/* From small seeds: js/grow.js draws the tree; while motion is on, the stage pins and the tree grows with the scroll. */
.grow{--grow-travel:260svh;--grow-header:80px;--grow-dim:#a8aca2;
  --grow-needle-dark:#24402f;--grow-needle:#3a5c43;--grow-needle-light:#7f9a6c;
  --grow-bark-base:#5e5047;--grow-bark-mid:#8c5537;--grow-bark-top:#d4733f;--grow-bark-line:#3b2a22;
  --grow-stem:#7a6a3e;--grow-seed:#4a3022;--grow-wing:#c49a6c;--grow-root:#8a6a52;--grow-shoot:#e8dcc0;
  --grow-soil:rgba(120,98,70,.13);--grow-soil-line:rgba(21,34,29,.2);--grow-ground:rgba(21,34,29,.35);--grow-hills:rgba(21,34,29,.055);
  --grow-grass:#7d8a5c;--grow-heather:#9a6b8e;--grow-stone:#b3b0a4;--grow-stone-dark:#8e8b80;
  position:relative;border-top:1px solid var(--line)}
:root[data-light=night] .grow{--grow-dim:#46514a;
  --grow-needle-dark:#2b4936;--grow-needle:#43694c;--grow-needle-light:#8dac79;
  --grow-bark-base:#6a5c52;--grow-bark-mid:#93603f;--grow-bark-top:#cf7444;--grow-bark-line:#2a1d17;
  --grow-stem:#857546;--grow-seed:#a87a55;--grow-wing:#d8b48a;--grow-root:#9c7c62;--grow-shoot:#efe6cf;
  --grow-soil:rgba(233,229,218,.06);--grow-soil-line:rgba(233,229,218,.16);--grow-ground:rgba(233,229,218,.3);--grow-hills:rgba(233,229,218,.05);
  --grow-grass:#6c7a52;--grow-heather:#8a6283;--grow-stone:#5d645e;--grow-stone-dark:#474d48}

.grow-stage{display:grid;grid-template-columns:minmax(0,.92fr) minmax(0,1.08fr);gap:clamp(30px,5vw,90px);align-items:center;padding:120px var(--gutter)}
.grow-head h2{margin-top:25px;font-size:clamp(40px,4.7vw,76px)}
.grow-lede{margin-top:26px;font-size:16px;max-width:470px}
.grow-steps{list-style:none;margin:36px 0 0;padding:0;border-top:1px solid var(--line);max-width:520px}
.grow-steps li{display:grid;grid-template-columns:46px 1fr;gap:12px;padding:14px 0 15px;border-bottom:1px solid var(--line);transition:color .6s var(--ease)}
.grow-steps .grow-number{display:flex;align-items:center;gap:8px;font-size:11px;font-weight:650;letter-spacing:.1em;padding-top:5px}
.grow-steps h3{font-size:19px;letter-spacing:-.04em;line-height:1.3}
.grow-steps p{margin-top:3px;font-size:14px;line-height:1.6;color:var(--muted);transition:color .6s var(--ease)}
.grow-link{margin-top:30px}
.grow-art{margin:0;display:flex;flex-direction:column;height:clamp(520px,80svh,860px);min-width:0}
/* Size containment: the canvas's own pixel size never feeds back into the layout (Safari 17 grew or lost it). */
.grow-canvas{display:block;flex:1 1 0px;min-height:0;width:100%;contain:size}
.grow:not(.is-ready) .grow-canvas{visibility:hidden}
.grow-caption{display:flex;justify-content:space-between;align-items:center;gap:20px;border-top:1px solid var(--line);padding-top:13px;margin-top:12px;color:var(--muted)}
.grow-caption em{font-size:14px;letter-spacing:0}
.grow-caption span{font:600 10px/1.6 var(--sans);letter-spacing:.1em;text-transform:uppercase;font-variant-numeric:tabular-nums}

