:root {
  --ink: #0b0b0b; --paper: #fafafa; --card: #ffffff;
  --muted: #52514e; --line: #e6e6e3;
  --green: #4b8b52; --green-bright: #6fb56a; --green-deep: #2e5e36;
  --display: Georgia, "Times New Roman", serif;
}
@media (prefers-color-scheme: dark) {
  :root { --ink: #fafafa; --paper: #101010; --card: #171717; --muted: #a3a39e; --line: #2a2a28; --green: #5aab63; --green-bright: #7cc576; --green-deep: #7cc576; }
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--paper); color: var(--ink); line-height: 1.6;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  overflow-x: hidden;
}
main { max-width: 720px; margin: 0 auto; padding: 3rem 1.5rem 2rem; position: relative; z-index: 1; }

/* living background: drifting washes + dot soil + falling leaves */
.bg { position: fixed; inset: 0; z-index: 0; pointer-events: none; overflow: hidden; }
.blob { position: absolute; border-radius: 50%; filter: blur(60px); opacity: .13; background: var(--green-bright); }
.b1 { width: 46vmax; height: 46vmax; top: -13vmax; left: -15vmax; animation: drift1 70s ease-in-out infinite alternate; }
.b2 { width: 34vmax; height: 34vmax; bottom: -10vmax; right: -11vmax; background: var(--green); opacity: .10; animation: drift2 90s ease-in-out infinite alternate; }
.b3 { width: 20vmax; height: 20vmax; top: 36%; right: 4%; opacity: .07; animation: drift1 110s ease-in-out infinite alternate-reverse; }
@keyframes drift1 { to { transform: translate(6vmax, 5vmax) scale(1.12); } }
@keyframes drift2 { to { transform: translate(-5vmax, -6vmax) scale(.92); } }
.soil { position: absolute; inset: 0; background-image: radial-gradient(var(--line) 1.1px, transparent 1.5px); background-size: 24px 24px; opacity: .55; mask-image: linear-gradient(180deg, transparent, #000 15%, #000 85%, transparent); -webkit-mask-image: linear-gradient(180deg, transparent, #000 15%, #000 85%, transparent); }

.leaves { position: fixed; inset: 0; z-index: 0; pointer-events: none; overflow: hidden; }
.leaf { position: absolute; top: -8vh; animation: fall linear infinite; }
.leaf i { display: block; width: 100%; height: 100%; background: var(--green-bright); border-radius: 0 70% 70% 70%; opacity: .45; animation: sway 3.2s ease-in-out infinite alternate; }
.leaf:nth-child(1) { left: 4%;  --d: 21s; --s: 11px; }
.leaf:nth-child(2) { left: 19%; --d: 29s; --s: 8px;  animation-delay: -7s; }
.leaf:nth-child(3) { left: 40%; --d: 25s; --s: 14px; animation-delay: -15s; }
.leaf:nth-child(4) { left: 62%; --d: 33s; --s: 9px;  animation-delay: -3s; }
.leaf:nth-child(5) { left: 77%; --d: 23s; --s: 12px; animation-delay: -11s; }
.leaf:nth-child(6) { left: 92%; --d: 27s; --s: 7px;  animation-delay: -19s; }
.leaf { width: var(--s); height: var(--s); animation-duration: var(--d); }
@keyframes fall { to { transform: translateY(114vh); } }
@keyframes sway { from { transform: rotate(35deg) translateX(-13px); } to { transform: rotate(72deg) translateX(13px); } }

