/* ==========================================================================
   Powered Lithium · styles
   ========================================================================== */

:root {
  --paper: #f3f0e8;
  --white: #fbfaf6;
  --ink: #171c19;
  --muted: #5b655f;
  --green: #183b32;
  --green-deep: #102a23;
  --green2: #285d4b;
  --lime: #c7ed72;
  --line: #d7d7cd;
  --orange: #d88450;

  --mono: "DM Mono", ui-monospace, monospace;
  --sans: "DM Sans", system-ui, sans-serif;
  --display: "Manrope", system-ui, sans-serif;

  --gutter: clamp(20px, 6vw, 112px);
  --ease: cubic-bezier(.2, .7, .2, 1);
  --header-h: 76px;
}

*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 12px);
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 400 16px/1.65 var(--sans);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

[hidden] { display: none !important; }
img { max-width: 100%; display: block; }
a { color: inherit; }
button { font: inherit; color: inherit; }

:focus-visible {
  outline: 2px solid var(--green2);
  outline-offset: 3px;
}

.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.skip-link {
  position: absolute;
  left: 1rem; top: -4rem;
  background: var(--lime);
  padding: .8rem 1rem;
  z-index: 100;
  font-weight: 600;
}
.skip-link:focus { top: 1rem; }

/* ---------- Shared type ---------- */

.eyebrow {
  font: 500 12px/1.5 var(--mono);
  letter-spacing: .14em;
  color: var(--green2);
  margin: 0 0 22px;
}

.eyebrow-dot {
  display: inline-block;
  width: 7px; height: 7px;
  background: #87a943;
  border-radius: 50%;
  margin-right: 10px;
  box-shadow: 0 0 0 4px #e1e9d0;
  vertical-align: 1px;
  animation: pulse 2.4s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 4px #e1e9d0; }
  50% { box-shadow: 0 0 0 8px rgba(225, 233, 208, .35); }
}

h1, h2 {
  font-family: var(--display);
  font-weight: 500;
  letter-spacing: -.06em;
  line-height: 1;
  margin: 0;
  color: var(--ink);
}

h1 { font-size: clamp(54px, 7.2vw, 108px); }
h2 { font-size: clamp(42px, 5.2vw, 72px); }

h1 em, h2 em {
  font-family: Georgia, serif;
  font-weight: 400;
  letter-spacing: -.06em;
  color: var(--green2);
}

/* ---------- Buttons & links ---------- */

.button {
  display: inline-flex;
  gap: 24px;
  align-items: center;
  justify-content: space-between;
  text-decoration: none;
  font-size: 15px;
  font-weight: 600;
  padding: 16px 20px;
  min-width: 210px;
  border: 0;
  border-radius: 3px;
  cursor: pointer;
  transition: transform .25s var(--ease), box-shadow .25s var(--ease), background .25s;
}
.button span { transition: transform .25s var(--ease); }
.button:hover { transform: translateY(-2px); box-shadow: 0 12px 26px -12px rgba(16, 42, 35, .55); }
.button:hover span { transform: translate(2px, 2px); }

.button-dark { background: var(--green); color: #fff; }
.button-dark span { font-size: 18px; color: var(--lime); }
.button-dark:hover { background: var(--green2); }

.button-light { background: var(--lime); color: var(--green); min-width: 0; }
.button-ghost { background: transparent; color: #e8f1e6; border: 1px solid rgba(255, 255, 255, .28); min-width: 0; }
.button-ghost:hover { border-color: var(--lime); color: var(--lime); }

.text-link {
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  padding: 0 0 5px;
  background: linear-gradient(var(--green2), var(--green2)) 0 100% / 0 1px no-repeat,
              linear-gradient(#9ca89f, #9ca89f) 0 100% / 100% 1px no-repeat;
  transition: background-size .35s var(--ease);
}
.text-link:hover { background-size: 100% 1px, 100% 1px; }
.text-link span { color: var(--green2); margin-left: 6px; }

/* ---------- Header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--header-h);
  padding: 0 var(--gutter);
  display: flex;
  align-items: center;
  gap: 32px;
  background: rgba(243, 240, 232, .82);
  backdrop-filter: blur(14px) saturate(1.4);
  -webkit-backdrop-filter: blur(14px) saturate(1.4);
  border-bottom: 1px solid transparent;
  transition: border-color .3s, box-shadow .3s, height .3s var(--ease);
}
.site-header.is-scrolled {
  border-bottom-color: rgba(23, 28, 25, .1);
  box-shadow: 0 10px 30px -24px rgba(16, 42, 35, .6);
}

.scroll-progress {
  position: absolute;
  left: 0; right: 0; bottom: -1px;
  height: 2px;
  pointer-events: none;
}
.scroll-progress span {
  display: block;
  height: 100%;
  width: 100%;
  background: linear-gradient(90deg, var(--green2), #87a943, var(--lime));
  transform-origin: left;
  transform: scaleX(var(--progress, 0));
}

.brand { display: flex; align-items: center; gap: 11px; text-decoration: none; flex: none; }
.brand-mark { display: flex; align-items: flex-end; gap: 3px; height: 26px; }
.brand-mark span { width: 5px; background: var(--green); border-radius: 5px; transition: height .4s var(--ease); }
.brand-mark span:nth-child(1) { height: 13px; }
.brand-mark span:nth-child(2) { height: 22px; }
.brand-mark span:nth-child(3) { height: 17px; }
.brand:hover .brand-mark span:nth-child(1) { height: 22px; }
.brand:hover .brand-mark span:nth-child(2) { height: 14px; }
.brand:hover .brand-mark span:nth-child(3) { height: 25px; }
.brand-name { font: 800 14px/1 var(--display); letter-spacing: .08em; }
.brand-name span { display: block; font-size: 10.5px; letter-spacing: .26em; margin-top: 5px; }

.primary-nav { display: flex; gap: 6px; margin-left: auto; }
.primary-nav a {
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  color: #49534d;
  padding: 8px 12px;
  border-radius: 99px;
  transition: color .2s, background .2s;
}
.primary-nav a:hover { color: var(--green); background: rgba(40, 93, 75, .08); }
.primary-nav a.is-active { color: var(--green); background: rgba(199, 237, 114, .5); }
.nav-cta-mobile { display: none; }

.header-cta {
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  background: var(--green);
  color: #fff;
  padding: 12px 18px;
  border-radius: 3px;
  white-space: nowrap;
  transition: background .2s;
}
.header-cta:hover { background: var(--green2); }
.header-cta span { color: var(--lime); margin-left: 10px; }

.menu-toggle { display: none; border: 0; background: transparent; }

/* ---------- Hero ---------- */

.hero {
  display: grid;
  grid-template-columns: 1fr 1.05fr;
  gap: 4vw;
  padding: 56px var(--gutter) 72px;
  min-height: min(calc(100vh - var(--header-h) - 58px), 820px);
  align-items: stretch;
}

.hero-copy { display: flex; flex-direction: column; justify-content: center; padding: 24px 0; }

.hero-intro {
  font-size: 19px;
  line-height: 1.65;
  color: var(--muted);
  max-width: 480px;
  margin: 28px 0 34px;
}

.hero-actions { display: flex; align-items: center; gap: 28px; flex-wrap: wrap; }

.hero-points {
  list-style: none;
  margin: 52px 0 0;
  padding: 22px 0 0;
  border-top: 1px solid var(--line);
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
  font-size: 14px;
  color: var(--muted);
}
.hero-points span {
  display: block;
  font: 500 28px/1 var(--display);
  letter-spacing: -.05em;
  color: var(--green);
  margin-bottom: 6px;
}

