/* ---------- Tokens ---------- */
:root {
  --paper: #EEF1EC;
  --paper-raised: #F8FAF6;
  --ink: #14181B;
  --ink-soft: #4B5563;
  --amber: #8A5A1E;
  --amber-deep: #6E4716;
  --teal: #1D7268;
  --alert: #A93226;
  --line: #C9CFC7;

  --display: 'Barlow Condensed', sans-serif;
  --body-font: 'Literata', serif;
  --mono: 'IBM Plex Mono', monospace;

  --wrap: 1120px;
}

/* ---------- Reset ---------- */
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--body-font);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font: inherit; cursor: pointer; }

.wrap {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 28px;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: auto;
}
.skip-link:focus {
  left: 16px;
  top: 16px;
  background: var(--ink);
  color: var(--paper);
  padding: 10px 16px;
  z-index: 100;
}

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

.eyebrow {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--amber-deep);
  margin-bottom: 14px;
}
.eyebrow::before {
  content: "— ";
  color: var(--teal);
}

h1, h2, h3 {
  font-family: var(--display);
  font-weight: 600;
  letter-spacing: 0.005em;
  color: var(--ink);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  font-family: var(--mono);
  font-size: 14px;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  padding: 13px 24px;
  border-radius: 2px;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}
.btn-primary {
  background: var(--ink);
  color: var(--paper);
  border: 1px solid var(--ink);
}
.btn-primary:hover { background: var(--teal); border-color: var(--teal); }
.btn-ghost {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--ink);
}
.btn-ghost:hover { border-color: var(--amber); color: var(--amber-deep); }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  background: var(--paper);
  border-bottom: 1px solid var(--line);
  z-index: 10;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}
.wordmark {
  font-family: var(--display);
  font-weight: 700;
  font-size: 22px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.wordmark.small { font-size: 16px; }
.site-header nav { display: flex; gap: 28px; }
.site-header nav a {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--ink-soft);
}
.site-header nav a:hover { color: var(--ink); }
.nav-cta {
  font-family: var(--mono) !important;
  font-size: 12px !important;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  background: var(--ink);
  color: var(--paper) !important;
  padding: 8px 14px;
  border-radius: 2px;
  transition: background 0.15s ease;
}
.nav-cta:hover { background: var(--teal); color: var(--paper) !important; }

/* ---------- Hero ---------- */
.hero { padding: 76px 0 88px; }
.hero-inner {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 56px;
  align-items: center;
}
h1 {
  font-size: clamp(40px, 5.4vw, 68px);
  line-height: 1.02;
  margin-bottom: 22px;
}
.lede {
  font-size: 19px;
  max-width: 46ch;
  color: var(--ink);
  margin-bottom: 18px;
}
.pivot-note {
  font-size: 14.5px;
  color: var(--ink-soft);
  border-left: 3px solid var(--amber);
  padding-left: 14px;
  max-width: 48ch;
  margin-bottom: 30px;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }

.hero-visual { position: relative; display: flex; flex-direction: column; align-items: center; }
.receptor-svg { width: 100%; max-width: 320px; }
.membrane-line {
  fill: none;
  stroke: var(--line);
  stroke-width: 1.5;
}
.receptor-body {
  fill: var(--paper-raised);
  stroke: var(--teal);
  stroke-width: 2;
  transition: filter 0.3s ease;
}
.cavity {
  fill: var(--paper);
}
.tail-marker {
  fill: var(--teal);
  animation: activate-tail 7s cubic-bezier(0.4, 0, 0.2, 1) infinite;
}
.ligand-main, .ligand-tab {
  fill: var(--amber);
}
.ligand {
  transform-origin: 0px 0px;
  animation: dock-ligand 7s cubic-bezier(0.4, 0, 0.2, 1) infinite;
}

.visual-caption {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink-soft);
  margin-top: 14px;
  letter-spacing: 0.03em;
}

@keyframes dock-ligand {
  0%   { transform: translate(96px, 30px) rotate(-24deg); opacity: 1; filter: none; }
  40%  { transform: translate(158px, 112px) rotate(0deg); opacity: 1; filter: none; }
  55%  { transform: translate(158px, 112px) rotate(0deg); opacity: 1; filter: drop-shadow(0 0 7px rgba(138, 90, 30, 0.5)); }
  80%  { transform: translate(158px, 112px) rotate(0deg); opacity: 1; filter: none; }
  90%  { transform: translate(158px, 112px) rotate(0deg); opacity: 0; }
  91%  { transform: translate(96px, 30px) rotate(-24deg); opacity: 0; }
  100% { transform: translate(96px, 30px) rotate(-24deg); opacity: 1; }
}

@keyframes activate-tail {
  0%   { transform: translate(0px, 0px); fill: var(--teal); }
  40%  { transform: translate(0px, 0px); fill: var(--teal); }
  55%  { transform: translate(5px, 9px); fill: var(--amber); }
  80%  { transform: translate(5px, 9px); fill: var(--amber); }
  91%  { transform: translate(0px, 0px); fill: var(--teal); }
  100% { transform: translate(0px, 0px); fill: var(--teal); }
}

