:root{
  --ink:#122019;          /* deep forest text */
  --ink-soft:#3f5749;     /* muted green-grey */
  --leaf:#1e8a4c;         /* living green */
  --leaf-deep:#0f6b3a;
  --solar:#f2b207;        /* funded-energy amber */
  --solar-deep:#c9920a;
  --mint:#e6f3ea;         /* pale panel */
  --mint-line:#cfe6d6;
  --paper:#fbfdfa;        /* daylight background */
  --paper-2:#f2f8f3;
  --white:#ffffff;
  --radius:18px;
  --radius-sm:12px;
  --wrap:1120px;
  --shadow:0 1px 2px rgba(18,32,25,.05), 0 12px 34px -14px rgba(18,32,25,.16);
  --shadow-sm:0 1px 2px rgba(18,32,25,.05), 0 6px 18px -10px rgba(18,32,25,.16);
  --sans:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  --display:"Bricolage Grotesque","Inter",sans-serif;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;font-family:var(--sans);color:var(--ink);
  background:var(--paper);line-height:1.6;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{font-family:var(--display);font-weight:700;line-height:1.08;letter-spacing:-.02em;margin:0}
p{margin:0}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px;width:100%}
.narrow{max-width:820px}
.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.skip{position:absolute;left:-999px;top:0;background:var(--ink);color:#fff;padding:10px 16px;border-radius:0 0 8px 0;z-index:100}
.skip:focus{left:0}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5em;
  font-weight:600;font-size:1rem;padding:.8em 1.35em;border-radius:999px;
  border:1.5px solid transparent;cursor:pointer;transition:transform .15s ease,background .15s ease,box-shadow .15s ease,color .15s ease;
  white-space:nowrap}
.btn-solid{background:var(--leaf);color:#fff;box-shadow:0 8px 20px -8px rgba(30,138,76,.6)}
.btn-solid:hover{background:var(--leaf-deep);transform:translateY(-2px)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--mint-line)}
.btn-ghost:hover{border-color:var(--leaf);color:var(--leaf-deep);transform:translateY(-2px)}
:focus-visible{outline:3px solid var(--solar);outline-offset:2px;border-radius:6px}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:50;background:rgba(251,253,250,.82);
  backdrop-filter:saturate(140%) blur(12px);border-bottom:1px solid var(--mint-line)}
.header-inner{display:flex;align-items:center;gap:24px;height:70px}
.brand{display:inline-flex;align-items:center;gap:.55em;font-family:var(--display);font-weight:800;font-size:1.35rem;letter-spacing:-.03em}
.brand-mark{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:11px;
  background:linear-gradient(150deg,var(--leaf),var(--leaf-deep));box-shadow:var(--shadow-sm)}
.brand-mark svg{fill:#eafff1}
.brand-ai{color:var(--leaf)}
.nav{display:flex;gap:26px;margin-left:auto;font-size:.96rem;font-weight:500;color:var(--ink-soft)}
.nav a{position:relative;padding:4px 0}
.nav a:hover{color:var(--ink)}
.nav a::after{content:"";position:absolute;left:0;bottom:-2px;width:0;height:2px;background:var(--leaf);transition:width .2s ease}
.nav a:hover::after{width:100%}
.header-cta{padding:.6em 1.15em;font-size:.95rem}

/* ---------- hero ---------- */
.hero{padding:72px 0 40px;background:
  radial-gradient(120% 80% at 88% -10%, rgba(242,178,7,.14), transparent 60%),
  radial-gradient(90% 70% at 0% 0%, rgba(30,138,76,.10), transparent 55%)}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center}
.eyebrow{font-family:var(--display);text-transform:uppercase;letter-spacing:.16em;
  font-size:.78rem;font-weight:700;color:var(--leaf-deep);margin-bottom:14px}
.hero h1{font-size:clamp(2.5rem,5.4vw,4rem);font-weight:800}
.hl{color:var(--leaf);position:relative}
.hl::after{content:"";position:absolute;left:0;right:0;bottom:.06em;height:.34em;
  background:linear-gradient(90deg,rgba(242,178,7,.5),rgba(242,178,7,.2));border-radius:4px;z-index:-1}
.lede{font-size:1.18rem;color:var(--ink-soft);margin-top:22px;max-width:36ch}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-note{margin-top:20px;font-size:.92rem;color:var(--ink-soft);display:flex;align-items:center;gap:.5em}
.hero-note::before{content:"";width:22px;height:2px;background:var(--solar);border-radius:2px;flex:none}

