/* ═══════════════════════════════════════════════════════════════
   CEPHYRUS COMPANY — styles.css
   Palette: forest #0F3118 · charcoal #131714 · gray-green #3D453E
            off-white #FAF8F4 · sage #D7E1D5 · copper #B0764A
   Type:    Fraunces (serif display) · Inter (sans UI/body)
   ═══════════════════════════════════════════════════════════════ */

:root {
  --forest: #0F3118;
  --forest-deep: #0A2411;
  --charcoal: #131714;
  --gray-green: #3D453E;
  --off-white: #FAF8F4;
  --sage: #D7E1D5;
  --sage-soft: #EDF1EA;
  --copper: #B0764A;
  --copper-bright: #C98F5E;

  --serif: "Fraunces", Georgia, "Times New Roman", serif;
  --sans: "Inter", -apple-system, "Segoe UI", Helvetica, Arial, sans-serif;

  --container: 1200px;
  --pad: clamp(1.25rem, 4vw, 2.5rem);
  --section-y: clamp(5rem, 12vw, 9rem);

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --hairline-dark: rgba(19, 23, 20, 0.14);
  --hairline-light: rgba(215, 225, 213, 0.22);
}

/* ── Reset ─────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 5.5rem;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: 1.7;
  color: var(--charcoal);
  background: var(--off-white);
  -webkit-font-smoothing: antialiased;
}

img, svg, canvas, iframe { display: block; max-width: 100%; }
ul, ol { list-style: none; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; background: none; border: none; color: inherit; }

:focus-visible {
  outline: 2px solid var(--copper);
  outline-offset: 3px;
  border-radius: 2px;
}

::selection { background: var(--forest); color: var(--sage); }

/* ── Layout primitives ─────────────────────────────────────────── */
.container {
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--pad);
}

.section { padding-block: var(--section-y); }

.section--dark {
  background: var(--forest);
  color: var(--sage);
}
.section--dark ::selection { background: var(--sage); color: var(--forest); }

.section--sage { background: var(--sage-soft); }

.hairline {
  border: none;
  border-top: 1px solid var(--hairline-dark);
  margin-block: clamp(2.5rem, 6vw, 4rem);
}
.hairline--dark { border-top-color: var(--hairline-light); }

/* ── Typography ────────────────────────────────────────────────── */
.eyebrow {
  font-family: var(--sans);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gray-green);
  margin-bottom: 1.25rem;
}
.eyebrow--light { color: var(--copper-bright); }

.section-title {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(2rem, 4.5vw, 3.25rem);
  line-height: 1.15;
  letter-spacing: -0.01em;
  max-width: 20em;
}

.section-head { margin-bottom: clamp(2.5rem, 6vw, 4.5rem); }

/* ── Buttons ───────────────────────────────────────────────────── */
.btn {
  display: inline-block;
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 1rem 2rem;
  border-radius: 2px;
  transition: transform 0.35s var(--ease), background-color 0.35s var(--ease),
              color 0.35s var(--ease), border-color 0.35s var(--ease);
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn--primary {
  background: var(--sage);
  color: var(--forest);
}
.btn--primary:hover { background: #fff; }

.btn--ghost {
  border: 1px solid var(--hairline-light);
  color: var(--sage);
}
.btn--ghost:hover { border-color: var(--sage); background: rgba(215, 225, 213, 0.08); }

.btn--dark {
  background: var(--forest);
  color: var(--sage);
}
.btn--dark:hover { background: var(--charcoal); }

.btn--full { width: 100%; text-align: center; }

/* ── Navigation ────────────────────────────────────────────────── */
.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  transition: background-color 0.4s var(--ease), box-shadow 0.4s var(--ease),
              backdrop-filter 0.4s var(--ease);
  background: transparent;
}

.site-header.is-scrolled {
  background: rgba(10, 36, 17, 0.88);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  box-shadow: 0 1px 0 var(--hairline-light);
}

.nav-inner {
  max-width: var(--container);
  margin-inline: auto;
  padding: 1.15rem var(--pad);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.wordmark {
  font-family: var(--sans);
  font-weight: 600;
  font-size: 1.05rem;
  letter-spacing: 0.02em;
  color: var(--off-white);
  white-space: nowrap;
}
.wordmark span { font-weight: 400; color: var(--sage); opacity: 0.85; }

