/* GreenShift promo site. Colours are the corporate-design palette (CI,
   October 2026) and nothing else: no pure black, no white page ground,
   Leaf and Mint never as text on Paper, Ember only where the problem shows,
   and the one gradient (Forest -> Forest 2, 140deg) only on the opening and
   closing surfaces. No external font is loaded; the CI typefaces are used
   when the visitor has them installed. */

:root {
  /* Brand greens */
  --forest: #0B3D2E;
  --forest-2: #061F17;
  --pine: #14573F;
  --emerald: #1F8A5B;
  --leaf: #2BC46B;
  --mint: #7DE89E;
  --pale: #D8EFDD;
  /* Grounds, text, rules */
  --paper: #EEF5EB;
  --paper-2: #E2EDDC;
  --white: #FFFFFF;
  --ink: #08251C;
  --mute: #6F8C7C;
  --rule: rgba(8, 37, 28, 0.12);
  --rule-dark: rgba(238, 245, 235, 0.18);
  --paper-lead: rgba(238, 245, 235, 0.78);
  --paper-side: rgba(238, 245, 235, 0.65);
  --paper-foot: rgba(238, 245, 235, 0.55);
  /* Contrast tone: only where something is missing today */
  --ember: #C9621F;
  --ember-dark: #B4531F;
  --ember-soft: #FBEDE4;

  --font-head: "Space Grotesk", "Segoe UI", system-ui, -apple-system, Roboto, sans-serif;
  --font-body: Calibri, Carlito, "Segoe UI", system-ui, -apple-system, Roboto, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --wrap: 1120px;
  --radius: 14px;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 18px/1.6 var(--font-body);
}
img, svg { max-width: 100%; }
a { color: var(--emerald); text-underline-offset: 3px; }
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
  outline: 3px solid var(--emerald);
  outline-offset: 2px;
}
h1, h2, h3 {
  font-family: var(--font-head);
  color: var(--forest);
  line-height: 1.15;
  letter-spacing: -0.01em;
  margin: 0 0 0.5em;
}
h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); }
h2 { font-size: clamp(1.7rem, 3.4vw, 2.5rem); }
h3 { font-size: 1.25rem; }
p { margin: 0 0 1em; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }
.prose { max-width: 760px; }
section { padding: 88px 0; }
.alt { background: var(--paper-2); }

.skip {
  position: absolute; left: -9999px; top: 0;
  background: var(--forest); color: var(--paper); padding: 8px 14px;
}
.skip:focus { left: 8px; top: 8px; z-index: 10; }

/* Labels: Emerald on light, Mint on dark, set in the mono face */
.kicker {
  font: 600 0.8rem/1.4 var(--font-mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--emerald);
  margin-bottom: 14px;
}
.dark .kicker { color: var(--mint); }
.lead { font-size: 1.2rem; }

/* --- Header ------------------------------------------------------------- */
.nav {
  position: sticky; top: 0; z-index: 5;
  background: var(--paper);
  border-bottom: 1px solid var(--rule);
}
.nav-inner {
  max-width: var(--wrap); margin: 0 auto; padding: 12px 24px;
  display: flex; align-items: center; gap: 28px;
}
.brand { display: flex; align-items: center; flex: none; }
.brand img { display: block; height: 42px; width: auto; }
.brand .brand-mark { display: none; height: 40px; width: 40px; }
.nav-links { display: flex; gap: 22px; margin-left: auto; }
.nav-links a, .lang {
  color: var(--ink); text-decoration: none; font-weight: 600; font-size: 0.98rem;
}
.nav-links a:hover, .lang:hover { color: var(--emerald); }
.nav-links a[aria-current="page"] { color: var(--emerald); box-shadow: inset 0 -2px 0 var(--emerald); }
.lang {
  font-family: var(--font-mono); font-size: 0.85rem;
  border: 1px solid var(--rule); border-radius: 8px; padding: 4px 9px;
}
.nav-cta { flex: none; }

/* --- Buttons ------------------------------------------------------------ */
.btn {
  display: inline-block;
  font: 700 1rem/1 var(--font-head);
  padding: 15px 24px;
  border-radius: 10px;
  text-decoration: none;
  border: 2px solid transparent;
  cursor: pointer;
}
/* Result-tile pairing: Forest 2 on Leaf */
.btn-primary { background: var(--leaf); color: var(--forest-2); }
.btn-primary:hover { background: var(--mint); }
.btn-ghost { border-color: var(--forest); color: var(--forest); background: transparent; }
.btn-ghost:hover { background: var(--paper-2); }
.dark .btn-ghost { border-color: var(--rule-dark); color: var(--paper); }
.dark .btn-ghost:hover { background: rgba(238, 245, 235, 0.08); }
.btn-small { padding: 10px 16px; font-size: 0.92rem; }

.text-link { font-weight: 700; color: var(--emerald); text-decoration: none; }
.text-link:hover { text-decoration: underline; }

