/* ==========================================================================
   Cellaire Labs — Edgy Minimalistic Research Library
   Dark-native · lime accent · sharp corners · spec-sheet aesthetic
   ========================================================================== */

:root,
[data-theme='light'] {
  /* Surfaces — warm cream */
  --color-bg: #f5f3ed;
  --color-surface: #fbfaf6;
  --color-surface-2: #ffffff;
  --color-surface-offset: #edeae2;
  --color-divider: #e0ddd4;
  --color-border: #c9c5ba;

  /* Text — solid black */
  --color-text: #0a0a0a;
  --color-text-muted: #5c5a52;
  --color-text-faint: #9a988e;

  /* Accent — monochrome black */
  --color-accent: #0a0a0a;
  --color-accent-soft: rgba(10, 10, 10, 0.05);
  --color-accent-bright: #1c1c1c;

  --radius: 0px;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
  --grid-line: rgba(10, 10, 10, 0.035);
}

[data-theme='dark'] {
  --color-bg: #0e0e0c;
  --color-surface: #161510;
  --color-surface-2: #1c1b15;
  --color-surface-offset: #221f18;
  --color-divider: #2a2820;
  --color-border: #36332a;

  --color-text: #f5f3ed;
  --color-text-muted: #9a988e;
  --color-text-faint: #5c5a52;

  --color-accent: #f5f3ed;
  --color-accent-soft: rgba(245, 243, 237, 0.07);
  --color-accent-bright: #ffffff;

  --shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
  --grid-line: rgba(245, 243, 237, 0.025);
}

:root {
  --font-display: 'Cabinet Grotesk', 'Helvetica Neue', sans-serif;
  --font-body: 'Satoshi', 'Helvetica Neue', sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;

  --text-xs: clamp(0.75rem, 0.7rem + 0.2vw, 0.8rem);
  --text-sm: clamp(0.82rem, 0.78rem + 0.2vw, 0.9rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.1rem);
  --text-lg: clamp(1.15rem, 1rem + 0.6vw, 1.4rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1vw, 2.1rem);
  --text-2xl: clamp(2.2rem, 1.4rem + 2.4vw, 3.6rem);
  --text-hero: clamp(2.8rem, 1.4rem + 5.5vw, 5.2rem);

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  --content: 1180px;
  --content-narrow: 720px;
  --transition: 180ms cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  -webkit-text-size-adjust: none;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;
}

body {
  min-height: 100dvh;
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  background-image: linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 72px 72px;
  background-position: -1px -1px;
}

img,
svg {
  display: block;
  max-width: 100%;
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-display);
  line-height: 1.05;
  letter-spacing: -0.02em;
  text-wrap: balance;
}

p,
li {
  text-wrap: pretty;
  max-width: 70ch;
}

::selection {
  background: var(--color-accent);
  color: var(--color-bg);
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition);
}

button {
  cursor: pointer;
  font: inherit;
  color: inherit;
  background: none;
  border: none;
}

.mono {
  font-family: var(--font-mono);
  font-feature-settings: 'tnum' 1;
}

.container {
  width: 100%;
  max-width: var(--content);
  margin-inline: auto;
  padding-inline: var(--space-6);
}

.accent {
  color: var(--color-accent);
}

/* ----- Buttons ----- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.7rem 1.25rem;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: 0.02em;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-surface);
  color: var(--color-text);
  transition: all var(--transition);
  white-space: nowrap;
}

.btn-sm {
  padding: 0.5rem 0.9rem;
  font-size: var(--text-xs);
}

.btn-block {
  width: 100%;
}

.btn-accent {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-bg);
  font-weight: 700;
}

.btn-accent:hover {
  background: var(--color-accent-bright);
  border-color: var(--color-accent-bright);
  transform: translateY(-1px);
}

.btn-ghost {
  background: transparent;
  border-color: var(--color-border);
}

.btn-ghost:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

/* ----- Header ----- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in oklab, var(--color-bg) 88%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  height: 4rem;
}

.brand {
  display: inline-flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.3rem;
}