/* header: logo + falling seed drop */
header { text-align: center; margin-bottom: 1.6rem; }
.logo { width: 100%; max-width: 460px; height: auto; overflow: visible; }
.logo .wordmark { font-family: var(--display); font-size: 60px; font-weight: 400; fill: var(--ink); }
.logo .tagline { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; font-size: 15px; fill: var(--muted); }
.logo .logovine { stroke: var(--green); stroke-dasharray: 176; stroke-dashoffset: 176; }
.logo .logoleaf { fill: var(--green-bright); stroke: var(--green); transform-origin: 71px 124px; transform: scale(0); }
.logo .logoleaf.right { transform-origin: 139px 124px; }
.logo .logodiv { stroke: var(--line); }
body.loaded .logo .logovine { animation: draw 1.1s .2s cubic-bezier(.3,.6,.3,1) forwards; }
body.loaded .logo .logoleaf { animation: leafpop .55s 1.15s cubic-bezier(.2,.85,.3,1.25) forwards; }
body.loaded .logo .logoleaf.left { animation: leafpop .55s 1.3s cubic-bezier(.2,.85,.3,1.25) forwards; }
.logo .wordmark, .logo .tagline, .logo .logodiv { opacity: 0; transition: opacity .9s .1s ease; }
body.loaded .logo .wordmark, body.loaded .logo .tagline, body.loaded .logo .logodiv { opacity: 1; }
@keyframes leafpop { to { transform: scale(1); } }
@keyframes leafsway { 0%,100% { transform: rotate(-4deg); } 50% { transform: rotate(4deg); } }
body.loaded .logo .logoleaf.right { animation: leafpop .55s 1.3s cubic-bezier(.2,.85,.3,1.25) forwards, leafsway 4.5s 2.2s ease-in-out infinite; }
body.loaded .logo .logoleaf.left { animation: leafpop .55s 1.15s cubic-bezier(.2,.85,.3,1.25) forwards, leafsway 4.5s 2.6s ease-in-out infinite reverse; }
header .dropzone { position: relative; height: 2.6rem; }
header .drop { position: absolute; left: 50%; top: 0; margin-left: -7px; width: 13px; height: 13px; border-radius: 50% 0 50% 50%; background: var(--green-bright); transform: rotate(45deg); animation: drop 3.8s cubic-bezier(.55,0,.85,.5) infinite; }
@keyframes drop { 0%,72% { transform: translateY(0) rotate(45deg); opacity: 0; } 80% { opacity: .9; } 100% { transform: translateY(38px) rotate(45deg); opacity: 0; } }
header .soilmark { display: block; margin: .1rem auto 0; width: 66px; height: 2px; border-radius: 2px; background: linear-gradient(90deg, transparent, var(--green), transparent); }

.overline { text-align: center; font-size: .74rem; text-transform: uppercase; letter-spacing: .16em; color: var(--green); font-weight: 700; margin: 1.4rem 0 .6rem; }
.lede { font-size: 1.08rem; margin: 0 0 1rem; }
h1.display { font-family: var(--display); font-weight: 400; font-size: 2rem; line-height: 1.18; margin: 1.2rem 0 1.6rem; letter-spacing: -.01em; }
h1.display em { font-style: italic; color: var(--green-deep); }

/* the loop as a growing vine: bead stem + sprouting leaf pairs + terminal bloom */
.vinescene { position: relative; margin: 2.6rem 0 0; padding: 0 0 52px 0; }
.vine { list-style: none; margin: 0; padding: 0; }
.vinescene .stem {
  position: absolute; left: 14px; top: 10px; bottom: 16px; width: 2.5px; border-radius: 3px;
  background: linear-gradient(180deg, var(--green-bright), var(--green));
  transform: scaleY(0); transform-origin: top;
  transition: transform 1.7s cubic-bezier(.3,.6,.3,1);
}
.vinescene.grown .stem { transform: scaleY(1); }

.vine li { position: relative; padding: .62rem 0 .62rem 3.6rem; opacity: 0; transform: translateY(8px); transition: opacity .55s ease, transform .55s ease, background .3s ease; }
.vine li::before {
  content: ""; position: absolute; left: 8.5px; top: 50%; margin-top: -7px;
  width: 14px; height: 14px; border-radius: 50%;
  background: var(--paper); border: 2.5px solid var(--green-bright);
  box-shadow: 0 0 0 3px var(--paper); z-index: 1;
  transition: background .3s ease;
}
.vine li:hover { background: rgb(111 181 106 / .07); }
.vine li:hover::before { background: var(--green-bright); }

