/* Infinite Carbon guides: a sober, document-first layout. One typeface; ICN green only for actions and links. */
@font-face { font-family: "Hanken Grotesk"; src: url("hankengrotesk-400.woff2") format("woff2"); font-weight: 400; font-display: swap; }
@font-face { font-family: "Hanken Grotesk"; src: url("hankengrotesk-600.woff2") format("woff2"); font-weight: 600; font-display: swap; }
@font-face { font-family: "Hanken Grotesk"; src: url("hankengrotesk-700.woff2") format("woff2"); font-weight: 700; font-display: swap; }

:root {
  --paper: #ffffff;
  --stone: #eef1ee;
  --ink: #1e2522;
  --muted: #59625d;
  --rule: #d8ddd9;
  --forest: #0c3f37;
  --forest-2: #145247;
  --focus: #2f7d63;
  --err: #9b2c2c;
  --sans: "Hanken Grotesk", system-ui, -apple-system, "Segoe UI", sans-serif;
  --wide: 1120px;
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; font-family: var(--sans); font-size: 17px; line-height: 1.6; color: var(--ink); background: var(--paper); }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--forest); text-underline-offset: 3px; }
a:hover { color: var(--forest-2); }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; border-radius: 2px; }
.wrap { max-width: var(--wide); margin: 0 auto; padding: 0 24px; }
@media (max-width: 560px) { .wrap { padding: 0 16px; } }

h1, h2, h3 { font-weight: 700; line-height: 1.2; color: var(--ink); margin: 0; }
h1 { font-size: clamp(32px, 4.6vw, 46px); letter-spacing: -0.015em; }
h2 { font-size: clamp(25px, 3vw, 30px); letter-spacing: -0.01em; }
h3 { font-size: 21px; }
p { margin: 0 0 1em; }
.lede { font-size: 19px; color: var(--muted); max-width: 60ch; }
.small { font-size: 14px; color: var(--muted); }

/* Header */
header.site { border-bottom: 1px solid var(--rule); background: var(--paper); }
header.site .wrap { display: flex; align-items: center; justify-content: space-between; gap: 20px; min-height: 72px; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; color: var(--ink); }
.brand img { height: 30px; }
.brand span { font-size: 15px; color: var(--muted); border-left: 1px solid var(--rule); padding-left: 12px; }
header.site nav { display: flex; gap: 22px; flex-wrap: wrap; font-size: 15px; }
header.site nav a { color: var(--ink); text-decoration: none; }
header.site nav a:hover { color: var(--forest); text-decoration: underline; }

/* Buttons */
.btn { display: inline-block; background: var(--forest); color: #fff; font: 600 16px/1 var(--sans); text-decoration: none; padding: 14px 20px; border-radius: 6px; border: 1px solid var(--forest); cursor: pointer; text-align: center; }
.btn:hover { background: var(--forest-2); color: #fff; }
.btn.quiet { background: transparent; color: var(--forest); }
.btn.quiet:hover { background: var(--stone); color: var(--forest); }
.btn[disabled] { opacity: .6; cursor: wait; }
.actions { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }

/* Hero: the real pages are the centrepiece */
.hero { padding: 64px 0 72px; }
.hero .wrap { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); gap: 56px; align-items: center; }
.hero h1 { max-width: 15ch; margin-bottom: 20px; }
.hero .lede { margin-bottom: 28px; }
.hero .facts { margin-top: 28px; font-size: 14px; color: var(--muted); }
.spread { position: relative; aspect-ratio: 100 / 94; }
.spread figure { margin: 0; position: absolute; width: 62%; box-shadow: 0 1px 2px rgba(20, 35, 30, .12), 0 12px 32px rgba(20, 35, 30, .14); background: #fff; }
.spread figure:nth-child(1) { left: 0; top: 7%; }
.spread figure:nth-child(2) { right: 0; top: 0; }
.spread-cap { margin: 14px 0 0; font-size: 14px; color: var(--muted); }
@media (max-width: 880px) {
  .hero { padding: 40px 0 48px; }
  .hero .wrap { grid-template-columns: 1fr; gap: 40px; }
  .spread { max-width: 520px; }
}