.brand-logo {
  height: 22px;
  width: auto;
  display: block;
}

.brand-logo-lg {
  height: 38px;
}

[data-theme='dark'] .brand-logo {
  filter: invert(1);
}

.brand-tag {
  font-size: 0.5rem;
  letter-spacing: 0.3em;
  line-height: 1;
  text-transform: uppercase;
  color: var(--color-text-faint);
  white-space: nowrap;
}

.brand-logo-lg + .brand-tag {
  font-size: 0.625rem;
  letter-spacing: 0.38em;
}

.brand-word {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--text-lg);
  letter-spacing: 0.02em;
  line-height: 1;
}

.brand-tag {
  font-size: 0.55rem;
  letter-spacing: 0.28em;
  color: var(--color-text-faint);
  text-transform: uppercase;
}

.brand-mark {
  color: var(--color-accent);
  flex-shrink: 0;
}

.brand-dot {
  color: var(--color-accent);
}

.site-nav {
  display: flex;
  gap: var(--space-6);
}

.site-nav a {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  position: relative;
}

.site-nav a:hover {
  color: var(--color-text);
}

.site-nav a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -0.35rem;
  width: 0;
  height: 1px;
  background: var(--color-accent);
  transition: width var(--transition);
}

.site-nav a:hover::after {
  width: 100%;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  transition: all var(--transition);
}

.theme-toggle:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

/* ----- Hero ----- */
.hero {
  position: relative;
  padding-block: clamp(var(--space-12), 8vw, var(--space-24));
  border-bottom: 1px solid var(--color-border);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -20%;
  right: -10%;
  width: 60%;
  height: 120%;
  background: radial-gradient(
    circle at center,
    var(--color-accent-soft) 0%,
    transparent 60%
  );
  pointer-events: none;
}

.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: var(--space-12);
  align-items: end;
}

.kicker {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-5);
}

.pulse {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 0 0 var(--color-accent);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% {
    box-shadow: 0 0 0 0 color-mix(in oklab, var(--color-accent) 60%, transparent);
  }
  70% {
    box-shadow: 0 0 0 8px transparent;
  }
  100% {
    box-shadow: 0 0 0 0 transparent;
  }
}

.hero-title {
  font-size: var(--text-hero);
  font-weight: 800;
  letter-spacing: -0.01em;
  line-height: 0.98;
  text-transform: uppercase;
}

.hero-sub {
  margin-top: var(--space-6);
  max-width: 52ch;
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  line-height: 1.5;
}

.hero-cta {
  margin-top: var(--space-8);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.hero-spec {
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  padding: var(--space-5);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.spec-row {
  display: flex;
  justify-content: space-between;
  gap: var(--space-4);
  padding-block: var(--space-3);
  border-bottom: 1px solid var(--color-divider);
}

.spec-row:last-child {
  border-bottom: none;
}

.spec-key {
  color: var(--color-text-faint);
}

.spec-val {
  color: var(--color-text);
}

.spec-live {
  color: var(--color-accent);
}

/* ----- Ticker ----- */
.ticker {
  margin-top: var(--space-12);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  overflow: hidden;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
}

.ticker-track {
  display: inline-flex;
  align-items: center;
  gap: var(--space-4);
  padding-block: var(--space-3);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-text-muted);
  white-space: nowrap;
  animation: ticker 40s linear infinite;
}

.ticker-track .dot {
  color: var(--color-accent);
}

@keyframes ticker {
  to {
    transform: translateX(-50%);
  }
}

/* ----- Disclaimer strip ----- */
.disclaimer-strip {
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface);
}

.disclaimer-strip .container {
  padding-block: var(--space-3);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
}

.disclaimer-strip strong {
  color: var(--color-accent);
}

/* ----- Sections ----- */
.section {
  padding-block: clamp(var(--space-12), 6vw, var(--space-20));
  border-bottom: 1px solid var(--color-border);
}

.section-alt {
  background: var(--color-surface);
}

.section-head {
  max-width: var(--content-narrow);
  margin-bottom: var(--space-10);
}

.section-kicker {
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--color-text-faint);
  margin-bottom: var(--space-3);
}