.vine .sprout { position: absolute; left: -.5px; top: 50%; margin-top: -5px; width: 32px; height: 24px; z-index: 0; transform: scale(0); transform-origin: 16px 5px; transition: transform .55s cubic-bezier(.2,.85,.3,1.3); }
.vine .sprout svg { display: block; }

.vinescene.grown li { opacity: 1; transform: none; }
.vinescene.grown li .sprout { transform: scale(1); }
.vinescene.grown li:nth-child(1) { transition-delay: .10s; } .vinescene.grown li:nth-child(1) .sprout { transition-delay: .30s; }
.vinescene.grown li:nth-child(2) { transition-delay: .28s; } .vinescene.grown li:nth-child(2) .sprout { transition-delay: .48s; }
.vinescene.grown li:nth-child(3) { transition-delay: .46s; } .vinescene.grown li:nth-child(3) .sprout { transition-delay: .66s; }
.vinescene.grown li:nth-child(4) { transition-delay: .64s; } .vinescene.grown li:nth-child(4) .sprout { transition-delay: .84s; }
.vinescene.grown li:nth-child(5) { transition-delay: .82s; } .vinescene.grown li:nth-child(5) .sprout { transition-delay: 1.02s; }
.vinescene.grown li:nth-child(6) { transition-delay: 1s; }  .vinescene.grown li:nth-child(6) .sprout { transition-delay: 1.2s; }

.vine li strong { color: var(--green-deep); font-family: var(--display); font-weight: 400; font-size: 1.12rem; letter-spacing: .01em; }

/* terminal bloom */
.bud { position: absolute; left: 15.5px; bottom: 0; width: 26px; height: 26px; margin-left: -13px; opacity: 0; transform: scale(.3); transform-origin: 50% 50%; transition: opacity .5s 1.5s ease, transform .7s 1.5s cubic-bezier(.2,.85,.3,1.25); }
.vinescene.grown .bud { opacity: 1; transform: scale(1); animation: bloom 3.2s 2.4s ease-in-out infinite; }
@keyframes bloom { 0%,100% { transform: scale(1); } 50% { transform: scale(1.14); } }

/* closing arc: hand off plants the next understand */
.loopclose { text-align: center; margin: .4rem 0 2.6rem; color: var(--green); font-size: .92rem; font-weight: 600; }
.loopclose svg { display: block; margin: 0 auto .2rem; }
.loopclose .arc { stroke-dasharray: 200; stroke-dashoffset: 200; }
.vinescene.grown ~ .loopclose .arc { animation: draw 1.4s 1.9s ease forwards; }
@keyframes draw { to { stroke-dashoffset: 0; } }
.loopclose .seed { transform-origin: 60px 7px; animation: pulse 2.6s 2.1s ease-in-out infinite; }
@keyframes pulse { 0%,100% { opacity: .5; } 50% { opacity: 1; } }

.loop { text-align: center; font-size: 1.05rem; letter-spacing: .02em; margin: 2rem auto 2.4rem; color: var(--muted); font-weight: 600; max-width: 56ch; font-family: var(--display); }
section { margin-bottom: 1.4rem; scroll-margin-top: 1rem; }
h2 { font-family: var(--display); font-weight: 400; font-size: 1.45rem; margin: 2.6rem 0 1rem; }
h2.cardtitle { margin: 0 0 1rem; }
.cta { font-size: 1.22rem; line-height: 1.55; margin: .4rem 0 1rem; padding: 0 .2rem; color: var(--ink); font-family: var(--display); }
.cta em { font-style: italic; color: var(--green-deep); }
.stakes-lede { margin: 1.2rem 0 0; }
.step { margin: 1.6rem 0 .4rem; }
.steplabel { font-size: .74rem; font-weight: 700; text-transform: uppercase; letter-spacing: .12em; color: var(--green); margin: 0 0 .5rem; }
.step pre { margin: .55rem 0; }
.step .fine { margin: .2rem 0; }
.establish .row p { text-align: justify; hyphens: auto; }
h2 .kicker { display: block; font-family: -apple-system, sans-serif; font-size: .72rem; text-transform: uppercase; letter-spacing: .14em; color: var(--green); margin-bottom: .35rem; font-weight: 700; }

