm-shift{padding:42px 24px 46px}.paradigm-shift p{font-size:18px}}


/* Learn: featured books */
.book-grid{align-items:stretch}.book-card{position:relative;display:flex;flex-direction:column;min-height:390px;padding:34px;background:var(--paper);border-top:6px solid var(--frog);box-shadow:0 10px 28px rgba(20,34,25,.10);overflow:hidden}.book-card h3{font:700 30px/1.05 Georgia,serif;margin:14px 0 16px}.book-card p{font-size:18px;max-width:560px}.book-card .button{margin-top:auto;align-self:flex-start}.book-label{font:900 11px/1 Arial,sans-serif;letter-spacing:.17em;text-transform:uppercase;color:var(--frog)}.book-card.croakus{background:radial-gradient(circle at 90% 0,rgba(22,160,93,.22),transparent 34%),linear-gradient(145deg,#07130d,#0d2116);color:#f3f8f4;border-top-color:var(--acid)}.book-card.croakus h3{color:#fff}.book-card.croakus p{color:#d3dfd6}.book-card.croakus .book-label{color:var(--acid)}.book-card.croakus .button{background:var(--acid);color:#07130d;box-shadow:0 4px 0 #78983f}.croakus-mark{font:900 clamp(38px,5vw,64px)/.78 Georgia,serif;letter-spacing:-.055em;color:#fff;margin:34px 0 16px}.croakus-mark span{color:var(--acid);letter-spacing:.02em}.book-card.croakus:after{content:"";position:absolute;right:-78px;bottom:-90px;width:260px;height:260px;border:1px solid rgba(184,227,111,.22);border-radius:50%;box-shadow:0 0 0 36px rgba(184,227,111,.025),0 0 0 72px rgba(184,227,111,.018);pointer-events:none}@media(max-width:700px){.book-card{min-height:330px;padding:28px}.croakus-mark{margin-top:26px}}