.section-title {
  font-size: var(--text-xl);
  font-weight: 700;
}

.section-lead {
  margin-top: var(--space-4);
  color: var(--color-text-muted);
  font-size: var(--text-base);
}

/* ----- Category labels (singles) ----- */
.singles-container {
  display: flex;
  flex-direction: column;
  gap: var(--space-10);
}

.category-label {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--color-text-muted);
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-4);
}

.category-count {
  color: var(--color-text-faint);
  font-variant-numeric: tabular-nums;
}

.category-count::before {
  content: '/ ';
}

/* ----- Filter bar ----- */
[hidden] {
  display: none !important;
}

.filter-bar {
  position: sticky;
  top: 4rem;
  z-index: 30;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-bottom: var(--space-8);
  padding: var(--space-4) 0 var(--space-4);
  background: color-mix(in oklab, var(--color-bg) 94%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.filter-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.filter-search {
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex: 1 1 18rem;
  max-width: 26rem;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  padding: 0 var(--space-3);
}

.filter-search-icon {
  flex: none;
  color: var(--color-text-faint);
}

.filter-search input {
  flex: 1 1 auto;
  min-width: 0;
  border: 0;
  background: transparent;
  color: var(--color-text);
  font-size: var(--text-sm);
  letter-spacing: 0.02em;
  padding: 0.6rem 0;
  outline: none;
  appearance: none;
}

.filter-search input::-webkit-search-cancel-button {
  appearance: none;
}

.filter-search input::placeholder {
  color: var(--color-text-faint);
}

.filter-search:focus-within {
  border-color: var(--color-text);
}

.filter-clear {
  flex: none;
  border: 0;
  background: transparent;
  color: var(--color-text-muted);
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  cursor: pointer;
  padding: 0.25rem 0.15rem;
}

.filter-clear:hover {
  color: var(--color-text);
}

.filter-chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.chip {
  border: 1px solid var(--color-border);
  background: transparent;
  color: var(--color-text-muted);
  font-size: 0.625rem;
  text-transform: uppercase;
  letter-spacing: 0.11em;
  padding: 0.42rem 0.7rem;
  cursor: pointer;
  transition: color 0.15s ease, border-color 0.15s ease, background 0.15s ease;
}

.chip:hover {
  color: var(--color-text);
  border-color: var(--color-text);
}

.chip.is-active {
  background: var(--color-text);
  border-color: var(--color-text);
  color: var(--color-bg);
}

.alpha-index {
  display: flex;
  flex-wrap: wrap;
  gap: 1px;
}

.alpha-btn {
  border: 0;
  background: transparent;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.04em;
  width: 1.55rem;
  height: 1.55rem;
  cursor: pointer;
  transition: color 0.12s ease, background 0.12s ease;
}

.alpha-btn:hover:not(:disabled) {
  color: var(--color-text);
  background: var(--color-surface-offset);
}

.alpha-btn.is-empty {
  color: var(--color-border);
  cursor: default;
}

.alpha-btn.is-active {
  background: var(--color-text);
  color: var(--color-bg);
}

.filter-count {
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-text-faint);
  font-variant-numeric: tabular-nums;
}

.no-results {
  padding: var(--space-10) 0;
  text-align: center;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.no-results button {
  border: 0;
  background: transparent;
  color: var(--color-text);
  font-family: inherit;
  font-size: inherit;
  text-decoration: underline;
  text-underline-offset: 3px;
  cursor: pointer;
}

/* ----- Card grids ----- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--color-border);
  border: 1px solid var(--color-border);
}

.card {
  background: var(--color-bg);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  transition: background var(--transition);
}

.section-alt .card {
  background: var(--color-surface);
}

.card:hover {
  background: var(--color-surface-offset);
}

.card-tag {
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-faint);
}

.card-title {
  font-size: var(--text-lg);
  font-weight: 700;
}

.card-desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.55;
  flex-grow: 1;
}

.card-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: var(--space-2);
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-divider);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

.card-link {
  color: var(--color-text);
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
}

