:root{
  /* Greens taken from logo.png itself (#237227), not approximated.
     Contrast on --jb-paper 5.60:1, on white 5.99:1 — AA for body text. */
  --jb-green-900:#237227; --jb-green-800:#1C5C1F; --jb-green-700:#237227;
  --jb-green-500:#94C44F; --jb-green-050:#E8F3E4;
  --jb-paper:#FAF7F0; --jb-paper-deep:#F2EDE1; --jb-surface:#FFFFFF;
  --jb-ink:#1F2A17; --jb-grey-500:#656E76; --jb-border:#E4DDCE; --jb-border-strong:#8C877D;
  /* Logo gold. 1.75:1 on paper — DECORATIVE ONLY, never text. */
  --jb-accent:#A8420F; --jb-gold:#EBB54A;
  --r:14px; --r-lg:22px;
  --shadow:0 1px 2px rgba(31,42,23,.06),0 8px 24px rgba(31,42,23,.07);
  --shadow-lg:0 2px 6px rgba(31,42,23,.08),0 18px 48px rgba(31,42,23,.12);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0; background:var(--jb-paper); color:var(--jb-ink);
  font-family:"Nunito Sans",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  font-size:18px; line-height:1.6; -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{line-height:1.18; margin:0; letter-spacing:-.015em; font-weight:800; color:var(--jb-green-900)}
h1{font-size:clamp(2.3rem,5.2vw,4rem)}
h2{font-size:clamp(1.75rem,3.4vw,2.7rem)}
h3{font-size:1.35rem}
p{margin:0}
a{color:var(--jb-green-800)}
.wrap{max-width:1180px;margin:0 auto;padding:0 24px}
.lede{font-size:clamp(1.08rem,1.7vw,1.32rem); color:#3c4636; max-width:62ch}
.muted{color:var(--jb-grey-500)}
.eyebrow{
  font-size:.82rem;font-weight:800;letter-spacing:.14em;text-transform:uppercase;
  color:var(--jb-green-700);margin-bottom:14px
}

/* ---------- header ---------- */
header{
  position:sticky;top:0;z-index:60;background:rgba(250,247,240,.93);
  backdrop-filter:blur(10px);border-bottom:1px solid var(--jb-border)
}
.bar{display:flex;align-items:center;gap:22px;height:76px}
.brand{display:flex;align-items:center;text-decoration:none;margin-right:auto}
.brand img{height:46px;width:auto;display:block}
footer .brand img{height:54px;margin-bottom:16px}
nav.main{display:flex;gap:26px}
nav.main a{
  text-decoration:none;color:#3c4636;font-weight:600;font-size:.98rem;
  padding:8px 2px;border-bottom:2px solid transparent
}
nav.main a:hover{color:var(--jb-green-900);border-bottom-color:var(--jb-green-500)}
.lang{display:flex;background:var(--jb-green-050);border-radius:999px;padding:4px;gap:2px}
.lang button{
  border:0;background:none;font:inherit;font-size:.86rem;font-weight:700;cursor:pointer;
  padding:7px 15px;border-radius:999px;color:var(--jb-green-800);min-height:34px
}
.lang button[aria-pressed="true"]{background:var(--jb-green-900);color:#fff}
.menu-btn{display:none;border:1px solid var(--jb-border-strong);background:none;border-radius:10px;padding:9px 12px;cursor:pointer}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:15px 30px;border-radius:999px;font-weight:800;font-size:1rem;
  text-decoration:none;border:2px solid transparent;cursor:pointer;min-height:52px;
  transition:transform .12s ease, background .12s ease
}
.btn-primary{background:var(--jb-green-900);color:#fff}
.btn-primary:hover{background:var(--jb-green-800);transform:translateY(-1px)}
.btn-ghost{border-color:var(--jb-green-900);color:var(--jb-green-900);background:transparent}
.btn-ghost:hover{background:var(--jb-green-050)}
.btn-nav{padding:9px 22px;min-height:38px;font-size:.92rem}