.hero-visual {
  position: relative;
  min-height: 520px;
  background: #8e9a80;
  overflow: hidden;
  border-radius: 4px;
}
.hero-visual > img {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  filter: saturate(.75) contrast(1.03);
  transform: scale(1.08);
  animation: drift 24s ease-in-out infinite alternate;
}
@keyframes drift {
  from { transform: scale(1.08) translate(0, 0); }
  to { transform: scale(1.16) translate(-2%, 1.5%); }
}

.image-shade {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(0deg, rgba(11, 28, 22, .7), transparent 42%),
    linear-gradient(180deg, rgba(11, 28, 22, .35), transparent 22%);
}

.scan-line {
  position: absolute;
  left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(199, 237, 114, .8), transparent);
  box-shadow: 0 0 12px rgba(199, 237, 114, .7);
  animation: scan 7s linear infinite;
}
@keyframes scan {
  from { top: 0; opacity: 0; }
  10% { opacity: 1; }
  90% { opacity: 1; }
  to { top: 100%; opacity: 0; }
}

.visual-label {
  position: absolute;
  top: 20px; left: 22px; right: 22px;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  color: #fff;
  font: 11px var(--mono);
  letter-spacing: .08em;
}

.hero-stamp {
  position: absolute;
  left: 26px; bottom: 56px;
  display: flex;
  align-items: flex-end;
  gap: 10px;
  color: var(--lime);
}
.hero-stamp > span { font: 500 72px/.85 var(--display); letter-spacing: -.08em; }
.hero-stamp small { font: 11px/1.4 var(--mono); letter-spacing: .1em; }

.image-caption {
  position: absolute;
  left: 26px; right: 22px; bottom: 16px;
  margin: 0;
  color: rgba(255, 255, 255, .85);
  font-size: 12px;
}
.image-caption a { color: #e3f6bb; text-decoration: none; }
.image-caption a:hover { text-decoration: underline; }

/* ---------- Ticker ---------- */

.ticker {
  overflow: hidden;
  border-top: 1px solid var(--line);
  background: var(--white);
  padding: 16px 0;
  mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}
.ticker-track {
  display: flex;
  width: max-content;
  animation: ticker 48s linear infinite;
}
.ticker span {
  font: 500 14px var(--mono);
  letter-spacing: .04em;
  color: #48524c;
  white-space: nowrap;
  padding: 0 28px;
  position: relative;
}
.ticker span::after {
  content: "";
  position: absolute;
  right: -3px; top: 50%;
  width: 5px; height: 5px;
  border-radius: 50%;
  background: #a9bf86;
  transform: translateY(-50%);
}
.ticker b { color: var(--green2); font-weight: 500; margin-left: 6px; }
@keyframes ticker { to { transform: translateX(-50%); } }

/* ---------- Signals ---------- */

.signal-band {
  background: var(--green);
  color: #fff;
  padding: 44px var(--gutter);
  display: grid;
  grid-template-columns: .9fr 1fr 1.45fr 1.1fr;
  gap: 36px;
  align-items: center;
}
.signal-intro .eyebrow { color: #b6cf9a; margin-bottom: 10px; display: block; }
.signal-intro > span:last-child { font: 500 26px/1.15 var(--display); letter-spacing: -.04em; }

.signal {
  display: flex;
  align-items: center;
  gap: 18px;
  border-left: 1px solid rgba(255, 255, 255, .18);
  padding-left: 28px;
}
.signal strong {
  font: 500 60px/.9 var(--display);
  letter-spacing: -.07em;
  color: var(--lime);
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}
.signal strong .unit { font-size: 32px; }
.signal p { font-size: 14px; line-height: 1.55; color: #d3ded6; margin: 0; }
.signal sup a { color: var(--lime); text-decoration: none; padding: 0 2px; }
.signal-aside { display: block; }
.signal-aside > span { font: 500 22px/1.2 var(--display); color: var(--lime); letter-spacing: -.03em; }
.signal-aside p { margin-top: 8px; }

/* ---------- Sections ---------- */

.section { padding: 120px var(--gutter); }

.section-heading {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 70px;
  margin-bottom: 48px;
}
.section-lede {
  max-width: 470px;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.7;
  margin: 0 0 6px;
}

/* ---------- Materials ---------- */

.materials-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.catalog-note {
  display: flex;
  align-items: center;
  gap: 12px;
  color: #566158;
  flex: 1 1 420px;
}
.catalog-note p { margin: 0; font-size: 14px; line-height: 1.55; }
.catalog-note strong { color: var(--green); }
.catalog-icon {
  width: 22px; height: 22px;
  border: 1px solid #7d8c7c;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font: 12px Georgia, serif;
  color: var(--green);
  flex: none;
}

.view-toggle {
  display: inline-flex;
  background: #e5e4d9;
  border-radius: 99px;
  padding: 4px;
}
.view-toggle button {
  border: 0;
  background: transparent;
  padding: 9px 18px;
  border-radius: 99px;
  font-size: 14px;
  font-weight: 600;
  color: #5c665f;
  cursor: pointer;
  transition: background .25s, color .25s;
}
.view-toggle button[aria-selected="true"] { background: var(--green); color: #fff; }

.material-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }

.material-card {
  height: 460px;
  position: relative;
  overflow: hidden;
  padding: 22px;
  color: #fff;
  background: #1b3028;
  border-radius: 4px;
  transition: transform .45s var(--ease), box-shadow .45s var(--ease);
}
.material-card:hover { transform: translateY(-6px); box-shadow: 0 28px 50px -28px rgba(16, 42, 35, .8); }
.card-hydroxide { background: #303b37; }
.card-feedstock { background: #4b4234; }
.card-recycled { background: #26443a; }

.card-top { position: relative; z-index: 2; display: flex; justify-content: space-between; align-items: center; gap: 10px; }
.material-index { font: 11px var(--mono); letter-spacing: .08em; color: #d4ded5; }
.atom-mark { font: 14px var(--mono); color: var(--lime); }

.material-orb {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(223, 243, 184, .48);
  opacity: .74;
  transition: transform 1.2s var(--ease), opacity .6s;
}
.material-orb::before, .material-orb::after {
  content: "";
  position: absolute;
  border: 1px solid rgba(223, 243, 184, .45);
  border-radius: 50%;
  inset: 19% -10%;
  transform: rotate(45deg);
}
.material-orb::after { transform: rotate(-45deg); }
.material-card:hover .material-orb { transform: rotate(90deg) scale(1.08); opacity: .95; }
.orb-one { width: 210px; height: 210px; right: -43px; top: 64px; background: radial-gradient(circle at 42% 40%, #95b36d, #4b7153 37%, transparent 69%); box-shadow: 0 0 70px #91ad5a66; }
.orb-two { width: 180px; height: 180px; right: -12px; top: 84px; background: radial-gradient(circle at 45% 43%, #bacb9a, #718777 40%, transparent 68%); }
.orb-three { width: 220px; height: 220px; right: -50px; top: 64px; background: radial-gradient(circle at 42% 38%, #d19a63, #80674c 41%, transparent 68%); border-radius: 42% 58% 70% 30%; }
.orb-four { width: 196px; height: 196px; right: -25px; top: 78px; background: radial-gradient(circle at 42% 38%, #91ab79, #426a54 43%, transparent 68%); }

.material-copy { position: absolute; left: 22px; right: 22px; bottom: 22px; z-index: 2; }
.material-copy h3 { font: 500 30px/1.03 var(--display); letter-spacing: -.05em; margin: 0 0 12px; }
.material-copy p { font-size: 14px; line-height: 1.6; color: #d2dbd3; margin: 0 0 16px; }
.material-fit { display: block; margin: 0 0 10px; color: #c9dfaa; font: 11px var(--mono); letter-spacing: .05em; }
.material-copy a { font: 12px var(--mono); color: var(--lime); text-decoration: none; }
.material-copy a:hover { text-decoration: underline; }