.site-nav {
  display: flex;
  align-items: center;
  gap: 2.25rem;
}
.site-nav ul {
  display: flex;
  gap: 2rem;
}
.site-nav ul a {
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--sage);
  opacity: 0.85;
  transition: opacity 0.25s;
  position: relative;
  padding-block: 0.35rem;
}
.site-nav ul a::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 100%; height: 1px;
  background: var(--copper-bright);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.35s var(--ease);
}
.site-nav ul a:hover { opacity: 1; }
.site-nav ul a:hover::after { transform: scaleX(1); }

.btn--nav {
  padding: 0.65rem 1.4rem;
  font-size: 0.75rem;
  background: var(--sage);
  color: var(--forest);
  border-radius: 2px;
}
.btn--nav:hover { background: #fff; }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  width: 44px;
  height: 44px;
  align-items: center;
}
.nav-toggle span {
  display: block;
  width: 24px; height: 2px;
  background: var(--sage);
  transition: transform 0.3s var(--ease), opacity 0.3s;
}
.nav-toggle[aria-expanded="true"] span:first-child { transform: translateY(4px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:last-child { transform: translateY(-4px) rotate(-45deg); }

/* ── Hero ──────────────────────────────────────────────────────── */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  background:
    radial-gradient(120% 90% at 75% 15%, #1A4526 0%, transparent 55%),
    radial-gradient(90% 80% at 15% 95%, #0C2A14 0%, transparent 60%),
    var(--forest-deep);
  color: var(--sage);
  overflow: hidden;
}

.hero__canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero__grain {
  position: absolute;
  inset: 0;
  opacity: 0.35;
  pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3CfeColorMatrix values='0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.04 0'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)'/%3E%3C/svg%3E");
}

.hero__content {
  position: relative;
  z-index: 2;
  padding-block: 8rem 6rem;
}

.hero__title {
  font-family: var(--serif);
  font-weight: 340;
  font-size: clamp(2.5rem, 6.2vw, 4.75rem);
  line-height: 1.08;
  letter-spacing: -0.015em;
  color: var(--off-white);
  max-width: 15em;
  margin-bottom: 1.75rem;
}

.hero__sub {
  font-size: clamp(1.0625rem, 1.8vw, 1.25rem);
  color: var(--sage);
  opacity: 0.9;
  max-width: 34em;
  margin-bottom: 2.75rem;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.hero__scroll {
  position: absolute;
  bottom: 2.25rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--sage);
  opacity: 0.65;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  transition: opacity 0.3s;
}
.hero__scroll:hover { opacity: 1; }

.hero__scroll-line {
  width: 1px;
  height: 3rem;
  background: linear-gradient(to bottom, transparent, var(--sage));
  animation: scroll-pulse 2.4s var(--ease) infinite;
}
@keyframes scroll-pulse {
  0%, 100% { transform: scaleY(0.55); opacity: 0.4; }
  50% { transform: scaleY(1); opacity: 1; }
}

/* ── About ─────────────────────────────────────────────────────── */
.about__columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 5vw, 5rem);
}

.about__label {
  font-family: var(--sans);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--copper);
  margin-bottom: 1.25rem;
}

.about__col p { color: var(--gray-green); }

.about__strip {
  margin-top: clamp(3rem, 7vw, 5rem);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--hairline-dark);
}
.about__fact {
  padding: 2rem 2rem 0 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.about__fact + .about__fact { padding-left: 2rem; border-left: 1px solid var(--hairline-dark); }

.about__fact-num {
  font-family: var(--serif);
  font-size: 2rem;
  font-weight: 400;
  color: var(--forest);
  line-height: 1;
}
.about__fact-label {
  font-size: 0.875rem;
  color: var(--gray-green);
  line-height: 1.55;
}

/* ── The Closed Loop ───────────────────────────────────────────── */
.loop__diagram {
  position: relative;
  margin-bottom: clamp(4rem, 9vw, 7rem);
}

.loop__track {
  position: absolute;
  top: 6px;
  left: calc(12.5% );
  right: calc(12.5%);
  height: 1px;
  background: var(--hairline-light);
}
.loop__progress {
  display: block;
  height: 100%;
  width: 0;
  background: var(--copper-bright);
  transition: width 2.4s var(--ease);
}
.loop__diagram.is-active .loop__progress { width: 100%; }