.card-link:hover {
  color: var(--color-accent);
}

.card-link::after {
  content: '→';
  transition: transform var(--transition);
}

.card:hover .card-link::after {
  transform: translateX(3px);
}

/* ----- Calculator ----- */
.calc-card {
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  padding: var(--space-8);
}

.calc-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-5);
  align-items: end;
}

.field {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.field-row {
  display: flex;
  border: 1px solid var(--color-border);
  background: var(--color-bg);
}

.field-row input,
.field-row select {
  border: none;
  background: transparent;
  padding: 0.7rem 0.8rem;
  font-family: var(--font-mono);
  font-size: var(--text-base);
  color: var(--color-text);
  width: 100%;
  min-width: 0;
}

.field-row input:focus,
.field-row select:focus {
  outline: none;
}

.field-row select {
  width: auto;
  flex-shrink: 0;
  border-left: 1px solid var(--color-border);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.field-suffix {
  display: inline-flex;
  align-items: center;
  padding-inline: var(--space-3);
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

.field label {
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-faint);
}

.field-submit {
  align-self: stretch;
}

.field-submit .btn {
  height: 100%;
}

.calc-results {
  margin-top: var(--space-6);
  border-top: 1px solid var(--color-divider);
  padding-top: var(--space-5);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-5);
}

.result-row {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.result-key {
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-faint);
}

.result-val {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-accent);
}

.calc-note {
  margin-top: var(--space-5);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  letter-spacing: 0.02em;
}

/* ----- Coming soon ----- */
.coming-soon {
  border: 1px dashed var(--color-border);
  padding: var(--space-12);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
}

.coming-soon-mark {
  color: var(--color-text-faint);
  margin-bottom: var(--space-2);
}

.coming-soon-title {
  font-size: var(--text-lg);
  font-weight: 700;
}

.coming-soon-text {
  max-width: 48ch;
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

.coming-soon-tag {
  margin-top: var(--space-2);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--color-accent);
}

/* ----- Blog ----- */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--color-border);
  border: 1px solid var(--color-border);
}

.blog-card {
  background: var(--color-bg);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  transition: background var(--transition);
}

.blog-card:hover {
  background: var(--color-surface-offset);
}

.blog-meta {
  display: flex;
  justify-content: space-between;
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-faint);
}

.blog-title {
  font-size: var(--text-lg);
  font-weight: 700;
  line-height: 1.2;
}

.blog-excerpt {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  flex-grow: 1;
}

.blog-more {
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-text-faint);
  transition: color var(--transition);
}

.blog-card:hover .blog-more {
  color: var(--color-text);
}

/* ----- Article / post pages ----- */
.container-narrow {
  max-width: 44rem;
}

.article {
  padding-block: var(--space-12) var(--space-16);
}

.back-link {
  display: inline-block;
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-text-faint);
  margin-bottom: var(--space-10);
}

.back-link:hover {
  color: var(--color-text);
}

.article-kicker {
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--color-text-faint);
  margin-bottom: var(--space-4);
}

.article-title {
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 4.4vw, 2.9rem);
  font-weight: 800;
  line-height: 1.06;
  letter-spacing: -0.02em;
  text-wrap: balance;
}

.article-standfirst {
  margin-top: var(--space-5);
  font-size: var(--text-lg);
  line-height: 1.5;
  color: var(--color-text-muted);
  padding-bottom: var(--space-8);
  border-bottom: 1px solid var(--color-border);
}

.prose {
  margin-top: var(--space-10);
}

.prose h2 {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.01em;
  margin-top: var(--space-12);
  margin-bottom: var(--space-4);
}

.prose h2:first-child {
  margin-top: 0;
}

.prose p {
  margin-bottom: var(--space-5);
  line-height: 1.7;
  color: var(--color-text);
}

.prose strong {
  font-weight: 700;
}

.prose em {
  font-style: italic;
}

.prose ul {
  margin: 0 0 var(--space-5);
  padding-left: 1.1rem;
  list-style: none;
}

.prose ul li {
  position: relative;
  margin-bottom: var(--space-3);
  line-height: 1.65;
}

.prose ul li::before {
  content: '';
  position: absolute;
  left: -1.1rem;
  top: 0.72em;
  width: 0.4rem;
  height: 1px;
  background: var(--color-text-faint);
}