/* ---------- hero ---------- */
.hero{padding:86px 0 40px;position:relative;overflow:hidden}
.hero:before{
  content:"";position:absolute;inset:0 0 auto;height:100%;
  background:radial-gradient(1100px 460px at 78% -8%,rgba(148,196,79,.20),transparent 62%);
  pointer-events:none
}
.hero .wrap{position:relative}
.hero-grid{display:grid;grid-template-columns:1.06fr .94fr;gap:56px;align-items:center}
.hero h1 span{color:var(--jb-green-700)}
.hero .lede{margin-top:22px}
.cta{display:flex;gap:14px;margin-top:34px;flex-wrap:wrap}
.hero-facts{display:flex;gap:34px;margin-top:40px;flex-wrap:wrap}
.hero-facts div strong{display:block;font-size:1.85rem;font-weight:800;color:var(--jb-green-900);line-height:1.1}
.hero-facts div span{font-size:.9rem;color:var(--jb-grey-500);font-weight:600}

/* ---------- bookshelf ---------- */
.shelf-unit{
  background:linear-gradient(180deg,var(--jb-surface),var(--jb-paper-deep));
  border:1px solid var(--jb-border);border-radius:var(--r-lg);
  padding:26px 26px 8px;box-shadow:var(--shadow-lg)
}
.shelf-row{margin-bottom:26px}
.shelf-label{
  display:flex;align-items:baseline;justify-content:space-between;margin-bottom:14px
}
.shelf-label h4{font-size:.98rem;font-weight:800;color:var(--jb-green-900);margin:0}
.shelf-label em{font-style:normal;font-size:.76rem;color:var(--jb-grey-500);font-weight:600}
.books{display:flex;gap:13px;align-items:flex-end}
.book{
  flex:1 1 0;aspect-ratio:526/810;border-radius:4px 8px 8px 4px;
  position:relative;overflow:hidden;background:var(--jb-paper-deep);
  box-shadow:0 3px 9px rgba(31,42,23,.22);transition:transform .2s ease, box-shadow .2s ease
}
.book:hover{transform:translateY(-8px) rotate(-1deg);box-shadow:0 10px 22px rgba(31,42,23,.28)}
.book img{width:100%;height:100%;object-fit:cover;display:block}
.book:before{ /* spine shadow, so a flat cover reads as a book */
  content:"";position:absolute;left:0;top:0;bottom:0;width:9px;z-index:2;
  background:linear-gradient(90deg,rgba(0,0,0,.30),rgba(0,0,0,.06) 60%,rgba(255,255,255,.14))
}
.book:after{ /* page edge */
  content:"";position:absolute;right:0;top:0;bottom:0;width:3px;z-index:2;
  background:linear-gradient(90deg,rgba(255,255,255,0),rgba(255,255,255,.45))
}
.shelf-plank{
  height:11px;border-radius:3px;margin:0 -8px 24px;
  background:linear-gradient(180deg,#E3D8C2,#C6B79A);
  box-shadow:0 5px 10px rgba(31,42,23,.13)
}
.pill{
  display:inline-block;font-size:.62rem;font-weight:800;padding:3px 9px;border-radius:999px;
  background:var(--jb-green-050);color:var(--jb-green-900);align-self:flex-start
}
.badge-avail{
  display:inline-flex;align-items:center;gap:8px;background:var(--jb-green-050);
  color:var(--jb-green-900);font-weight:800;font-size:.84rem;padding:9px 17px;border-radius:999px
}
.dot{width:9px;height:9px;border-radius:50%;background:var(--jb-green-700)}

/* ---------- sections ---------- */
section{padding:88px 0}
.sec-head{max-width:70ch;margin-bottom:52px}
.sec-head .lede{margin-top:18px}
.alt{background:var(--jb-surface);border-top:1px solid var(--jb-border);border-bottom:1px solid var(--jb-border)}