/* Sections */
section.band { padding: 72px 0; border-top: 1px solid var(--rule); }
section.band.stone { background: var(--stone); border-top: 0; }
section.band > .wrap > h2 { margin-bottom: 10px; }
section.band > .wrap > .lede { margin-bottom: 40px; }
@media (max-width: 560px) { section.band { padding: 52px 0; } }

/* Guide rows: document thumbnail, what it is, what's inside, price */
.guide { display: grid; grid-template-columns: 150px minmax(0, 1.4fr) minmax(0, 1fr) 190px; gap: 32px; padding: 36px 0; border-top: 1px solid var(--rule); align-items: start; }
.guide:last-of-type { border-bottom: 1px solid var(--rule); }
.guide .thumb { border: 1px solid var(--rule); box-shadow: 0 6px 18px rgba(20, 35, 30, .10); }
.guide h3 a { color: var(--ink); text-decoration: none; }
.guide h3 a:hover { text-decoration: underline; }
.guide .who { font-size: 15px; color: var(--muted); margin-top: 8px; }
.guide .desc { margin-top: 10px; }
.guide .inside { font-size: 15px; }
.guide .inside b { display: block; margin-bottom: 6px; font-size: 15px; }
.guide .inside ul { margin: 0; padding-left: 18px; color: var(--muted); }
.guide .inside li { margin-bottom: 3px; }
.guide .buy { display: flex; flex-direction: column; gap: 10px; }
.price { font-size: 24px; font-weight: 700; }
.price small { display: block; font-size: 14px; font-weight: 400; color: var(--muted); }
@media (max-width: 980px) {
  .guide { grid-template-columns: 120px minmax(0, 1fr); gap: 20px 24px; }
  .guide .inside, .guide .buy { grid-column: 2; }
}
@media (max-width: 560px) {
  .guide { grid-template-columns: 84px minmax(0, 1fr); }
  .guide .inside, .guide .buy { grid-column: 1 / -1; }
  .guide .buy { flex-direction: row; flex-wrap: wrap; align-items: center; }
  .guide .buy .price { width: 100%; }
}
.bundle { margin-top: 28px; display: flex; justify-content: space-between; align-items: center; gap: 20px; flex-wrap: wrap; }
.bundle p { margin: 0; max-width: 60ch; }

/* Two-column text blocks */
.cols { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 56px; }
@media (max-width: 820px) { .cols { grid-template-columns: 1fr; gap: 32px; } }
.cols ul { padding-left: 20px; }
table.plain { width: 100%; border-collapse: collapse; font-size: 16px; }
table.plain th, table.plain td { text-align: left; padding: 12px 0; border-bottom: 1px solid var(--rule); vertical-align: top; }
table.plain th { font-weight: 600; width: 38%; padding-right: 16px; }
.offer { padding: 28px 0; border-top: 1px solid var(--rule); display: grid; grid-template-columns: minmax(0, 1fr) 190px; gap: 32px; align-items: start; }
.offer:last-child { border-bottom: 1px solid var(--rule); }
.offer p { margin: 8px 0 0; color: var(--muted); max-width: 64ch; }
@media (max-width: 640px) { .offer { grid-template-columns: 1fr; gap: 16px; } }
.people { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 24px; margin-top: 8px; }
.people div { border-left: 2px solid var(--forest); padding-left: 14px; }
.people b { display: block; }
.steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 28px; }
.steps h3 { font-size: 17px; margin-bottom: 6px; }
.steps p { color: var(--muted); font-size: 16px; margin: 0; }

