/* Treehouse Studio: sky, canopy, bark and one lit window. */
:root {
  --sky: #EAF2F4;
  --paper: #FFFFFF;
  --canopy: #1E5B3A;
  --canopy-deep: #143F28;
  --leaf: #CFE5C2;
  --ink: #14261C;
  --muted: #4E6157;
  --bark: #7A5332;
  --sun: #F5B83D;
  --line: #CFDDD8;
  --head: "Unbounded", "Albert Sans", system-ui, sans-serif;
  --body: "Albert Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--sky); color: var(--ink); font: 400 1.0625rem/1.6 var(--body); }
a { color: var(--canopy); text-underline-offset: .18em; text-decoration-thickness: .08em; }
a:hover { color: var(--canopy-deep); }
:focus-visible { outline: 3px solid var(--sun); outline-offset: 3px; border-radius: 6px; }
img, svg { display: block; max-width: 100%; }
.wrap { width: min(1080px, 100% - 40px); margin-inline: auto; }

/* header */
.top { padding: 22px 0; }
.top .wrap { display: flex; align-items: center; gap: 24px; }
.mark { display: flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font: 700 1.02rem/1 var(--head); letter-spacing: -.01em; }
.mark svg { width: 34px; height: 34px; }
.nav { margin-left: auto; display: flex; gap: 22px; }
.nav a { color: var(--ink); text-decoration: none; font-weight: 600; font-size: .98rem; }
.nav a:hover { color: var(--canopy); }

/* hero */
.hero { padding: 36px 0 72px; }
.hero .wrap { display: grid; grid-template-columns: 1.1fr .9fr; gap: 48px; align-items: center; }
.hero h1 { margin: 0 0 22px; font: 700 clamp(2.3rem, 5.4vw, 4.1rem)/1.04 var(--head); letter-spacing: -.035em; max-width: 12ch; }
.hero p { margin: 0 0 30px; font-size: 1.2rem; color: var(--muted); max-width: 34ch; }
.btn { display: inline-flex; align-items: center; gap: 10px; padding: 14px 22px; border-radius: 999px; background: var(--canopy); color: #FFFFFF; font-weight: 700; text-decoration: none; box-shadow: 0 4px 0 var(--canopy-deep); transition: transform .08s, box-shadow .08s; }
.btn:hover { color: #FFFFFF; background: #23693F; }
.btn:active { transform: translateY(4px); box-shadow: 0 0 0 var(--canopy-deep); }
.btn.quiet { background: var(--paper); color: var(--ink); box-shadow: 0 4px 0 var(--line); }
.btn.quiet:hover { color: var(--canopy); background: var(--paper); }
.house { width: 100%; height: auto; }
.house .win { fill: #3B4C42; }
.house .win.lit { animation: lightup .5s ease-out both; }
.house .win.lit:nth-of-type(2) { animation-delay: .35s; }
@keyframes lightup { from { fill: #3B4C42; } to { fill: var(--sun); } }
@media (prefers-reduced-motion: reduce) { .house .win.lit { animation: none; fill: var(--sun); } }

/* sections */
section { padding: 72px 0; }
.sec-title { margin: 0 0 12px; font: 700 clamp(1.6rem, 3vw, 2.2rem)/1.15 var(--head); letter-spacing: -.025em; }
.sec-lead { margin: 0 0 36px; color: var(--muted); max-width: 52ch; font-size: 1.1rem; }

/* the app */
.apps { background: var(--paper); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.app { display: grid; grid-template-columns: 300px 1fr; gap: 44px; align-items: center; }
.app-art { position: relative; aspect-ratio: 1; border-radius: 36px; background: radial-gradient(circle at 50% 62%, #FFFFFF 0 34%, transparent 35%), #E5322D; display: grid; place-items: center; overflow: hidden; }
.app-art img { width: 92%; height: auto; margin-top: 8%; }
.app h3 { margin: 0 0 6px; font: 700 2rem/1.1 var(--head); letter-spacing: -.03em; }
.app .tag { margin: 0 0 18px; font-weight: 700; color: #C42420; }
.app p { margin: 0 0 16px; max-width: 56ch; }
.facts { list-style: none; margin: 0 0 26px; padding: 0; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px 26px; max-width: 560px; }
.facts li { padding-left: 22px; position: relative; color: var(--muted); }
.facts li::before { content: ""; position: absolute; left: 0; top: .62em; width: 10px; height: 10px; border-radius: 3px; background: var(--leaf); box-shadow: inset 0 0 0 2px var(--canopy); }
.status { display: inline-block; margin: 0 0 22px; padding: 6px 12px; border-radius: 10px; background: var(--leaf); color: var(--canopy-deep); font-weight: 700; font-size: .92rem; }
.app-links { display: flex; flex-wrap: wrap; gap: 14px; }

/* about and contact */
.two { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; }
.two p { margin: 0 0 14px; max-width: 48ch; }
.card { padding: 28px; border-radius: 24px; background: var(--paper); border: 1px solid var(--line); }
.card dl { margin: 0; display: grid; grid-template-columns: 7.5em 1fr; gap: 12px 16px; }
.card dt { color: var(--muted); }
.card dd { margin: 0; font-weight: 600; }

/* footer */
.foot { padding: 34px 0 44px; color: var(--muted); font-size: .94rem; }
.foot .wrap { display: flex; flex-wrap: wrap; gap: 14px 28px; align-items: center; }
.foot nav { display: flex; flex-wrap: wrap; gap: 18px; margin-left: auto; }
.foot a { color: var(--muted); }

/* text pages (privacy, terms, support) */
.doc { padding: 24px 0 72px; }
.doc .wrap { max-width: 760px; }
.doc h1 { margin: 10px 0 6px; font: 700 clamp(1.9rem, 4vw, 2.6rem)/1.1 var(--head); letter-spacing: -.03em; }
.doc .updated { margin: 0 0 34px; color: var(--muted); }
.doc h2 { margin: 38px 0 10px; font: 700 1.25rem/1.25 var(--head); letter-spacing: -.015em; }
.doc p, .doc li { max-width: 68ch; }
.doc ul { padding-left: 1.2em; }
.doc li { margin-bottom: 6px; }
.doc .box { margin: 26px 0; padding: 20px 22px; border-radius: 18px; background: var(--paper); border: 1px solid var(--line); }
.back { font-weight: 600; text-decoration: none; }

@media (max-width: 820px) {
  .hero .wrap, .app, .two { grid-template-columns: 1fr; }
  .hero { padding-top: 12px; }
  .house { max-width: 420px; margin-inline: auto; }
  .app-art { max-width: 300px; }
  .facts { grid-template-columns: 1fr; }
  .nav { gap: 16px; }
  section { padding: 56px 0; }
}
@media (max-width: 420px) {
  .nav a:nth-child(1) { display: none; }
  .card dl { grid-template-columns: 1fr; gap: 2px; }
  .card dd { margin-bottom: 10px; }
}