.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:26px}
.card{
  background:var(--jb-surface);border:1px solid var(--jb-border);border-radius:var(--r-lg);
  padding:32px;box-shadow:var(--shadow)
}
.alt .card{background:var(--jb-paper)}
.card h3{margin-bottom:12px}
.card p{color:#46503f;font-size:1rem}
.icon{
  width:52px;height:52px;border-radius:14px;background:var(--jb-green-050);
  display:grid;place-items:center;margin-bottom:20px
}
.card ul{margin:16px 0 0;padding-left:20px;color:#46503f;font-size:.97rem}
.card li{margin-bottom:8px}
.card li::marker{color:var(--jb-green-500)}

/* licence explainer */
.licence{
  display:grid;grid-template-columns:1fr 1fr;gap:0;border:1px solid var(--jb-border);
  border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--shadow)
}
.licence > div{padding:38px}
.licence .no{background:var(--jb-paper-deep)}
.licence .yes{background:var(--jb-green-900);color:#fff}
.licence .yes h3{color:#fff}
.licence .yes p{color:rgba(255,255,255,.9)}
.licence h3{margin-bottom:14px;font-size:1.18rem}
.licence p{font-size:1rem;color:#46503f}
.tag{
  display:inline-block;font-size:.72rem;font-weight:800;letter-spacing:.1em;text-transform:uppercase;
  margin-bottom:14px;opacity:.8
}

/* steps */
.steps{counter-reset:s;display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.step{position:relative;padding-top:60px}
.step:before{
  counter-increment:s;content:counter(s);
  position:absolute;top:0;left:0;width:46px;height:46px;border-radius:50%;
  background:var(--jb-green-900);color:#fff;display:grid;place-items:center;
  font-weight:800;font-size:1.12rem
}
.step h4{font-size:1.06rem;margin-bottom:8px;color:var(--jb-green-900);font-weight:800}
.step p{font-size:.95rem;color:#46503f}

/* ecosystem */
.eco{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.eco a{
  text-decoration:none;display:block;background:var(--jb-surface);border:1px solid var(--jb-border);
  border-radius:var(--r-lg);padding:30px;box-shadow:var(--shadow);transition:transform .15s ease
}
.eco a:hover{transform:translateY(-3px);border-color:var(--jb-green-500)}
.eco .k{font-size:.74rem;font-weight:800;letter-spacing:.12em;text-transform:uppercase;color:var(--jb-grey-500)}
.eco h3{margin:10px 0 10px}
.eco p{font-size:.96rem;color:#46503f}
.eco .this{border-color:var(--jb-green-900);border-width:2px;background:var(--jb-green-050)}

/* cta band */
.band{background:var(--jb-green-900);color:#fff;border-radius:var(--r-lg);padding:60px;text-align:center}
.band h2{color:#fff;margin-bottom:16px}
.band p{color:rgba(255,255,255,.9);max-width:56ch;margin:0 auto 30px}
.band .btn-primary{background:#fff;color:var(--jb-green-900)}
.band .btn-primary:hover{background:var(--jb-green-050)}

/* footer */
footer{background:var(--jb-paper-deep);border-top:1px solid var(--jb-border);padding:64px 0 34px;margin-top:20px}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:44px;margin-bottom:44px}
.foot-grid h5{font-size:.8rem;font-weight:800;letter-spacing:.12em;text-transform:uppercase;color:var(--jb-green-900);margin:0 0 16px}
.foot-grid ul{list-style:none;margin:0;padding:0}
.foot-grid li{margin-bottom:11px}
.foot-grid a{color:#46503f;text-decoration:none;font-size:.96rem}
.foot-grid a:hover{color:var(--jb-green-900);text-decoration:underline}
.legal{border-top:1px solid var(--jb-border);padding-top:26px;font-size:.87rem;color:var(--jb-grey-500)}
.legal p{margin-bottom:8px}
.legal strong{color:#3c4636}

@media(max-width:960px){
  .hero-grid,.grid-3,.grid-2,.licence,.steps,.eco,.foot-grid{grid-template-columns:1fr}
  .steps{gap:30px}
  nav.main{display:none}
  .hero{padding-top:52px}
  section{padding:64px 0}
  .band{padding:42px 26px}
  .licence > div{padding:30px}
}
@media(max-width:640px){
  body{font-size:17px}
  .books .book:nth-child(n+4){display:none}
  .brand img{height:38px}
}