/* Product page */
.crumbs { font-size: 14px; color: var(--muted); padding-top: 28px; }
.crumbs a { color: var(--muted); }
.product { display: grid; grid-template-columns: minmax(0, 1fr) 340px; gap: 56px; padding: 20px 0 72px; align-items: start; }
.product h1 { margin: 6px 0 16px; }
.pages { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; margin: 32px 0 12px; }
.pages a { display: block; border: 1px solid var(--rule); box-shadow: 0 4px 14px rgba(20, 35, 30, .10); }
.tool { margin: 28px 0 8px; border: 1px solid var(--rule); }
.product h2 { font-size: 22px; margin: 40px 0 12px; }
.product ol, .product ul { padding-left: 22px; }
.panel { border: 1px solid var(--rule); border-radius: 8px; padding: 24px; background: var(--paper); }
.sticky { position: sticky; top: 24px; }
.panel .price { margin-bottom: 4px; }
.panel ul { padding-left: 20px; font-size: 15px; color: var(--muted); }
.panel .btn { width: 100%; margin-top: 10px; }
@media (max-width: 900px) {
  .product { grid-template-columns: 1fr; gap: 32px; }
  .sticky { position: static; }
}
@media (max-width: 480px) { .pages { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; } }

/* Forms, checkout, order pages */
.page { padding: 40px 0 72px; }
.page h1 { font-size: clamp(28px, 3.6vw, 36px); margin-bottom: 12px; }
.page h2 { font-size: 21px; margin: 28px 0 8px; }
.two { display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr); gap: 32px; align-items: start; margin-top: 24px; }
@media (max-width: 820px) { .two { grid-template-columns: 1fr; } }
form .row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 560px) { form .row { grid-template-columns: 1fr; } }
label { display: block; font-size: 15px; font-weight: 600; margin: 0 0 16px; }
label span { font-weight: 400; color: var(--muted); }
input, select, textarea { display: block; width: 100%; margin-top: 6px; padding: 11px 12px; font: 400 16px/1.4 var(--sans); border: 1px solid #b9c2bc; border-radius: 6px; background: #fff; color: var(--ink); }
input:focus, select:focus, textarea:focus { outline: 3px solid var(--focus); outline-offset: 0; border-color: var(--focus); }
label.check { display: flex; gap: 10px; align-items: flex-start; font-weight: 400; }
label.check input { width: auto; margin-top: 5px; }
.summary table { width: 100%; border-collapse: collapse; font-size: 16px; }
.summary td { padding: 8px 0; border-bottom: 1px solid var(--rule); }
.summary td:last-child { text-align: right; }
.summary tr.total td { font-weight: 700; font-size: 18px; border-bottom: 0; }
.msg { padding: 12px 14px; border-radius: 6px; margin: 0 0 16px; display: none; }
.msg.err { display: block; background: #fbecec; color: var(--err); }
.msg.ok { display: block; background: #e7f2ec; color: var(--forest); }
.files a { display: flex; justify-content: space-between; gap: 12px; padding: 14px 16px; border: 1px solid var(--rule); border-radius: 6px; margin-bottom: 8px; text-decoration: none; color: var(--ink); }
.files a:hover { border-color: var(--forest); }
.files a span:last-child { color: var(--forest); font-weight: 600; }
.muted { color: var(--muted); font-size: 15px; }
.eyebrow { font-size: 15px; font-weight: 600; color: var(--forest); }
.prose { max-width: 72ch; }

/* Footer: the full legal identity, always visible */
footer.site { border-top: 1px solid var(--rule); background: var(--stone); font-size: 15px; color: var(--muted); padding: 40px 0; }
footer.site .wrap { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); gap: 32px; }
footer.site b { color: var(--ink); }
footer.site nav { display: flex; flex-wrap: wrap; gap: 8px 20px; }
footer.site nav a { color: var(--ink); }
@media (max-width: 720px) { footer.site .wrap { grid-template-columns: 1fr; } }