pre { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 1rem 1.2rem; overflow-x: auto; font-size: .9rem; line-height: 1.55; box-shadow: 0 1px 2px rgb(0 0 0 / .04); }
code { font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace; }
p code { background: var(--card); border: 1px solid var(--line); border-radius: 4px; padding: .05rem .35rem; font-size: .9em; }

.establish { display: grid; gap: .9rem; }
.establish .row { display: grid; grid-template-columns: 11rem 1fr; gap: .8rem; padding: .95rem 1.1rem; background: var(--card); border: 1px solid var(--line); border-radius: 12px; transition: transform .3s ease, border-color .3s ease, box-shadow .3s ease; }
.establish .row:hover { transform: translateY(-3px); border-color: var(--green-bright); box-shadow: 0 10px 24px -14px rgb(75 139 82 / .5); }
.establish .row h3 { margin: 0; font-size: .98rem; font-family: var(--display); font-weight: 600; }
.establish .row p { margin: 0; font-size: .95rem; }

.card { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 1.1rem 1.3rem; box-shadow: 0 1px 2px rgb(0 0 0 / .04); }
.stats { display: flex; gap: 2.2rem; margin: .4rem 0 .8rem; flex-wrap: wrap; }
.stat b { display: block; font-family: var(--display); font-weight: 400; font-size: 2.1rem; color: var(--green); line-height: 1.05; }
.stat span { font-size: .8rem; color: var(--muted); letter-spacing: .04em; }
.stat.zero b { color: var(--ink); }

.story .pull { font-family: var(--display); font-size: 1.28rem; line-height: 1.4; margin: .2rem 0 .4rem; }
.story .pull em { color: var(--green); font-style: normal; }
.links ul { padding-left: 1.2rem; margin: .5rem 0 1rem; }
.fine { color: var(--muted); font-size: .9rem; }
.btn { display: inline-block; background: var(--green); color: #fff; padding: .65rem 1.5rem; border-radius: 999px; text-decoration: none; font-weight: 600; font-family: var(--display); font-size: 1.02rem; transition: transform .25s ease, background .25s ease, box-shadow .25s ease; }
.btn:hover { background: var(--green-bright); transform: translateY(-2px); box-shadow: 0 10px 22px -12px rgb(75 139 82 / .55); }
.btnrow { text-align: center; margin-top: 1.6rem; }
a { color: var(--green); }
footer { border-top: 1px solid var(--line); margin-top: 3rem; padding: 1.5rem; text-align: center; color: var(--muted); font-size: .85rem; position: relative; z-index: 1; }

.fade { opacity: 0; transform: translateY(18px); transition: opacity .7s ease, transform .7s ease; }
.fade.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  .blob, .leaf, .leaf i, header .drop, .bud, .loopclose .seed { animation: none; }
  .logo .logovine { stroke-dashoffset: 0; }
  .logo .logoleaf { transform: scale(1); animation: none !important; }
  .logo .wordmark, .logo .tagline, .logo .logodiv { opacity: 1; transition: none; }
  .leaf { display: none; }
  .vinescene .stem { transition: none; transform: scaleY(1); }
  .vine li { transition: none; opacity: 1; transform: none; }
  .vine .sprout { transition: none; transform: scale(1); }
  .bud { transition: none; opacity: 1; transform: scale(1); }
  .loopclose .arc { animation: none; stroke-dashoffset: 0; }
  .fade { transition: none; opacity: 1; transform: none; }
  .establish .row, .btn { transition: none; }
}
@media (max-width: 560px) { .establish .row { grid-template-columns: 1fr; } .stats { gap: 1.2rem; } }