/* ---------- signature: energy ledger ---------- */
.ledger{background:var(--white);border:1px solid var(--mint-line);border-radius:var(--radius);
  padding:26px;box-shadow:var(--shadow)}
.ledger-head{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:22px}
.ledger-title{font-family:var(--display);font-weight:700;font-size:1.15rem}
.ledger-tag{font-size:.72rem;text-transform:uppercase;letter-spacing:.1em;color:var(--ink-soft)}
.ledger-row{display:grid;grid-template-columns:1fr auto;grid-template-areas:"label val" "bar bar";column-gap:12px;row-gap:8px;margin-bottom:20px}
.ledger-label{grid-area:label;display:flex;align-items:center;gap:.5em;font-weight:600;font-size:.95rem}
.dot{width:10px;height:10px;border-radius:50%;flex:none}
.dot-draw{background:var(--ink-soft)}
.dot-give{background:var(--solar)}
.ledger-bar{grid-area:bar;height:12px;border-radius:999px;background:var(--paper-2);overflow:hidden;border:1px solid var(--mint-line)}
.fill{display:block;height:100%;width:var(--to);border-radius:999px;transform-origin:left;
  animation:grow 1.1s cubic-bezier(.22,1,.36,1) both}
.fill-draw{background:linear-gradient(90deg,#6f8a7c,#42584c)}
.fill-give{background:linear-gradient(90deg,var(--solar),var(--leaf));animation-delay:.15s}
.ledger-val{grid-area:val;font-family:var(--display);font-weight:700;font-size:1.05rem;justify-self:end;align-self:center}
.ledger-val small{font-weight:500;color:var(--ink-soft);font-size:.72em}
.ledger-net{display:flex;justify-content:space-between;align-items:center;gap:16px;
  margin-top:24px;padding-top:22px;border-top:1px dashed var(--mint-line)}
.net-label{display:block;font-family:var(--display);font-weight:700;font-size:1rem}
.net-sub{display:block;font-size:.82rem;color:var(--ink-soft);max-width:24ch;margin-top:2px}
.net-val{font-family:var(--display);font-weight:800;font-size:1.7rem;color:var(--leaf-deep);white-space:nowrap}
.net-val small{font-size:.5em;font-weight:600;color:var(--ink-soft)}
@keyframes grow{from{transform:scaleX(0)}to{transform:scaleX(1)}}

/* ---------- stripe stats ---------- */
.stripe{background:var(--ink);color:#eafff1;margin-top:36px}
.stripe-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;padding:34px 24px}
.stat{display:flex;flex-direction:column;gap:6px}
.stat-num{font-family:var(--display);font-weight:800;font-size:2.3rem;line-height:1;letter-spacing:-.03em}
.stat-num .unit{font-size:1.1rem;color:var(--solar);margin-left:.1em}
.stat-cap{font-size:.9rem;color:#a9c6b5}

/* ---------- sections ---------- */
.section{padding:88px 0}
.section-tint{background:var(--paper-2);border-top:1px solid var(--mint-line);border-bottom:1px solid var(--mint-line)}
.section-head{max-width:760px;margin-bottom:48px}
.section h2{font-size:clamp(1.8rem,3.4vw,2.6rem)}
.section-sub{margin-top:18px}
.body-lg{font-size:1.14rem;color:var(--ink-soft)}
.narrow h2{font-size:clamp(1.8rem,3.4vw,2.5rem);margin-top:12px}
.narrow .body-lg{margin-top:22px}

.honest-list{list-style:none;padding:0;margin:34px 0 0;display:grid;gap:16px}
.honest-list li{position:relative;padding-left:34px;font-size:1.05rem;color:var(--ink-soft)}
.honest-list li strong{color:var(--ink);font-weight:600}
.honest-list li::before{content:"";position:absolute;left:0;top:.55em;width:16px;height:16px;
  border-radius:50%;background:var(--mint);border:2px solid var(--leaf)}