.loop__steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  text-align: center;
}

.loop__step {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}
.loop__diagram.is-active .loop__step { opacity: 1; transform: none; }
.loop__diagram.is-active .loop__step:nth-child(1) { transition-delay: 0.1s; }
.loop__diagram.is-active .loop__step:nth-child(2) { transition-delay: 0.65s; }
.loop__diagram.is-active .loop__step:nth-child(3) { transition-delay: 1.2s; }
.loop__diagram.is-active .loop__step:nth-child(4) { transition-delay: 1.75s; }

.loop__dot {
  display: block;
  width: 13px; height: 13px;
  margin: 0 auto 1.5rem;
  border-radius: 50%;
  border: 1px solid var(--copper-bright);
  background: var(--forest);
  position: relative;
  z-index: 1;
  transition: background-color 0.5s var(--ease), box-shadow 0.5s var(--ease);
}
.loop__diagram.is-active .loop__dot {
  background: var(--copper-bright);
  box-shadow: 0 0 0 5px rgba(201, 143, 94, 0.15);
}

.loop__num {
  display: block;
  font-family: var(--serif);
  font-size: 0.9375rem;
  color: var(--copper-bright);
  margin-bottom: 0.5rem;
}

.loop__step-title {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 1.5rem;
  color: var(--off-white);
  margin-bottom: 0.75rem;
}

.loop__step p {
  font-size: 0.875rem;
  line-height: 1.65;
  opacity: 0.78;
  max-width: 26em;
  margin-inline: auto;
}

.loop__return {
  margin-top: 3rem;
  text-align: center;
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--copper-bright);
  opacity: 0.8;
}

.pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.pillar {
  border: 1px solid var(--hairline-light);
  border-radius: 3px;
  padding: 2.5rem 2rem;
  transition: transform 0.4s var(--ease), border-color 0.4s var(--ease),
              background-color 0.4s var(--ease);
}
.pillar:hover {
  transform: translateY(-6px);
  border-color: rgba(201, 143, 94, 0.45);
  background: rgba(215, 225, 213, 0.04);
}

.pillar__index {
  font-family: var(--serif);
  font-size: 1.125rem;
  color: var(--copper-bright);
  display: block;
  margin-bottom: 1.5rem;
}

.pillar h3 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 1.375rem;
  line-height: 1.3;
  color: var(--off-white);
  margin-bottom: 1rem;
}

.pillar p { font-size: 0.9375rem; opacity: 0.8; }

/* ── Product ───────────────────────────────────────────────────── */
.product__layout {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: clamp(2.5rem, 6vw, 6rem);
  align-items: center;
}

.product__visual {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.75rem;
}

.product__sphere {
  width: min(320px, 70vw);
  aspect-ratio: 1;
  border-radius: 50%;
  background:
    radial-gradient(circle at 32% 28%, #4a3527 0%, #241a12 38%, #131714 72%, #0b0d0b 100%);
  box-shadow:
    inset -18px -24px 60px rgba(0, 0, 0, 0.65),
    inset 14px 18px 44px rgba(201, 143, 94, 0.18),
    0 30px 70px -30px rgba(19, 23, 20, 0.5);
  position: relative;
}
.product__sphere::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 25%, rgba(201, 143, 94, 0.35), transparent 45%);
}

.product__caption {
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gray-green);
}

.spec-table { border-top: 1px solid var(--hairline-dark); margin-bottom: 1.25rem; }

.spec-row {
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  padding: 0.9rem 0;
  border-bottom: 1px solid var(--hairline-dark);
}
.spec-row dt { color: var(--gray-green); font-size: 0.9375rem; }
.spec-row dd {
  font-family: var(--serif);
  font-size: 1.0625rem;
  color: var(--charcoal);
  text-align: right;
}

.spec-note {
  font-size: 0.8125rem;
  color: var(--gray-green);
  margin-bottom: 2rem;
}

.apps__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 2.25rem;
}

.app {
  border: 1px solid var(--hairline-dark);
  border-radius: 3px;
  padding: 2.25rem 2rem;
  background: #fff;
  transition: transform 0.4s var(--ease), box-shadow 0.4s var(--ease);
}
.app:hover {
  transform: translateY(-6px);
  box-shadow: 0 24px 48px -28px rgba(15, 49, 24, 0.35);
}