/* --- Dark surfaces ------------------------------------------------------ */
.dark { background: var(--forest); color: var(--paper); }
.dark h1, .dark h2, .dark h3 { color: var(--paper); }
.dark p { color: var(--paper-lead); }
.dark a:not(.btn) { color: var(--mint); }
.accent { color: var(--leaf); }
.gradient { background: linear-gradient(140deg, var(--forest), var(--forest-2)); }

/* --- Hero --------------------------------------------------------------- */
.hero { padding: 80px 0 88px; }
.hero-grid {
  display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 56px; align-items: center;
}
.hero h1 { margin-bottom: 22px; }
.hero .lead { color: var(--paper-lead); max-width: 34em; }
.hero-ctas { display: flex; flex-wrap: wrap; gap: 14px; margin: 30px 0 18px; }
.status {
  display: inline-flex; align-items: center; gap: 10px;
  font: 0.85rem/1.4 var(--font-mono); color: var(--mint); margin: 0;
}
.status::before {
  content: ""; width: 9px; height: 9px; border-radius: 50%; background: var(--leaf);
}
.whiteboard {
  margin: 0;
  background: var(--paper);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: 0 24px 60px rgba(6, 31, 23, 0.45);
}
.whiteboard svg { display: block; width: 100%; height: auto; }
.whiteboard figcaption {
  font: 0.8rem/1.4 var(--font-mono); color: var(--mute); text-align: center; margin-top: 6px;
}

/* --- Problem ------------------------------------------------------------ */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; }
/* Ember marks what is missing today; one of its two places on the page */
.consequences { list-style: none; margin: 0; padding: 0; }
.consequences li {
  border-left: 3px solid var(--ember);
  background: var(--white);
  padding: 16px 20px;
  margin-bottom: 12px;
  border-radius: 0 10px 10px 0;
  font-weight: 600;
  color: var(--ink);
}

/* --- Cards -------------------------------------------------------------- */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 36px; }
.card {
  background: var(--white);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  padding: 28px;
}
.card h3 { margin-bottom: 8px; }
.card p { margin: 0; }
.card .num {
  font: 600 0.85rem/1 var(--font-mono); color: var(--emerald); display: block; margin-bottom: 18px;
}
.card .icon {
  width: 44px; height: 44px; border-radius: 10px; background: var(--pine);
  display: grid; place-items: center; margin-bottom: 18px;
}
.card .icon svg { width: 24px; height: 24px; stroke: var(--paper); fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.after { margin-top: 28px; color: var(--ink); }

/* --- Value -------------------------------------------------------------- */
.values { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 36px; }
.value {
  border: 1px solid var(--rule-dark); border-radius: var(--radius); padding: 28px;
  background: var(--pine);
}
.value h3 { font-family: var(--font-mono); font-size: 0.85rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--mint); }
.value p { color: var(--paper); margin: 0; }
/* Result tile: Forest 2 on Leaf */
.value.result { background: var(--leaf); border-color: var(--leaf); }
.value.result h3, .value.result p { color: var(--forest-2); }

/* --- Steps -------------------------------------------------------------- */
.steps { list-style: none; padding: 0; margin: 36px 0 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; counter-reset: step; }
.steps li { position: relative; padding-top: 64px; }
.steps li::before {
  counter-increment: step; content: counter(step);
  position: absolute; top: 0; left: 0;
  width: 46px; height: 46px; border-radius: 12px;
  background: var(--pine); color: var(--paper);
  font: 700 1.2rem/46px var(--font-head); text-align: center;
}
.steps li:not(:last-child)::after {
  content: ""; position: absolute; top: 23px; left: 60px; right: 14px;
  border-top: 2px solid var(--rule);
}
.steps h3 { margin-bottom: 6px; }
.steps p { margin: 0; }
.more { margin-top: 32px; }

/* --- Proof -------------------------------------------------------------- */
.proof-grid { display: grid; grid-template-columns: 1.5fr 1fr; gap: 40px; align-items: start; margin-top: 32px; }
.shot { margin: 0; }
.shot .frame {
  background: var(--white); border: 1px solid var(--rule); border-radius: var(--radius);
  overflow: hidden;
}
.shot .frame img { display: block; width: 100%; height: auto; }
.shot .pending {
  aspect-ratio: 16 / 9; display: grid; place-items: center; text-align: center; padding: 24px;
  border: 2px dashed var(--rule); border-radius: var(--radius); background: var(--white);
  font: 0.9rem/1.5 var(--font-mono); color: var(--mute);
}
.shot figcaption { font: 0.82rem/1.4 var(--font-mono); color: var(--mute); margin-top: 10px; }
.facts { list-style: none; margin: 0; padding: 0; }
.facts li {
  display: flex; gap: 14px; align-items: flex-start;
  padding: 18px 0; border-bottom: 1px solid var(--rule); font-weight: 600;
}
.facts li:first-child { padding-top: 0; }
.facts svg { flex: none; width: 24px; height: 24px; stroke: var(--emerald); fill: none; stroke-width: 2.4; stroke-linecap: round; stroke-linejoin: round; margin-top: 2px; }