.compare-panel { animation: fadeUp .5s var(--ease); }
.compare-scroll { overflow-x: auto; border: 1px solid var(--line); border-radius: 4px; background: var(--white); }
.compare-table { width: 100%; min-width: 860px; border-collapse: collapse; font-size: 14px; line-height: 1.55; }
.compare-table th, .compare-table td { text-align: left; vertical-align: top; padding: 18px 20px; border-bottom: 1px solid var(--line); }
.compare-table tbody tr:last-child > * { border-bottom: 0; }
.compare-table thead th { background: var(--green); color: #fff; font: 600 16px/1.25 var(--display); letter-spacing: -.02em; }
.compare-table thead th span { display: block; font: 12px var(--mono); color: var(--lime); letter-spacing: 0; margin-bottom: 6px; }
.compare-table thead th:first-child { color: #b6cf9a; font: 500 12px var(--mono); letter-spacing: .1em; vertical-align: bottom; }
.compare-table tbody th { font: 500 12px var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--green2); width: 170px; }
.compare-table td { color: #3f4943; }
.compare-table tbody tr:hover { background: #f1f2e9; }
.compare-note { font: 12px/1.6 var(--mono); color: #6f7a71; margin: 14px 0 0; }

@keyframes fadeUp { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: none; } }

/* ---------- Journey ---------- */

.journey-section { background: #e7e5da; padding: 110px var(--gutter) 56px; }
.journey-heading {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: end;
  column-gap: 12%;
  margin-bottom: 70px;
}
.journey-heading .eyebrow { grid-column: 1 / -1; }
.journey-heading > p:last-child { font-size: 17px; line-height: 1.7; color: var(--muted); max-width: 420px; margin: 0 0 8px; }

.journey-map { position: relative; display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; }
.journey-line { position: absolute; left: 10px; right: 10px; top: 10px; height: 2px; background: #c9cdbf; border-radius: 2px; }
.journey-fill {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, var(--green2), #87a943);
  transform-origin: left;
  transform: scaleX(var(--journey, 0));
  border-radius: 2px;
}

.journey-step { position: relative; }
.step-number {
  font: 500 12px var(--mono);
  color: var(--green2);
  position: relative;
  z-index: 1;
  background: #e7e5da;
  padding-right: 12px;
}
.step-icon {
  height: 88px; width: 88px;
  margin: 26px 0 20px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: #d5dacf;
  border: 1px solid #c3ccbe;
  position: relative;
  transition: transform .45s var(--ease), background .3s;
}
.journey-step:hover .step-icon { transform: translateY(-4px) rotate(-6deg); background: #cfe0b4; }
.icon-rock i { position: absolute; background: #61735b; display: block; border-radius: 40% 55% 33% 40%; width: 26px; height: 21px; transform: rotate(23deg); }
.icon-rock i:nth-child(1) { left: 21px; top: 32px; }
.icon-rock i:nth-child(2) { left: 39px; top: 41px; background: #9b966e; width: 22px; }
.icon-rock i:nth-child(3) { left: 34px; top: 22px; background: #8b997b; width: 17px; height: 18px; }
.icon-refine i { position: absolute; width: 12px; height: 40px; border: 1px solid #617b68; border-radius: 5px; bottom: 22px; }
.icon-refine i::after { content: ""; position: absolute; bottom: 8px; left: 2px; width: 6px; height: 6px; border-radius: 50%; background: #78965e; }
.icon-refine i:nth-child(1) { left: 25px; }
.icon-refine i:nth-child(2) { left: 39px; height: 52px; }
.icon-refine i:nth-child(3) { left: 53px; height: 32px; }
.icon-cell i { position: absolute; width: 16px; height: 42px; border: 1px solid #587a60; border-radius: 4px; transform: rotate(30deg); }
.icon-cell i:nth-child(1) { left: 22px; top: 26px; }
.icon-cell i:nth-child(2) { left: 36px; top: 20px; }
.icon-cell i:nth-child(3) { left: 50px; top: 26px; }
.icon-loop { font: 44px Georgia, serif; color: #4a755c; }
.icon-loop i { font-style: normal; }
.journey-step:hover .icon-loop i { display: inline-block; animation: spin 1s var(--ease); }
@keyframes spin { to { transform: rotate(360deg); } }

.journey-step h3 { font: 600 22px var(--display); letter-spacing: -.03em; margin: 0 0 10px; }
.journey-step p { font-size: 15px; line-height: 1.6; color: #59645c; max-width: 260px; margin: 0 0 16px; }
.step-tag { font: 11px var(--mono); letter-spacing: .1em; color: var(--green2); }

.journey-foot {
  margin-top: 70px;
  border-top: 1px solid #c5c8bc;
  padding-top: 18px;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  font: 12px var(--mono);
  letter-spacing: .06em;
  color: #687269;
}
.journey-foot a { color: var(--green2); text-decoration: none; }
.journey-foot a:hover { text-decoration: underline; }

/* ---------- Responsibility ---------- */

.responsibility-section { display: grid; grid-template-columns: 1fr 1fr; min-height: 720px; background: #f8f7f1; }
.responsibility-image { position: relative; min-height: 640px; overflow: hidden; background: #d2d2c3; }
.responsibility-image img { width: 100%; height: 115%; position: absolute; top: -7.5%; object-fit: cover; filter: saturate(.6); transform: translateY(var(--parallax, 0)); }
.photo-credit {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  background: rgba(18, 34, 27, .85);
  color: #fff;
  padding: 14px 20px;
  font: 10px/1.6 var(--mono);
  letter-spacing: .04em;
}
.photo-credit a { color: var(--lime); text-decoration: none; }

.responsibility-copy { padding: 96px var(--gutter) 80px 7vw; }
.responsibility-lede { font-size: 17px; line-height: 1.7; color: var(--muted); max-width: 470px; margin: 24px 0 34px; }

.choice-list { border-top: 1px solid var(--line); margin-bottom: 30px; }
.choice-list details, .faq-list details { border-bottom: 1px solid var(--line); }
.choice-list summary, .faq-list summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  padding: 18px 0;
  font: 600 18px var(--display);
  letter-spacing: -.02em;
  transition: color .2s;
}
.choice-list summary:hover, .faq-list summary:hover { color: var(--green2); }
.choice-list summary::-webkit-details-marker, .faq-list summary::-webkit-details-marker { display: none; }
.choice-list summary span { font: 12px var(--mono); color: #80907d; width: 46px; flex: none; }
.choice-list summary b, .faq-list summary b {
  margin-left: auto;
  padding-left: 16px;
  font-weight: 400;
  color: var(--green2);
  font-size: 24px;
  line-height: 1;
  transition: transform .35s var(--ease);
}
details[open] > summary b { transform: rotate(45deg); }
.choice-list .details-body p { font-size: 15px; line-height: 1.7; color: var(--muted); margin: 0 0 20px 46px; max-width: 500px; }
.js details .details-body { overflow: hidden; }

/* ---------- Chemistry ---------- */

.chemistry-section {
  padding: 116px var(--gutter) 96px;
  background: #dfe5d7;
  display: grid;
  grid-template-columns: .8fr 1.2fr;
  column-gap: 8%;
  align-items: start;
}
.chemistry-top { position: sticky; top: calc(var(--header-h) + 32px); }
.chemistry-top > p:not(.eyebrow) { font-size: 17px; line-height: 1.7; color: #4f5c53; max-width: 380px; margin: 24px 0; }
.meter-legend { display: flex; gap: 10px; align-items: center; font: 12px/1.5 var(--mono); color: #6b776d; max-width: 360px; }
.meter-legend .seg { flex: none; }