.app h3 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 1.3125rem;
  margin-bottom: 0.85rem;
  color: var(--forest);
}
.app p { font-size: 0.9375rem; color: var(--gray-green); }

/* ── Markets ───────────────────────────────────────────────────── */
.markets__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.market {
  background: var(--off-white);
  border: 1px solid var(--hairline-dark);
  border-radius: 3px;
  padding: 2.5rem 2rem;
  transition: transform 0.4s var(--ease), box-shadow 0.4s var(--ease);
}
.market:hover {
  transform: translateY(-6px);
  box-shadow: 0 24px 48px -28px rgba(15, 49, 24, 0.3);
}

.market h3 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 1.3125rem;
  line-height: 1.3;
  color: var(--forest);
  margin-bottom: 0.85rem;
}
.market p { font-size: 0.9375rem; color: var(--gray-green); }

.logo-strip {
  margin-top: clamp(3rem, 7vw, 5rem);
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1rem;
}

.logo-slot {
  display: grid;
  place-items: center;
  height: 84px;
  border: 1px dashed var(--hairline-dark);
  border-radius: 3px;
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gray-green);
  opacity: 0.55;
}

/* ── Sustainability ────────────────────────────────────────────── */
.sustain__columns {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(2rem, 5vw, 4rem);
}

.sustain__label {
  font-family: var(--sans);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--copper-bright);
  margin-bottom: 1.1rem;
}

.sustain__columns p { font-size: 0.9375rem; opacity: 0.82; }

.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}

.stat { text-align: left; }

.stat__value {
  display: block;
  font-family: var(--serif);
  font-weight: 340;
  font-size: clamp(2.5rem, 5vw, 3.75rem);
  line-height: 1.05;
  color: var(--off-white);
  margin-bottom: 0.6rem;
  font-variant-numeric: tabular-nums;
}

.stat__label {
  font-size: 0.8125rem;
  letter-spacing: 0.04em;
  opacity: 0.75;
}

.stats__note {
  margin-top: 2.5rem;
  font-size: 0.75rem;
  opacity: 0.5;
}

/* ── Contact ───────────────────────────────────────────────────── */
.contact__split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-bottom: clamp(3rem, 7vw, 5rem);
}

.contact__cta {
  position: relative;
  display: block;
  border: 1px solid var(--hairline-dark);
  border-radius: 3px;
  padding: 2.5rem 2.25rem;
  background: #fff;
  transition: transform 0.4s var(--ease), box-shadow 0.4s var(--ease),
              border-color 0.4s var(--ease);
}
.contact__cta:hover {
  transform: translateY(-6px);
  border-color: var(--copper);
  box-shadow: 0 24px 48px -28px rgba(15, 49, 24, 0.35);
}

.contact__cta .eyebrow { margin-bottom: 0.9rem; color: var(--copper); }

.contact__cta h3 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 1.5rem;
  color: var(--forest);
  margin-bottom: 0.75rem;
}

.contact__cta p:last-of-type { font-size: 0.9375rem; color: var(--gray-green); }

.contact__cta-arrow {
  position: absolute;
  top: 2.25rem;
  right: 2.25rem;
  font-size: 1.25rem;
  color: var(--copper);
  transition: transform 0.35s var(--ease);
}
.contact__cta:hover .contact__cta-arrow { transform: translateX(6px); }

.contact__layout {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: clamp(2.5rem, 6vw, 5rem);
  align-items: start;
}

.contact__line {
  color: var(--gray-green);
  margin-bottom: 1rem;
}
.contact__line a {
  color: var(--forest);
  font-weight: 500;
  border-bottom: 1px solid var(--copper);
  transition: color 0.25s;
}
.contact__line a:hover { color: var(--copper); }

.contact__map {
  margin-top: 2rem;
  border: 1px solid var(--hairline-dark);
  border-radius: 3px;
  overflow: hidden;
  filter: grayscale(0.75) sepia(0.08);
  transition: filter 0.4s var(--ease);
}
.contact__map:hover { filter: none; }