/* --- People ------------------------------------------------------------- */
.founders { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; margin-top: 32px; }
.person {
  display: flex; gap: 20px; align-items: center;
  background: var(--white); border: 1px solid var(--rule); border-radius: var(--radius); padding: 22px;
}
.person.long { align-items: flex-start; }
.avatar {
  flex: none; width: 72px; height: 72px; border-radius: 16px;
  background: var(--pine); color: var(--paper);
  display: grid; place-items: center;
  font: 700 1.3rem/1 var(--font-head);
}
.person h3 { margin: 0 0 2px; }
.person .role {
  font: 600 0.8rem/1.4 var(--font-mono); letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--emerald); margin: 0 0 8px;
}
.person .bio { margin: 0; font-size: 1rem; }
.sub-head { margin-top: 48px; }
.people { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; margin-top: 28px; }

/* --- Contact band (closing surface) ------------------------------------- */
.contact-band .wrap { max-width: 860px; }
.contact-band h2 { margin-bottom: 18px; }
.contact-row { display: flex; flex-wrap: wrap; align-items: center; gap: 22px; margin-top: 30px; }
.contact-row .mail { font: 600 1.05rem var(--font-mono); }

/* --- Page tops and prose ------------------------------------------------ */
.page-top { padding: 72px 0 56px; }
.page-top .lead { max-width: 40em; }
.figure-wide { margin: 36px 0 0; }
.figure-wide svg { display: block; width: 100%; height: auto; }
.shots { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 32px; }
.statement {
  background: var(--paper-2); border-left: 4px solid var(--pine);
  padding: 22px 26px; border-radius: 0 12px 12px 0;
  font: 700 1.25rem/1.4 var(--font-head); color: var(--forest);
  margin: 0 0 28px;
}
.faq { margin-top: 28px; }
.faq details {
  background: var(--white); border: 1px solid var(--rule); border-radius: 12px;
  padding: 0 22px; margin-bottom: 12px;
}
.faq summary {
  cursor: pointer; padding: 18px 0; font: 700 1.08rem/1.4 var(--font-head); color: var(--forest);
}
.faq details p { margin: 0 0 18px; }

/* --- Contact form ------------------------------------------------------- */
.contact-grid { display: grid; grid-template-columns: 1.3fr 1fr; gap: 48px; align-items: start; }
.contact-form { display: grid; gap: 18px; }
.field { display: grid; gap: 6px; }
.field label { font-weight: 700; color: var(--forest); }
.field .opt { font-weight: 400; color: var(--mute); }
.field input, .field select, .field textarea {
  font: inherit; color: var(--ink);
  background: var(--white);
  border: 1px solid rgba(8, 37, 28, 0.28);
  border-radius: 10px; padding: 12px 14px; width: 100%;
}
.field textarea { min-height: 160px; resize: vertical; }
.form-note { font-size: 0.92rem; color: var(--ink); margin: 0; }
.aside-card {
  background: var(--forest); color: var(--paper); border-radius: var(--radius); padding: 28px;
}
.aside-card h2 { color: var(--paper); font-size: 1.4rem; }
.aside-card p { color: var(--paper-lead); }
.aside-card a { color: var(--mint); font: 600 1rem var(--font-mono); }

/* --- Legal -------------------------------------------------------------- */
.legal h1 { font-size: clamp(2rem, 4vw, 2.8rem); }
.legal h2 { font-size: 1.3rem; margin-top: 1.4em; }
.legal address { font-style: normal; margin-bottom: 1em; }

/* --- Footer ------------------------------------------------------------- */
footer {
  background: var(--forest); color: var(--paper-foot);
  border-top: 1px solid var(--rule-dark);
  padding: 36px 0; font-size: 0.92rem;
}
footer .wrap { display: flex; flex-wrap: wrap; gap: 18px 28px; align-items: center; }
footer .foot-brand { display: flex; align-items: center; gap: 12px; color: var(--paper); font-weight: 700; text-decoration: none; }
footer .foot-brand img { width: 32px; height: 32px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 20px; margin-left: auto; }
.footer-links a { color: var(--paper-lead); text-decoration: none; }
.footer-links a:hover { color: var(--mint); }

/* --- Narrow screens ----------------------------------------------------- */
@media (max-width: 900px) {
  .hero-grid, .split, .proof-grid, .contact-grid { grid-template-columns: 1fr; gap: 36px; }
  .cards, .values, .steps, .shots { grid-template-columns: 1fr; }
  .steps li:not(:last-child)::after { display: none; }
  .founders, .people { grid-template-columns: 1fr; }
  section { padding: 64px 0; }
}
/* Not enough room for the wordmark: the square logo alone */
@media (max-width: 760px) {
  .brand .brand-full { display: none; }
  .brand .brand-mark { display: block; }
  .nav-inner { flex-wrap: wrap; gap: 10px 16px; padding: 10px 16px; }
  .nav-links { order: 3; width: 100%; margin-left: 0; gap: 18px; overflow-x: auto; }
  .nav-cta { margin-left: auto; }
  .wrap { padding: 0 16px; }
  body { font-size: 17px; }
  .person { flex-direction: column; align-items: flex-start; }
}