.chemistry-cards { display: grid; gap: 14px; }
.chemistry-cards article {
  padding: 26px 28px;
  background: #f6f6ef;
  border-radius: 4px;
  border: 1px solid transparent;
  transition: border-color .3s, transform .35s var(--ease), box-shadow .35s var(--ease);
}
.chemistry-cards article:hover { border-color: #b9c8a6; transform: translateX(4px); box-shadow: 0 18px 36px -28px rgba(16, 42, 35, .6); }
.chem-head { display: flex; align-items: center; gap: 20px; }
.chem-code { font: 600 36px/1 var(--display); letter-spacing: -.07em; color: var(--green2); width: 76px; flex: none; }
.chem-code.chem-alt { color: #ad7948; }
.chemistry-cards h3 { font: 600 20px var(--display); letter-spacing: -.02em; margin: 0 0 4px; }
.chem-meta { font: 11px var(--mono); letter-spacing: .08em; color: #6f7a6d; }
.chemistry-cards p { font-size: 15px; line-height: 1.65; color: #59625a; margin: 16px 0 18px 96px; }

.meters { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px 28px; margin: 0 0 0 96px; }
.meters > div { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.meters dt { font: 12px var(--mono); color: #5d685f; letter-spacing: .02em; }
.meters dd { margin: 0; display: flex; gap: 3px; }
.seg { display: inline-block; width: 18px; height: 6px; border-radius: 2px; background: #d8ddd0; transition: background .4s var(--ease); }
.seg.on { background: var(--green2); }
.chem-alt-card .seg.on { background: #ad7948; }

.chemistry-source { grid-column: 2; font: 12px var(--mono); color: #66756a; margin-top: 20px; }
.chemistry-source a { color: var(--green2); }

/* ---------- Brief builder ---------- */

.builder-section {
  position: relative;
  overflow: hidden;
  background: var(--green);
  color: #fff;
  padding: 120px var(--gutter);
}
.builder-heading { position: relative; z-index: 2; max-width: 760px; margin-bottom: 56px; }
.builder-heading .eyebrow { color: #b6cf9a; }
.builder-heading h2 { color: #fff; font-size: clamp(46px, 6vw, 82px); }
.builder-heading > p:last-child { font-size: 17px; line-height: 1.7; color: #ced9d0; max-width: 580px; margin: 24px 0 0; }

.contact-orbit {
  position: absolute;
  width: 640px; height: 640px;
  border: 1px solid rgba(198, 237, 114, .12);
  border-radius: 50%;
  right: -160px; top: -120px;
  animation: orbit 60s linear infinite;
}
.contact-orbit::after {
  content: "";
  position: absolute;
  top: 50%; left: -5px;
  width: 9px; height: 9px;
  border-radius: 50%;
  background: var(--lime);
  box-shadow: 0 0 18px var(--lime);
}
.orbit-b { width: 420px; height: 420px; right: -50px; top: -10px; border-color: rgba(198, 237, 114, .1); animation-duration: 38s; animation-direction: reverse; }
@keyframes orbit { to { transform: rotate(360deg); } }

.builder { position: relative; z-index: 2; display: grid; grid-template-columns: 1.15fr .85fr; gap: 28px; align-items: start; }

.builder-form {
  background: rgba(255, 255, 255, .04);
  border: 1px solid rgba(255, 255, 255, .12);
  border-radius: 6px;
  padding: 28px;
}

.builder-progress { display: flex; align-items: center; gap: 16px; margin-bottom: 8px; font: 12px var(--mono); color: #b6cf9a; }
.progress-track { flex: 1; height: 4px; background: rgba(255, 255, 255, .12); border-radius: 4px; overflow: hidden; }
.progress-track span { display: block; height: 100%; width: 0; background: var(--lime); border-radius: 4px; transition: width .5s var(--ease); }

.builder-form fieldset { border: 0; border-top: 1px solid rgba(255, 255, 255, .1); margin: 0; padding: 22px 0 6px; }
.builder-form legend {
  float: left;
  width: 100%;
  font: 600 18px var(--display);
  letter-spacing: -.02em;
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.builder-form legend span {
  font: 500 11px var(--mono);
  width: 30px; height: 30px;
  border-radius: 50%;
  display: inline-grid;
  place-items: center;
  border: 1px solid rgba(199, 237, 114, .45);
  color: var(--lime);
  transition: background .3s, color .3s;
}
.builder-form fieldset.is-done legend span { background: var(--lime); color: var(--green); border-color: var(--lime); }
.builder-form fieldset > * { clear: both; }

.builder-form label { display: block; font-size: 13px; font-weight: 500; color: #c6d3c9; margin-bottom: 14px; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.field-row-3 { grid-template-columns: 1.3fr 1fr 1fr; }

.builder-form input[type="text"],
.builder-form select,
.builder-form textarea {
  display: block;
  width: 100%;
  margin-top: 7px;
  padding: 12px 14px;
  font: 15px var(--sans);
  color: #fff;
  background: rgba(8, 24, 19, .45);
  border: 1px solid rgba(255, 255, 255, .16);
  border-radius: 4px;
  transition: border-color .2s, background .2s;
  color-scheme: dark;
}
.builder-form textarea { resize: vertical; min-height: 64px; }
.builder-form input::placeholder, .builder-form textarea::placeholder { color: #7f978a; }
.builder-form input:focus, .builder-form select:focus, .builder-form textarea:focus {
  outline: none;
  border-color: var(--lime);
  background: rgba(8, 24, 19, .7);
}
.builder-form select option { background: var(--green-deep); }

.chip-group { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 14px; }
.builder-form .chip { margin: 0; cursor: pointer; }
.chip input { position: absolute; opacity: 0; pointer-events: none; }
.chip span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 14px;
  border: 1px solid rgba(255, 255, 255, .2);
  border-radius: 99px;
  font-size: 14px;
  color: #dbe5dd;
  transition: background .2s, border-color .2s, color .2s;
}
.chip span::before { content: "+"; color: var(--lime); font-family: var(--mono); }
.chip:hover span { border-color: rgba(199, 237, 114, .6); }
.chip input:checked + span { background: var(--lime); color: var(--green); border-color: var(--lime); }
.chip input:checked + span::before { content: "✓"; color: var(--green); }
.chip input:focus-visible + span { outline: 2px solid var(--lime); outline-offset: 2px; }

.brief-preview {
  position: sticky;
  top: calc(var(--header-h) + 24px);
  background: #f6f5ee;
  color: var(--ink);
  border-radius: 6px;
  overflow: hidden;
  box-shadow: 0 40px 80px -40px rgba(0, 0, 0, .6);
}
.preview-bar { display: flex; align-items: center; gap: 14px; padding: 12px 16px; background: #e6e5da; font: 12px var(--mono); color: #5d675f; }
.preview-dots { display: flex; gap: 6px; }
.preview-dots i { width: 10px; height: 10px; border-radius: 50%; background: #c6c7bb; }
.preview-dots i:first-child { background: #d88450; }
.preview-dots i:nth-child(2) { background: #e2c25a; }
.preview-dots i:last-child { background: #87a943; }
.brief-preview pre {
  margin: 0;
  padding: 22px 22px 10px;
  font: 13px/1.7 var(--mono);
  color: #2f3832;
  white-space: pre-wrap;
  word-break: break-word;
  max-height: 460px;
  overflow: auto;
}
.brief-preview pre .missing { color: #a3aaa1; }
.brief-preview pre .head { color: var(--green2); font-weight: 500; }
.preview-actions { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; padding: 16px 22px; border-top: 1px solid var(--line); }
.preview-actions .button { padding: 12px 16px; font-size: 14px; gap: 14px; }
.preview-actions .button-ghost { color: var(--green); border-color: #b9c0b4; }
.preview-actions .button-ghost:hover { color: var(--green2); border-color: var(--green2); }
.reset-link { margin-left: auto; border: 0; background: none; font: 13px var(--mono); color: #7a847b; cursor: pointer; text-decoration: underline; text-underline-offset: 3px; }
.reset-link:hover { color: var(--orange); }
.preview-foot { margin: 0; padding: 0 22px 18px; font: 11px/1.55 var(--mono); color: #7a847b; }