/* pillars */
.pillars{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.pillar{background:var(--white);border:1px solid var(--mint-line);border-radius:var(--radius);
  padding:32px 28px;box-shadow:var(--shadow-sm);transition:transform .18s ease,box-shadow .18s ease}
.pillar:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.pillar-index{font-family:var(--display);font-weight:800;font-size:1rem;color:var(--leaf);
  display:inline-block;padding:4px 11px;border:1.5px solid var(--mint-line);border-radius:999px;margin-bottom:20px}
.pillar h3{font-size:1.4rem;margin-bottom:10px}
.pillar p{color:var(--ink-soft)}
.pillar em{font-style:normal;color:var(--leaf-deep);font-weight:600}

/* models */
.models-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.model-card{background:var(--white);border:1px solid var(--mint-line);border-radius:var(--radius-sm);
  padding:24px;box-shadow:var(--shadow-sm);transition:border-color .18s ease,transform .18s ease}
.model-card:hover{border-color:var(--leaf);transform:translateY(-3px)}
.model-card header{display:flex;flex-direction:column;gap:10px;margin-bottom:12px}
.model-card h3{font-size:1.25rem}
.chip{align-self:flex-start;font-size:.76rem;font-weight:600;color:var(--leaf-deep);
  background:var(--mint);border-radius:999px;padding:4px 11px}
.model-card p{color:var(--ink-soft);font-size:.98rem}
.model-card-note{background:linear-gradient(160deg,var(--mint),var(--white));border-style:dashed}

/* credentials */
.cred-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.cred{background:var(--white);border:1px solid var(--mint-line);border-radius:var(--radius-sm);padding:26px}
.cred h4{font-size:1.12rem;margin-bottom:10px;display:flex;align-items:center;gap:.5em}
.cred h4::before{content:"";width:9px;height:9px;border-radius:50%;background:var(--leaf);flex:none}
.cred p{color:var(--ink-soft);font-size:.98rem}
.cred-honest{background:var(--mint)}
.cred-honest h4::before{background:var(--solar)}

/* cta */
.cta-section{text-align:center;background:
  radial-gradient(80% 120% at 50% 0%, rgba(30,138,76,.12), transparent 60%)}
.cta-inner{max-width:680px;margin:0 auto}
.cta-section h2{font-size:clamp(1.9rem,3.6vw,2.7rem)}
.cta-section .body-lg{margin-top:18px}
.cta-form{display:flex;gap:12px;margin:32px auto 0;max-width:460px}
.cta-form input{flex:1;padding:.85em 1.1em;border-radius:999px;border:1.5px solid var(--mint-line);
  font-family:var(--sans);font-size:1rem;background:var(--white);color:var(--ink)}
.cta-form input:focus{outline:none;border-color:var(--leaf)}
.cta-fine{margin-top:16px;font-size:.86rem;color:var(--ink-soft)}
.signup-thanks{font-size:1.1rem;font-weight:600;color:var(--leaf-deep);margin-top:24px}

/* footer */
.site-footer{background:var(--ink);color:#cfe0d5;padding:64px 0 32px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:40px}
.site-footer .brand{color:#eafff1}
.site-footer .brand-ai{color:var(--solar)}
.footer-tag{margin-top:16px;color:#9fbcac;max-width:32ch}
.footer-col{display:flex;flex-direction:column;gap:12px}
.footer-h{font-family:var(--display);font-weight:700;color:#eafff1;font-size:.82rem;
  text-transform:uppercase;letter-spacing:.12em;margin-bottom:2px}
.footer-col a:hover{color:var(--solar)}
.footer-bottom{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  margin-top:44px;padding-top:24px;border-top:1px solid rgba(255,255,255,.1);
  font-size:.84rem;color:#8fae9e}

/* ---------- responsive ---------- */
@media(max-width:900px){
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .lede{max-width:none}
  .nav{display:none}
  .stripe-grid{grid-template-columns:repeat(2,1fr);gap:26px}
  .pillars,.models-grid,.cred-grid,.footer-grid{grid-template-columns:1fr}
  .models-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:560px){
  .section{padding:64px 0}
  .hero{padding:48px 0 32px}
  .models-grid{grid-template-columns:1fr}
  .cta-form{flex-direction:column}
  .footer-bottom{flex-direction:column}
  .header-cta{display:none}
}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .fill{transform:none}
}