/* Pinned: the section becomes a long track, and the stage holds still while the tree grows. */
.grow.is-pinned{height:calc(var(--grow-head,0px) + 100svh + var(--grow-travel))}
.grow.is-pinned .grow-stage{position:sticky;top:0;height:100svh;padding:calc(var(--grow-header) + 26px) var(--gutter) 30px}
.grow.is-pinned .grow-art{height:calc(100svh - var(--grow-header) - 56px)}
.grow-progress{display:none}

/* One step at a time: the step in play rises into place, those passed lift away and those to come wait below. */
.grow.is-pinned .grow-progress{display:flex;gap:6px;margin-top:38px}
.grow-progress i{width:26px;height:2px;background:var(--grow-dim);transition:background .5s var(--ease)}
.grow-progress i.is-on{background:var(--ink)}
.grow-progress i.is-current{background:var(--orange)}
.grow.is-pinned .grow-steps{display:grid;margin-top:22px;border-top:0}
.grow.is-pinned .grow-steps li{grid-area:1/1;display:block;padding:0;border-bottom:0;opacity:0;transform:translateY(20px)}
.grow.is-pinned.is-live .grow-steps li{transition:opacity .4s var(--ease),transform .8s var(--ease)}
.grow.is-pinned .grow-steps li.is-past{transform:translateY(-20px)}
.grow.is-pinned .grow-steps li.is-active{opacity:1;transform:none;transition-delay:.15s}
.grow.is-pinned .grow-number{padding-top:0}
.grow.is-pinned .grow-steps h3{margin-top:12px;font-size:clamp(24px,2.3vw,34px);line-height:1.15;letter-spacing:-.05em}
.grow.is-pinned .grow-steps p{margin-top:10px;font-size:16px;max-width:430px}

@media(min-width:801px) and (max-height:720px){
  .grow.is-pinned .grow-head h2{font-size:clamp(36px,4vw,58px)}
  .grow.is-pinned .grow-lede{margin-top:18px;font-size:15px}
  .grow.is-pinned .grow-progress{margin-top:26px}
}
@media(min-width:801px) and (max-height:600px){
  .grow.is-pinned .grow-lede{display:none}
}
@media(max-width:1100px) and (min-width:801px){
  .grow-stage{gap:36px;grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
}

/* Phones: read the introduction first; then the stage pins, with one step at a time beneath the tree. */
@media(max-width:800px){
  .grow-stage{--grow-head-floats:1;display:flex;flex-direction:column;align-items:stretch;gap:0;padding:0 var(--gutter) 70px}
  .grow-copy{display:contents}
  .grow-head{padding-top:85px}
  .grow-head h2{font-size:clamp(38px,10vw,58px)}
  .grow-lede{font-size:15px}
  .grow-art{order:1;height:auto;aspect-ratio:4/5;margin-top:40px}
  .grow-progress{order:2}
  .grow-steps{order:3;margin-top:26px}
  .grow-link{order:4}
  .grow.is-pinned .grow-stage{top:calc(-1 * var(--grow-head,0px));height:calc(var(--grow-head,0px) + 100svh);padding:0 var(--gutter) 22px}
  .grow.is-pinned .grow-art{flex:1 1 0;min-height:0;height:auto;aspect-ratio:auto;margin-top:0;padding-top:calc(var(--grow-header) + 8px)}
  .grow.is-pinned .grow-progress{margin-top:16px}
  .grow.is-pinned .grow-steps{margin-top:14px}
  .grow.is-pinned .grow-steps h3{margin-top:8px;font-size:22px}
  .grow.is-pinned .grow-steps p{margin-top:6px;font-size:14px}
  .grow.is-pinned .grow-link{display:none}
  .grow-steps p{font-size:14px}
}
@media(max-width:500px){
  .grow{--grow-header:70px;--grow-travel:240svh}
  .grow-steps li{grid-template-columns:40px 1fr;gap:8px}
  .grow-steps h3{font-size:17px}
  .grow-steps p{font-size:13px}
}