.toast {
  position: fixed;
  left: 50%; bottom: 28px;
  z-index: 80;
  transform: translate(-50%, 20px);
  opacity: 0;
  pointer-events: none;
  background: var(--ink);
  color: #fff;
  padding: 12px 18px;
  border-radius: 99px;
  font-size: 14px;
  transition: opacity .3s, transform .3s var(--ease);
}
.toast.is-visible { opacity: 1; transform: translate(-50%, 0); }
.toast::before { content: "✓ "; color: var(--lime); }

/* ---------- FAQ ---------- */

.faq-section {
  padding: 116px var(--gutter);
  background: var(--paper);
  display: grid;
  grid-template-columns: .8fr 1.2fr;
  gap: 8%;
  align-items: start;
}
.faq-heading > p:last-child { font-size: 17px; line-height: 1.7; color: var(--muted); max-width: 380px; margin: 24px 0 0; }
.faq-list { border-top: 1px solid var(--line); }
.faq-list summary { font-size: 20px; padding: 24px 0; }
.faq-list .details-body p { font-size: 16px; line-height: 1.7; color: var(--muted); margin: 0 0 24px; max-width: 620px; }

/* ---------- Research ---------- */

.research-section { padding: 110px var(--gutter); background: var(--white); }
.research-header { display: flex; justify-content: space-between; align-items: flex-end; gap: 40px; margin-bottom: 46px; }
.research-header > p { font-size: 17px; line-height: 1.7; color: var(--muted); max-width: 420px; margin: 0 0 4px; }

.source-list { border-top: 1px solid var(--line); }
.source-row {
  display: grid;
  grid-template-columns: 52px 1.3fr 1fr 130px 28px;
  gap: 16px;
  align-items: center;
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  padding: 22px 8px;
  transition: padding .3s var(--ease), background .3s;
}
.source-row:hover, .source-row:target { padding-left: 20px; background: #f1f2e9; }
.source-number { font: 12px var(--mono); color: #818a81; }
.source-name { font: 600 17px/1.35 var(--display); letter-spacing: -.01em; }
.source-detail { font-size: 14px; color: var(--muted); }
.source-tag { font: 11px var(--mono); letter-spacing: .08em; color: var(--green2); justify-self: start; border: 1px solid #c9d3c0; padding: 4px 8px; border-radius: 99px; }
.source-arrow { color: var(--green2); font-size: 20px; transition: transform .3s var(--ease); }
.source-row:hover .source-arrow { transform: translate(3px, -3px); }

/* ---------- CTA band ---------- */

.cta-band {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 48px;
  padding: 80px var(--gutter);
  background: #e7e5da;
}
.cta-symbol { font: 500 140px/.8 var(--display); letter-spacing: -.05em; color: var(--green); display: block; }
.cta-copy h2 { font-size: clamp(32px, 3.6vw, 52px); }
.cta-copy p { font-size: 17px; color: var(--muted); margin: 14px 0 0; }

/* ---------- Footer ---------- */

.site-footer { padding: 64px var(--gutter) 28px; background: var(--green-deep); color: #d5ded7; }
.footer-main { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 40px; padding-bottom: 48px; }
.footer-brand .brand-mark span { background: var(--lime); }
.footer-brand .brand-name { color: #fff; }
.footer-about p { font-size: 15px; color: #a8b8ac; max-width: 280px; margin: 18px 0 0; }
.footer-col { display: flex; flex-direction: column; gap: 10px; }
.footer-col h3 { font: 500 12px var(--mono); letter-spacing: .12em; text-transform: uppercase; color: #8fa495; margin: 0 0 6px; }
.footer-col a { font-size: 15px; text-decoration: none; color: #d5ded7; width: fit-content; transition: color .2s; }
.footer-col a:hover { color: var(--lime); }
.site-footer small { display: block; border-top: 1px solid rgba(255, 255, 255, .1); padding-top: 20px; font: 12px var(--mono); color: #8a998e; }

.back-to-top {
  position: fixed;
  right: 24px; bottom: 24px;
  z-index: 40;
  width: 48px; height: 48px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--green);
  color: var(--lime);
  text-decoration: none;
  font-size: 18px;
  border: 1px solid rgba(199, 237, 114, .55);
  box-shadow: 0 12px 28px -12px rgba(0, 0, 0, .7);
  opacity: 0;
  transform: translateY(16px);
  pointer-events: none;
  transition: opacity .3s, transform .3s var(--ease), background .2s;
}
.back-to-top.is-visible { opacity: 1; transform: none; pointer-events: auto; }
.back-to-top:hover { background: var(--green2); }

/* ---------- Reveal on scroll ---------- */

.js .reveal { opacity: 0; transform: translateY(28px); transition: opacity .8s var(--ease), transform .8s var(--ease); transition-delay: var(--delay, 0s); }
.js .reveal.is-visible { opacity: 1; transform: none; }
.js .material-card.reveal.is-visible:hover { transform: translateY(-6px); }
.js .chemistry-cards article.reveal.is-visible:hover { transform: translateX(4px); }

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 1180px) {
  .primary-nav a { padding: 8px 9px; font-size: 13.5px; }
  .material-grid { grid-template-columns: repeat(2, 1fr); }
  .material-card { height: 420px; }
  .signal-band { grid-template-columns: 1fr 1fr; gap: 32px 40px; }
  .signal-intro { grid-column: 1 / -1; }
  .signal-aside { grid-column: 1 / -1; border-left: 0; padding-left: 0; }
  .builder { grid-template-columns: 1fr; }
  .brief-preview { position: relative; top: 0; }
}

@media (max-width: 960px) {
  :root { --header-h: 66px; }
  .header-cta { display: none; }
  .menu-toggle {
    display: flex;
    flex-direction: column;
    gap: 6px;
    padding: 12px;
    margin-left: auto;
    margin-right: -12px;
    cursor: pointer;
  }
  .menu-toggle span { width: 22px; height: 1.5px; background: var(--green); transition: transform .3s var(--ease); }
  .menu-toggle[aria-expanded="true"] span:first-child { transform: translateY(3.75px) rotate(45deg); }
  .menu-toggle[aria-expanded="true"] span:last-child { transform: translateY(-3.75px) rotate(-45deg); }
  .primary-nav {
    position: absolute;
    top: var(--header-h); left: 0; right: 0;
    flex-direction: column;
    gap: 2px;
    margin: 0;
    padding: 16px var(--gutter) 24px;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
    box-shadow: 0 24px 40px -30px rgba(16, 42, 35, .6);
    opacity: 0;
    transform: translateY(-8px);
    pointer-events: none;
    visibility: hidden;
    transition: opacity .25s, transform .25s var(--ease), visibility .25s;
  }
  .primary-nav.is-open { opacity: 1; transform: none; pointer-events: auto; visibility: visible; }
  .primary-nav a { font-size: 18px; padding: 12px 8px; border-radius: 4px; }
  .primary-nav .nav-cta-mobile { display: block; margin-top: 10px; background: var(--green); color: #fff; text-align: center; font-weight: 600; }