.prose pre {
  margin: 0 0 var(--space-6);
  padding: var(--space-5);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-left: 2px solid var(--color-text);
  font-size: 0.78rem;
  line-height: 1.85;
  color: var(--color-text);
  overflow-x: auto;
  white-space: pre;
}

.article-foot {
  margin-top: var(--space-16);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border);
  font-size: 0.6875rem;
  line-height: 1.7;
  letter-spacing: 0.04em;
  color: var(--color-text-faint);
}

/* ----- CTA band ----- */
.cta-band {
  padding-block: clamp(var(--space-16), 7vw, var(--space-24));
  border-bottom: 1px solid var(--color-border);
  text-align: center;
}

.cta-title {
  font-size: var(--text-2xl);
  font-weight: 800;
}

.cta-text {
  margin: var(--space-4) auto var(--space-8);
  color: var(--color-text-muted);
  max-width: 48ch;
}

/* ----- Footer ----- */
.site-footer {
  background: var(--color-surface);
  padding-block: var(--space-16) var(--space-8);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 2fr;
  gap: var(--space-12);
}

.footer-brand .brand {
  margin-bottom: var(--space-3);
}

.footer-tag {
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-faint);
  max-width: 32ch;
}

.footer-nav {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer-nav a {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.footer-nav a:hover {
  color: var(--color-accent);
}

.footer-legal {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  line-height: 1.6;
  letter-spacing: 0.02em;
}

.footer-legal strong {
  color: var(--color-accent);
}

.copy {
  margin-top: var(--space-4);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* ----- Responsive ----- */
@media (max-width: 960px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }
  .hero-spec {
    order: -1;
  }
  .calc-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .calc-results {
    grid-template-columns: repeat(2, 1fr);
  }
  .card-grid,
  .blog-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 680px) {
  .site-nav {
    display: none;
  }
  .card-grid,
  .blog-grid {
    grid-template-columns: 1fr;
  }
  .calc-grid,
  .calc-results {
    grid-template-columns: 1fr;
  }
  .field-submit {
    margin-top: var(--space-2);
  }
  .header-actions .btn-sm {
    display: none;
  }
  .calc-card {
    padding: var(--space-5);
  }
  .coming-soon {
    padding: var(--space-8);
  }
}

@media (prefers-reduced-motion: reduce) {
  .ticker-track,
  .pulse {
    animation: none;
  }
}

/* ── Evidence tier badges + source links on cards ───────────── */
.card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-3);
}

.card-top .card-title {
  flex: 1 1 auto;
  min-width: 0;
}

.tier {
  flex: 0 0 auto;
  font-size: 0.5625rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  line-height: 1;
  padding: 0.3rem 0.4rem;
  white-space: nowrap;
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  margin-top: 0.15rem;
}

.tier-approved {
  background: var(--color-text);
  border-color: var(--color-text);
  color: var(--color-bg);
}

.tier-clinical {
  border-color: var(--color-text);
  color: var(--color-text);
}

.tier-preclinical {
  border-color: var(--color-border);
  color: var(--color-text-muted);
}

.tier-unverified {
  border-style: dashed;
  border-color: var(--color-text-muted);
  color: var(--color-text-muted);
}

.card-src {
  display: block;
  margin-top: var(--space-2);
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-divider);
  font-size: 0.6875rem;
  line-height: 1.45;
  letter-spacing: 0.02em;
  color: var(--color-text-muted);
  text-decoration: none;
  transition: var(--transition);
}

.card-src:hover,
.card-src:focus-visible {
  color: var(--color-text);
  text-decoration: underline;
  text-underline-offset: 2px;
}

@media (max-width: 520px) {
  .card-top {
    flex-direction: column;
    gap: var(--space-2);
  }
  .tier {
    align-self: flex-start;
    margin-top: 0;
  }
}

/* ── Tier legend ────────────────────────────────────────────── */
.tier-legend {
  margin-bottom: var(--space-6);
  padding: var(--space-4) var(--space-5);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
}