@media (prefers-reduced-motion: reduce) {
  .ligand, .tail-marker { animation: none; }
  .ligand { transform: translate(158px, 112px) rotate(0deg); }
  html { scroll-behavior: auto; }
}

/* ---------- Breakdown cards ---------- */
.breakdowns { padding: 72px 0; border-top: 1px solid var(--line); }
.section-head { max-width: 60ch; margin-bottom: 40px; }
.section-head h2 { font-size: clamp(26px, 3vw, 36px); }

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 18px;
}
.insert-card {
  display: flex;
  flex-direction: column;
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-top: 3px dashed var(--teal);
  padding: 24px 22px;
  text-decoration: none;
  color: inherit;
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.5s ease, transform 0.5s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}
.insert-card.is-visible { opacity: 1; transform: translateY(0); }

.insert-card:hover {
  border-top-style: solid;
  border-color: var(--amber);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
  transform: translateY(-2px);
}
.insert-card:hover h3 {
  color: var(--amber-deep);
}

.insert-card .tag {
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--amber-deep);
  margin-bottom: 10px;
}
.insert-card h3 {
  font-size: 21px;
  margin-bottom: 10px;
  transition: color 0.2s ease;
}
.insert-card p:not(.tag):not(.cite) {
  font-size: 15px;
  color: var(--ink-soft);
  margin-bottom: 16px;
  flex-grow: 1;
}
.insert-card .cite {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--teal);
  border-top: 1px solid var(--line);
  padding-top: 12px;
}

/* ---------- About ---------- */
.about { padding: 76px 0; border-top: 1px solid var(--line); }
.about-inner {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 56px;
  align-items: start;
}
.about-copy h2 { font-size: clamp(26px, 3vw, 36px); margin-bottom: 16px; }
.about-copy p { color: var(--ink-soft); max-width: 52ch; }

.stat-list { display: flex; flex-direction: column; gap: 22px; }
.stat-list li {
  display: flex;
  align-items: baseline;
  gap: 14px;
  border-top: 1px solid var(--line);
  padding-top: 16px;
}
.stat-num {
  font-family: var(--display);
  font-size: 30px;
  font-weight: 700;
  color: var(--teal);
  min-width: 88px;
  flex-shrink: 0;
}
.stat-label { color: var(--ink-soft); font-size: 14.5px; }

/* ---------- Subscribe / Rx pad ---------- */
.subscribe { padding: 88px 0; border-top: 1px solid var(--line); }
.rx-pad {
  max-width: 560px;
  margin: 0 auto;
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-left: 4px solid var(--alert);
  padding: 32px 34px;
  background-image: repeating-linear-gradient(
    to bottom,
    transparent 0,
    transparent 34px,
    var(--line) 35px
  );
}
.rx-pad-head {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 18px;
}
.rx-symbol {
  font-family: var(--body-font);
  font-style: italic;
  font-weight: 600;
  font-size: 40px;
  color: var(--alert);
}
.rx-name {
  font-family: var(--display);
  font-size: 20px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}
.rx-sub {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink-soft);
}
.rx-sig {
  font-size: 15px;
  color: var(--ink-soft);
  margin-bottom: 24px;
}
.rx-form {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 14px;
}
.rx-form label { position: absolute; left: -9999px; }
.rx-form input[type="email"] {
  flex: 1 1 220px;
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--ink);
  font-family: var(--body-font);
  font-size: 16px;
  padding: 8px 4px;
  color: var(--ink);
}
.rx-form input[type="email"]:focus { outline: none; border-bottom-color: var(--teal); }
.rx-fineprint {
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--ink-soft);
}

/* ---------- Community / Shop split sections ---------- */
.community, .shop, .consult { padding: 64px 0; border-top: 1px solid var(--line); }
.shop { background: var(--paper-raised); }
.split-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 32px;
  flex-wrap: wrap;
}
.split-inner h2 { font-size: clamp(22px, 2.6vw, 30px); margin-bottom: 10px; }
.split-inner p { color: var(--ink-soft); max-width: 50ch; }

/* ---------- Footer ---------- */
.site-footer { border-top: 1px solid var(--line); padding: 32px 0; }
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}
.footer-inner nav { display: flex; gap: 20px; }
.footer-inner nav a {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--ink-soft);
}
.footer-inner nav a:hover { color: var(--ink); }
.copyright {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink-soft);
}

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-visual { order: -1; max-width: 260px; margin: 0 auto 8px; }
  .about-inner { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .site-header nav { gap: 12px; flex-wrap: wrap; justify-content: flex-end; }
  .site-header nav a { font-size: 12px; }
  .header-inner { height: auto; padding: 12px 0; flex-wrap: wrap; gap: 10px; }
  .hero { padding: 52px 0 60px; }
}