  .hero { grid-template-columns: 1fr; min-height: 0; max-height: none; padding-top: 40px; gap: 36px; }
  .hero-visual { min-height: 420px; }
  .section-heading { flex-direction: column; align-items: flex-start; gap: 22px; }
  .journey-heading { grid-template-columns: 1fr; }
  .journey-heading > p:last-child { margin-top: 22px; }
  .journey-map { grid-template-columns: 1fr 1fr; gap: 40px 28px; }
  .journey-line { display: none; }
  .responsibility-section { grid-template-columns: 1fr; }
  .responsibility-image { min-height: 380px; }
  .responsibility-copy { padding: 72px var(--gutter); }
  .chemistry-section, .faq-section { grid-template-columns: 1fr; }
  .chemistry-top { position: static; margin-bottom: 36px; }
  .chemistry-source { grid-column: 1; }
  .faq-heading { margin-bottom: 36px; }
  .research-header { flex-direction: column; align-items: flex-start; gap: 20px; }
  .source-row { grid-template-columns: 40px 1fr auto 24px; }
  .source-detail { grid-column: 2; grid-row: 2; }
  .source-tag { grid-column: 3; grid-row: 1 / 3; }
  .source-arrow { grid-column: 4; grid-row: 1 / 3; }
  .cta-band { grid-template-columns: 1fr; gap: 24px; }
  .cta-symbol { font-size: 96px; }
  .footer-main { grid-template-columns: 1fr 1fr; }
  .footer-about { grid-column: 1 / -1; }
}

@media (max-width: 640px) {
  body { font-size: 15px; }
  h1 { font-size: clamp(50px, 15vw, 72px); }
  h2 { font-size: clamp(38px, 11vw, 52px); }
  .section, .journey-section, .chemistry-section, .research-section, .builder-section, .faq-section { padding-top: 80px; padding-bottom: 80px; }
  .hero { padding-top: 32px; padding-bottom: 48px; }
  .hero-intro { font-size: 17px; }
  .hero-points { gap: 22px; }
  .hero-points span { font-size: 24px; }
  .hero-visual { min-height: 340px; }
  .hero-stamp > span { font-size: 54px; }
  .visual-label { font-size: 9.5px; flex-direction: column; gap: 4px; }
  .signal-band { grid-template-columns: 1fr; gap: 26px; padding-top: 40px; padding-bottom: 40px; }
  .signal { padding-left: 18px; }
  .signal strong { font-size: 48px; }
  .material-grid { grid-template-columns: 1fr; }
  .material-card { height: 400px; }
  .view-toggle { width: 100%; }
  .view-toggle button { flex: 1; padding: 10px 8px; }
  .journey-map { grid-template-columns: 1fr; }
  .journey-step { display: grid; grid-template-columns: 76px 1fr; column-gap: 18px; }
  .journey-step .step-number { grid-column: 1 / -1; }
  .journey-step .step-icon { width: 68px; height: 68px; margin: 10px 0 0; grid-row: 2 / 5; transform: scale(.78); transform-origin: top left; }
  .journey-step h3 { margin-top: 12px; }
  .journey-foot { flex-direction: column; margin-top: 48px; }
  .chemistry-cards article { padding: 22px 20px; }
  .chem-code { width: auto; font-size: 30px; }
  .chemistry-cards p, .meters { margin-left: 0; }
  .meters { grid-template-columns: 1fr; }
  .builder-form { padding: 20px 18px; }
  .field-row, .field-row-3 { grid-template-columns: 1fr; gap: 0; }
  .preview-actions .button { flex: 1 1 140px; justify-content: center; white-space: nowrap; }
  .reset-link { margin: 4px auto 0; }
  .faq-list summary { font-size: 17px; }
  .source-row { grid-template-columns: 30px 1fr 22px; gap: 4px 12px; padding: 18px 4px; }
  .source-name { font-size: 15px; }
  .source-tag { display: none; }
  .source-arrow { grid-column: 3; }
  .footer-main { grid-template-columns: 1fr; gap: 30px; }
  .back-to-top { right: 16px; bottom: 16px; }
  .contact-orbit { right: -380px; }
  .orbit-b { right: -260px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation: none !important;
    scroll-behavior: auto !important;
    transition: none !important;
  }
  .js .reveal { opacity: 1; transform: none; }
}

/* ==========================================================================
   Benefits section
   ========================================================================== */

.benefits-section { background: var(--white); }

.property-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  margin-bottom: 40px;
}
.property-strip > div { display: flex; flex-direction: column; gap: 8px; padding: 26px 28px 26px 0; }
.property-strip > div + div { padding-left: 28px; border-left: 1px solid var(--line); }
.property-strip strong { font: 500 38px/1 var(--display); letter-spacing: -.05em; color: var(--green2); }
.property-strip span { font-size: 15px; line-height: 1.55; color: var(--muted); max-width: 320px; }

.benefit-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.benefit-card {
  position: relative;
  padding: 30px 28px 32px;
  background: var(--paper);
  border: 1px solid #e3e1d6;
  border-radius: 4px;
  overflow: hidden;
  transition: transform .4s var(--ease), box-shadow .4s var(--ease), border-color .3s;
}
.benefit-card::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--green2), var(--lime));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .5s var(--ease);
}
.benefit-card:hover { border-color: #cbd5bd; box-shadow: 0 26px 46px -30px rgba(16, 42, 35, .55); }
.js .benefit-card.reveal.is-visible:hover, .benefit-card:hover { transform: translateY(-5px); }
.benefit-card:hover::after { transform: scaleX(1); }

.benefit-icon {
  width: 58px; height: 58px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--green);
  margin-bottom: 26px;
  transition: transform .5s var(--ease), background .3s;
}
.benefit-icon svg { width: 30px; height: 30px; fill: none; stroke: var(--lime); stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.benefit-card:hover .benefit-icon { transform: rotate(-8deg) scale(1.06); background: var(--green2); }

.benefit-tag { font: 500 11px var(--mono); letter-spacing: .12em; color: var(--green2); }
.benefit-card h3 { font: 600 24px/1.15 var(--display); letter-spacing: -.035em; margin: 8px 0 14px; }
.benefit-card p { font-size: 15px; line-height: 1.65; color: #4f5a53; margin: 0; }
.benefit-card .benefit-problem { font-size: 14px; color: #6b746d; padding-bottom: 14px; margin-bottom: 14px; border-bottom: 1px solid #e0ded3; }
.benefit-problem b { color: var(--ink); font-weight: 600; }

.benefits-foot { font: 12px/1.6 var(--mono); color: #6f7a71; margin: 22px 0 0; }
.benefits-foot a { color: var(--green2); }

/* ==========================================================================
   About page
   ========================================================================== */

.page-hero {
  display: grid;
  grid-template-columns: 1.25fr .75fr;
  gap: 6vw;
  align-items: end;
  padding: 90px var(--gutter) 96px;
}
.page-hero .hero-intro { margin-bottom: 0; }
.page-hero-card {
  position: relative;
  aspect-ratio: 4 / 5;
  max-height: 460px;
  background: var(--green);
  border-radius: 4px;
  overflow: hidden;
  color: var(--lime);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 24px;
}
.page-hero-card .contact-orbit { width: 380px; height: 380px; right: -150px; top: -60px; }
.page-hero-card .orbit-b { width: 240px; height: 240px; right: -70px; top: 10px; }
.page-hero-card > span { font: 11px var(--mono); letter-spacing: .12em; color: #b6cf9a; position: relative; }
.page-hero-card strong { font: 500 150px/.8 var(--display); letter-spacing: -.06em; position: relative; }
.page-hero-card small { font: 11px/1.5 var(--mono); letter-spacing: .1em; color: #b6cf9a; position: relative; }

.mission-section { display: grid; grid-template-columns: .9fr 1.1fr; gap: 8%; background: var(--white); }
.mission-copy p { font-size: 18px; line-height: 1.7; color: #3f4943; margin: 0 0 22px; }
.mission-copy p:first-child { font: 500 26px/1.45 var(--display); letter-spacing: -.02em; color: var(--ink); }