.tier-legend-label {
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-faint);
  margin-bottom: var(--space-3);
}

.tier-legend-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: var(--space-3) var(--space-6);
}

.tier-legend-list li {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.tier-legend-def {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.4;
}

/* ── Mobile: keep the sticky filter bar compact ─────────────── */
@media (max-width: 700px) {
  .filter-chips,
  .alpha-index {
    flex-wrap: nowrap;
    overflow-x: auto;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 2px;
  }

  .filter-chips::-webkit-scrollbar,
  .alpha-index::-webkit-scrollbar {
    display: none;
  }

  .chip,
  .alpha-btn {
    flex: 0 0 auto;
  }

  .tier-legend-list {
    grid-template-columns: 1fr;
  }
}

/* ── Mobile nav drawer ──────────────────────────────────────── */
.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  padding: 0;
  background: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-text);
  cursor: pointer;
  transition: var(--transition);
}

.nav-toggle:hover {
  border-color: var(--color-text);
}

.nav-toggle-bars {
  display: flex;
  flex-direction: column;
  gap: 3px;
  width: 15px;
}

.nav-toggle-bars i {
  display: block;
  height: 1.5px;
  background: currentColor;
  transition: var(--transition);
}

.drawer-backdrop {
  position: fixed;
  inset: 0;
  z-index: 90;
  background: rgba(10, 10, 10, 0.45);
  backdrop-filter: blur(2px);
  opacity: 0;
  transition: opacity 0.22s ease;
}

.drawer-backdrop.is-open {
  opacity: 1;
}

.drawer {
  position: fixed;
  top: 0;
  right: 0;
  z-index: 100;
  display: flex;
  flex-direction: column;
  width: min(21rem, 88vw);
  height: 100%;
  padding: var(--space-5);
  overflow-y: auto;
  overscroll-behavior: contain;
  background: var(--color-bg);
  border-left: 1px solid var(--color-border);
  transform: translateX(100%);
  transition: transform 0.26s cubic-bezier(0.4, 0, 0.2, 1);
}

.drawer.is-open {
  transform: translateX(0);
}

.drawer-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-border);
}

.drawer-logo {
  height: 18px;
  width: auto;
}

[data-theme='dark'] .drawer-logo {
  filter: invert(1);
}

.drawer-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  padding: 0;
  background: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-text);
  cursor: pointer;
  transition: var(--transition);
}

.drawer-close:hover {
  border-color: var(--color-text);
}

.drawer-search {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-top: var(--space-5);
  padding: 0 var(--space-3);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
}

.drawer-search:focus-within {
  border-color: var(--color-text);
}

.drawer-search input {
  flex: 1 1 auto;
  min-width: 0;
  padding: 0.7rem 0;
  background: transparent;
  border: 0;
  outline: none;
  color: var(--color-text);
  font-size: var(--text-sm);
}

.drawer-search input::placeholder {
  color: var(--color-text-faint);
}

.drawer-nav {
  margin-top: var(--space-5);
}

.drawer-list,
.drawer-sublist {
  list-style: none;
  margin: 0;
  padding: 0;
}

.drawer-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  width: 100%;
  padding: 0.85rem 0;
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--color-divider);
  color: var(--color-text);
  font-family: inherit;
  font-size: var(--text-base);
  font-weight: 600;
  text-align: left;
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition);
}

.drawer-link:hover {
  color: var(--color-text-muted);
}

.drawer-chev {
  flex: 0 0 auto;
  color: var(--color-text-faint);
  transition: transform 0.22s ease;
}

.drawer-expand[aria-expanded='true'] .drawer-chev {
  transform: rotate(180deg);
}

.drawer-sublist {
  padding: var(--space-2) 0 var(--space-3) var(--space-3);
  border-bottom: 1px solid var(--color-divider);
}

.drawer-sub {
  display: block;
  padding: 0.5rem 0;
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  line-height: 1.4;
  text-decoration: none;
  transition: var(--transition);
}