.contact__form { display: flex; flex-direction: column; gap: 1.25rem; }

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.form-field { display: flex; flex-direction: column; gap: 0.45rem; }

.form-field label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gray-green);
}

.form-field input,
.form-field textarea {
  font: inherit;
  font-size: 0.9375rem;
  color: var(--charcoal);
  background: #fff;
  border: 1px solid var(--hairline-dark);
  border-radius: 2px;
  padding: 0.85rem 1rem;
  transition: border-color 0.25s;
  width: 100%;
  resize: vertical;
}
.form-field input:focus,
.form-field textarea:focus {
  outline: none;
  border-color: var(--forest);
}
.form-field input::placeholder { color: rgba(61, 69, 62, 0.5); }

.form-status {
  font-size: 0.875rem;
  color: var(--forest);
  min-height: 1.4em;
}
.form-status.is-error { color: #8a3324; }

/* ── Footer ────────────────────────────────────────────────────── */
.site-footer {
  background: var(--forest-deep);
  color: var(--sage);
  padding-block: clamp(3rem, 7vw, 4.5rem) 2rem;
}

.footer__top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.wordmark--footer { font-size: 1.2rem; }

.footer__nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1.75rem;
}
.footer__nav a {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  opacity: 0.75;
  transition: opacity 0.25s;
}
.footer__nav a:hover { opacity: 1; }

.site-footer .hairline--dark { margin-block: 2rem; }

.footer__bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.8125rem;
  opacity: 0.7;
}
.footer__bottom a { border-bottom: 1px solid rgba(201, 143, 94, 0.5); }
.footer__bottom a:hover { color: var(--copper-bright); }
.footer__sep { margin-inline: 0.6rem; }

/* ── Scroll-reveal ─────────────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.9s var(--ease) var(--d, 0s),
              transform 0.9s var(--ease) var(--d, 0s);
}
.reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* ── Responsive ────────────────────────────────────────────────── */
@media (max-width: 960px) {
  .about__columns,
  .product__layout,
  .contact__layout,
  .contact__split { grid-template-columns: 1fr; }

  .pillars,
  .apps__grid,
  .markets__grid,
  .sustain__columns { grid-template-columns: 1fr 1fr; }

  .stats { grid-template-columns: 1fr 1fr; gap: 2.5rem 2rem; }

  .about__strip { grid-template-columns: 1fr; border-top: none; }
  .about__fact { padding: 1.5rem 0; border-top: 1px solid var(--hairline-dark); }
  .about__fact + .about__fact { padding-left: 0; border-left: none; }

  .logo-strip { grid-template-columns: repeat(3, 1fr); }
  .logo-slot:nth-child(n+4) { display: none; }

  /* Loop diagram → vertical */
  .loop__track { display: none; }
  .loop__steps {
    grid-template-columns: 1fr;
    gap: 2.5rem;
    text-align: left;
    border-left: 1px solid var(--hairline-light);
    padding-left: 2rem;
  }
  .loop__dot { margin: 0 0 1rem; }
  .loop__step p { margin-inline: 0; }
  .loop__return { text-align: left; }
}

@media (max-width: 720px) {
  .pillars,
  .apps__grid,
  .markets__grid,
  .sustain__columns,
  .form-row { grid-template-columns: 1fr; }

  /* Mobile nav */
  .nav-toggle { display: flex; }

  .site-nav {
    position: fixed;
    inset: 0;
    z-index: -1;
    flex-direction: column;
    justify-content: center;
    gap: 3rem;
    background: var(--forest-deep);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.35s var(--ease), visibility 0.35s;
  }
  .site-nav.is-open {
    opacity: 1;
    visibility: visible;
  }
  .site-nav ul {
    flex-direction: column;
    align-items: center;
    gap: 1.75rem;
  }
  .site-nav ul a { font-size: 1rem; }

  .hero__actions .btn { width: 100%; text-align: center; }
  .hero__scroll { display: none; }
}

/* ── Reduced motion ────────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  .reveal,
  .loop__step,
  .loop__progress {
    transition: none !important;
    opacity: 1 !important;
    transform: none !important;
  }
  .loop__diagram .loop__progress { width: 100%; }
  .loop__diagram .loop__dot { background: var(--copper-bright); }

  .hero__scroll-line { animation: none; }
  .hero__canvas { display: none; }

  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}