.principles-section { background: #e7e5da; }
.principle-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.principle {
  padding: 28px 24px 30px;
  background: #f6f5ee;
  border-radius: 4px;
  transition: transform .4s var(--ease), box-shadow .4s var(--ease);
}
.js .principle.reveal.is-visible:hover, .principle:hover { transform: translateY(-5px); box-shadow: 0 24px 40px -28px rgba(16, 42, 35, .55); }
.principle > span { font: 500 12px var(--mono); color: var(--green2); }
.principle h3 { font: 600 22px/1.2 var(--display); letter-spacing: -.03em; margin: 40px 0 12px; }
.principle p { font-size: 15px; line-height: 1.65; color: #59625a; margin: 0; }

.offer-list { border-top: 1px solid var(--line); }
.offer-row {
  display: grid;
  grid-template-columns: 60px 1fr 1.2fr 30px;
  gap: 20px;
  align-items: center;
  padding: 28px 8px;
  border-bottom: 1px solid var(--line);
  text-decoration: none;
  transition: padding .3s var(--ease), background .3s;
}
.offer-row:hover { padding-left: 20px; background: #f1f2e9; }
.offer-num { font: 12px var(--mono); color: #818a81; }
.offer-row h3 { font: 600 24px var(--display); letter-spacing: -.03em; margin: 0; }
.offer-row p { font-size: 15px; line-height: 1.6; color: var(--muted); margin: 0; }
.offer-arrow { font-size: 22px; color: var(--green2); transition: transform .3s var(--ease); }
.offer-row:hover .offer-arrow { transform: translateX(4px); }

.story-section { background: var(--paper); display: grid; grid-template-columns: .8fr 1.2fr; gap: 8%; align-items: center; }
.story-portrait {
  aspect-ratio: 1;
  border-radius: 4px;
  background: radial-gradient(circle at 40% 35%, #95b36d, #4b7153 45%, var(--green) 75%);
  display: grid;
  place-items: center;
  color: var(--lime);
  font: 500 14px/1.6 var(--mono);
  letter-spacing: .1em;
  text-align: center;
  padding: 20px;
}
.story-copy blockquote { margin: 18px 0 26px; font: 500 clamp(26px, 2.6vw, 36px)/1.3 var(--display); letter-spacing: -.03em; }
.story-copy p { font-size: 17px; line-height: 1.7; color: var(--muted); margin: 0 0 18px; }
.story-copy .eyebrow { font: 500 12px/1.5 var(--mono); color: var(--green2); margin: 0 0 22px; }
.story-sign { display: block; margin-top: 8px; font: 13px var(--mono); letter-spacing: .06em; color: var(--green2); }
.story-copy .placeholder-note { font: 12px/1.6 var(--mono); color: #7a847b; margin: 24px 0 0; }
.placeholder { background: rgba(199, 237, 114, .55); color: var(--green); padding: 0 6px; border-radius: 3px; }
.placeholder-note { font: 12px/1.6 var(--mono); color: #7a847b; margin-top: 24px; }

.primary-nav a[aria-current="page"] { color: var(--green); background: rgba(199, 237, 114, .5); }

@media (max-width: 1100px) and (min-width: 961px) {
  .header-cta { display: none; }
}

@media (max-width: 1180px) {
  .benefit-grid, .principle-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 960px) {
  .property-strip { grid-template-columns: 1fr; }
  .property-strip > div, .property-strip > div + div { padding: 20px 0; border-left: 0; }
  .property-strip > div + div { border-top: 1px solid var(--line); }
  .page-hero, .mission-section, .story-section { grid-template-columns: 1fr; }
  .page-hero { padding-top: 56px; padding-bottom: 72px; }
  .page-hero-card { aspect-ratio: auto; height: 300px; }
  .mission-section h2 { margin-bottom: 32px; }
  .story-portrait { max-width: 320px; }
  .story-section { gap: 40px; }
  .offer-row { grid-template-columns: 40px 1fr 24px; }
  .offer-row p { grid-column: 2; }
  .offer-arrow { grid-column: 3; grid-row: 1 / 3; }
}

@media (max-width: 640px) {
  .benefit-grid, .principle-grid { grid-template-columns: 1fr; }
  .benefit-card { padding: 26px 22px; }
  .property-strip strong { font-size: 32px; }
  .mission-copy p:first-child { font-size: 22px; }
  .mission-copy p { font-size: 17px; }
  .principle h3 { margin-top: 24px; }
  .page-hero-card strong { font-size: 110px; }
  .offer-row h3 { font-size: 20px; }
}

/* ---------- About me ---------- */

.me-hero { align-items: center; }
.fact-list { list-style: none; margin: 40px 0 0; padding: 0; display: grid; grid-template-columns: repeat(2, 1fr); border-top: 1px solid var(--line); max-width: 560px; }
.fact-list li { padding: 16px 16px 16px 0; border-bottom: 1px solid var(--line); display: flex; flex-direction: column; gap: 4px; }
.fact-list li:nth-child(even) { padding-left: 16px; border-left: 1px solid var(--line); }
.fact-list li > span { font: 500 11px var(--mono); letter-spacing: .12em; color: #7d877f; }
.fact-list strong { font: 600 16px/1.35 var(--display); letter-spacing: -.01em; }

.me-portrait { margin: 0; position: relative; }
.me-photo, .me-portrait img {
  width: 100%;
  aspect-ratio: 4 / 5;
  max-height: 560px;
  object-fit: cover;
  border-radius: 4px;
  background: radial-gradient(circle at 40% 32%, #95b36d, #4b7153 42%, var(--green) 75%);
  display: grid;
  place-items: center;
  color: var(--lime);
  font: 500 14px/1.6 var(--mono);
  letter-spacing: .12em;
  text-align: center;
}
.me-portrait figcaption {
  position: absolute;
  left: -28px; bottom: 32px;
  display: flex; align-items: center; gap: 14px;
  background: var(--paper);
  padding: 14px 20px 14px 16px;
  border-radius: 4px;
  box-shadow: 0 24px 40px -24px rgba(16, 42, 35, .55);
}
.me-portrait figcaption strong { font: 500 44px/.9 var(--display); letter-spacing: -.05em; color: var(--green); }
.me-portrait figcaption span { font: 10px/1.6 var(--mono); letter-spacing: .1em; color: var(--muted); }

.me-quote { background: var(--green); color: #fff; padding: 100px var(--gutter); text-align: center; }
.me-quote blockquote { margin: 0 auto 26px; max-width: 900px; font: 500 clamp(28px, 3.4vw, 46px)/1.25 var(--display); letter-spacing: -.035em; }
.me-quote .story-sign { color: #b6cf9a; }
.me-quote .placeholder { background: rgba(199, 237, 114, .16); color: #e9f5d2; }

@media (max-width: 960px) {
  .me-portrait { max-width: 440px; }
  .me-portrait figcaption { left: 16px; }
}
@media (max-width: 640px) {
  .fact-list { grid-template-columns: 1fr; }
  .fact-list li:nth-child(even) { padding-left: 0; border-left: 0; }
  .me-quote { padding: 72px var(--gutter); }
}

/* ---------- Contact ---------- */

.contact-block { position: relative; overflow: hidden; background: var(--green); color: #fff; padding: 110px var(--gutter); }
.contact-head { position: relative; z-index: 2; max-width: 640px; margin-bottom: 48px; }
.contact-head .eyebrow { color: #b6cf9a; }
.contact-head h2 { color: #fff; }
.contact-head > p:last-child { font-size: 17px; line-height: 1.7; color: #ced9d0; margin: 22px 0 0; }

.contact-grid { position: relative; z-index: 2; display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 14px; }
.contact-card {
  display: flex;
  flex-direction: column;
  gap: 14px;
  min-height: 210px;
  padding: 26px 24px;
  border: 1px solid rgba(255, 255, 255, .14);
  border-radius: 4px;
  background: rgba(255, 255, 255, .04);
  text-decoration: none;
  transition: background .3s, border-color .3s, transform .4s var(--ease);
}
.contact-card:hover { background: rgba(199, 237, 114, .1); border-color: rgba(199, 237, 114, .5); }
.js .contact-card.reveal.is-visible:hover, .contact-card:hover { transform: translateY(-4px); }
.contact-label { font: 500 11px var(--mono); letter-spacing: .12em; color: #b6cf9a; }
.contact-card strong { font: 500 24px/1.3 var(--display); letter-spacing: -.02em; color: #fff; }
.contact-card-wide strong { font-size: 20px; }
.contact-action { margin-top: auto; font: 13px var(--mono); color: var(--lime); }

.me-initials { font: 500 96px/1 var(--display); letter-spacing: -.04em; color: var(--lime); opacity: .9; }

.footer-main { grid-template-columns: 1.4fr repeat(4, 1fr); }
.footer-contact .tag { font: 10px var(--mono); color: #8fa495; margin-left: 4px; }
.footer-contact p { font-size: 14px; line-height: 1.6; color: #a8b8ac; margin: 6px 0 0; }

@media (max-width: 1180px) {
  .contact-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 960px) {
  .footer-main { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .contact-grid { grid-template-columns: 1fr; }
  .contact-card { min-height: 0; }
  .contact-block { padding: 80px var(--gutter); }
  .footer-main { grid-template-columns: 1fr; }
}

/* ---------- Gallery ---------- */

.gallery-section { background: var(--paper); }

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-template-rows: 250px 250px 320px;
  grid-template-areas:
    "mine mine spod brine"
    "mine mine spod cells"
    "ev   ev   grid grid";
  gap: 14px;
}
.g-mine { grid-area: mine; }
.g-spod { grid-area: spod; }
.g-brine { grid-area: brine; }
.g-cells { grid-area: cells; }
.g-ev { grid-area: ev; }
.g-grid { grid-area: grid; }

.gallery-item { margin: 0; position: relative; border-radius: 4px; overflow: hidden; background: var(--green); }
.gallery-item button { all: unset; display: block; width: 100%; height: 100%; cursor: zoom-in; position: relative; }
.gallery-item button:focus-visible { outline: 3px solid var(--lime); outline-offset: -3px; }
.gallery-item img { width: 100%; height: 100%; object-fit: cover; transition: transform 1.1s var(--ease), filter .6s; filter: saturate(.9); }
.g-spod img { object-position: center 30%; }
.gallery-item:hover img { transform: scale(1.06); filter: saturate(1.05); }
.gallery-item .gallery-cap {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: 50px 20px 18px;
  background: linear-gradient(0deg, rgba(11, 28, 22, .85), transparent);
  color: #fff;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.gallery-item .gallery-cap span { font: 500 11px var(--mono); letter-spacing: .12em; color: var(--lime); }
.gallery-item .gallery-cap strong { font: 600 19px/1.25 var(--display); letter-spacing: -.02em; }
.gallery-item button::after {
  content: "+";
  position: absolute;
  top: 14px; right: 14px;
  width: 34px; height: 34px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: rgba(243, 240, 232, .9);
  color: var(--green);
  font-size: 20px;
  opacity: 0;
  transform: scale(.8);
  transition: opacity .3s, transform .3s var(--ease);
}
.gallery-item:hover button::after, .gallery-item button:focus-visible::after { opacity: 1; transform: none; }

.photo-credits { margin-top: 22px; font-size: 14px; color: var(--muted); }
.photo-credits summary { cursor: pointer; font: 500 12px var(--mono); letter-spacing: .08em; color: var(--green2); width: fit-content; }
.photo-credits ul { margin: 14px 0 8px; padding-left: 18px; line-height: 1.8; }
.photo-credits a { color: var(--green2); }
.photo-credits p { font: 12px var(--mono); margin: 0; color: #7a847b; }

.lightbox {
  width: min(1180px, 94vw);
  max-height: 92vh;
  padding: 0;
  border: 0;
  border-radius: 6px;
  background: var(--green-deep);
  color: #fff;
  overflow: hidden;
}
.lightbox::backdrop { background: rgba(8, 18, 14, .82); backdrop-filter: blur(4px); }
.lightbox[open] { animation: fadeUp .35s var(--ease); }
.lightbox figure { margin: 0; display: grid; grid-template-columns: 1fr 340px; max-height: 92vh; }
.lightbox img { width: 100%; height: 100%; max-height: 92vh; object-fit: contain; background: #0b1a15; }
.lightbox figcaption { padding: 64px 30px 30px; display: flex; flex-direction: column; gap: 12px; overflow: auto; }
.lightbox-count { font: 500 11px var(--mono); letter-spacing: .12em; color: var(--lime); }
.lightbox h3 { font: 600 26px/1.2 var(--display); letter-spacing: -.03em; margin: 0; }
.lightbox-text { font-size: 16px; line-height: 1.7; color: #ced9d0; margin: 0; }
.lightbox-credit { margin-top: auto; font: 12px/1.5 var(--mono); color: #9fb3a4; }
.lightbox-credit:hover { color: var(--lime); }
.lightbox-close, .lightbox-nav {
  position: absolute;
  z-index: 2;
  width: 42px; height: 42px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, .2);
  background: rgba(16, 42, 35, .85);
  color: #fff;
  font-size: 20px;
  cursor: pointer;
  transition: background .2s, border-color .2s;
}
.lightbox-close:hover, .lightbox-nav:hover { background: var(--green2); border-color: var(--lime); }
.lightbox-close { top: 14px; right: 14px; }
.lightbox-nav { top: 50%; transform: translateY(-50%); }
.lightbox-prev { left: 14px; }
.lightbox-next { right: 354px; }

@media (max-width: 960px) {
  .gallery-grid {
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 300px 220px 220px 240px;
    grid-template-areas:
      "mine  mine"
      "spod  brine"
      "spod  cells"
      "ev    grid";
  }
  .lightbox figure { grid-template-columns: 1fr; overflow: auto; }
  .lightbox img { max-height: 58vh; }
  .lightbox figcaption { padding: 22px 22px 26px; }
  .lightbox-next { right: 14px; }
  .lightbox-nav { top: 29vh; }
}

@media (max-width: 640px) {
  .gallery-grid {
    grid-template-columns: 1fr;
    grid-template-rows: none;
    grid-auto-rows: 240px;
    grid-template-areas: none;
  }
  .gallery-grid > * { grid-area: auto; }
  .g-spod { grid-row: span 2; }
  .gallery-item .gallery-cap strong { font-size: 17px; }
}

/* ---------- Photos in material and benefit cards ---------- */

.material-card { --card-bg: #1b3028; }
.card-hydroxide { --card-bg: #303b37; }
.card-feedstock { --card-bg: #4b4234; }
.card-recycled { --card-bg: #26443a; }
.material-photo { position: absolute; left: 0; right: 0; top: 0; height: 60%; overflow: hidden; }
.material-photo img { width: 100%; height: 100%; object-fit: cover; transition: transform 1.2s var(--ease); }
.material-photo::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(10, 20, 16, .62) 0%, transparent 32%, transparent 48%, var(--card-bg) 100%);
}
.material-card:hover .material-photo img { transform: scale(1.07); }

.benefit-photo { margin: -30px -28px 0; height: 190px; overflow: hidden; background: #dcdcd0; }
.benefit-photo img { width: 100%; height: 100%; object-fit: cover; transition: transform 1.1s var(--ease); }
.benefit-card:hover .benefit-photo img { transform: scale(1.06); }
.benefit-photo + .benefit-icon { position: relative; margin: -29px 0 18px; border: 4px solid var(--paper); box-sizing: content-box; }

.gallery-credit-link { margin: 22px 0 0; font: 12px/1.6 var(--mono); color: #6f7a71; }
.gallery-credit-link a { color: var(--green2); }
.research-section .photo-credits { margin-top: 36px; }

@media (max-width: 640px) {
  .benefit-photo { margin: -26px -22px 0; height: 170px; }
}