.drawer-sub:hover {
  color: var(--color-text);
}

.drawer-cta {
  margin-top: var(--space-6);
  text-align: center;
}

.drawer-foot {
  margin-top: var(--space-4);
  font-size: 0.625rem;
  line-height: 1.5;
  color: var(--color-text-faint);
}

body.drawer-open {
  overflow: hidden;
}

@media (max-width: 680px) {
  .nav-toggle {
    display: flex;
  }
}

@media (min-width: 681px) {
  .drawer,
  .drawer-backdrop {
    display: none !important;
  }
}

/* ── Card: full-profile link ─────────────────────────────────── */
.card-detail {
  display: inline-block;
  align-self: flex-start;
  margin-top: var(--space-3);
  padding-bottom: 2px;
  border-bottom: 1px solid var(--color-text);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--color-text);
  text-decoration: none;
  transition: var(--transition);
}

.card-detail:hover,
.card-detail:focus-visible {
  color: var(--color-text-muted);
  border-bottom-color: var(--color-text-muted);
}

/* ── Drawer: nested compound lists (level 3) ──────────────────── */
.drawer-head,
.drawer-search {
  position: sticky;
  z-index: 2;
  background: var(--color-bg);
}

.drawer-head {
  top: calc(var(--space-5) * -1);
  padding-top: var(--space-5);
  margin-top: calc(var(--space-5) * -1);
}

.drawer-search {
  top: 3.1rem;
}

/* Category row inside "Single Peptides" is a button, so reset it. */
button.drawer-sub {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  width: 100%;
  background: transparent;
  border: 0;
  font-family: inherit;
  font-weight: 500;
  text-align: left;
  cursor: pointer;
}

button.drawer-sub > span:first-child {
  flex: 1 1 auto;
}

.drawer-count {
  flex: 0 0 auto;
  font-size: 0.625rem;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  font-variant-numeric: tabular-nums;
}

.drawer-expand-2[aria-expanded='true'] {
  color: var(--color-text);
  font-weight: 600;
}

/* Shop Catalog section — surfaced buyable products */
.drawer-shop { border-bottom: 1px solid var(--color-divider); }
.drawer-shop-toggle {
  color: var(--color-accent);
  font-weight: 600;
}
.drawer-shop-toggle .drawer-count {
  background: var(--color-accent);
  color: var(--color-bg);
  padding: 0 0.3rem;
  border-radius: 999px;
  font-size: 0.5625rem;
}
.drawer-shop-toggle[aria-expanded='true'] { color: var(--color-accent); }
.drawer-shop-list { padding: var(--space-1) 0 var(--space-2); }
.drawer-shop-label {
  padding: var(--space-2) var(--space-4) var(--space-1);
  font-size: 0.5625rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-faint);
}
.drawer-item-shop .drawer-item-tier {
  color: var(--color-accent);
  font-weight: 600;
}

.drawer-itemlist {
  list-style: none;
  margin: 0 0 var(--space-2);
  padding: 0 0 var(--space-1) var(--space-3);
  border-left: 1px solid var(--color-divider);
}

.drawer-item {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-2);
  padding: 0.4rem 0;
  color: var(--color-text-muted);
  font-size: 0.8125rem;
  line-height: 1.35;
  text-decoration: none;
  transition: var(--transition);
}

.drawer-item:hover,
.drawer-item:focus-visible {
  color: var(--color-text);
}

.drawer-item-name {
  flex: 1 1 auto;
}

.drawer-item-tier {
  flex: 0 0 auto;
  font-size: 0.625rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.drawer-item-all {
  color: var(--color-text);
  font-weight: 500;
  font-size: 0.75rem;
}

.drawer-sub-all {
  font-weight: 600;
  color: var(--color-text);
}

/* ── Testosterone literature index ─────────────────────────────── */
.lit-intro {
  margin-bottom: var(--space-5);
  color: var(--color-text-muted);
}

.lit-section-title {
  margin-top: var(--space-10);
  margin-bottom: var(--space-2);
  font-size: var(--text-xl);
  font-weight: 700;
  letter-spacing: -0.01em;
  font-family: "Cabinet Grotesk", sans-serif;
}

.lit-section-blurb {
  margin-bottom: var(--space-4);
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

.lit-list {
  list-style: none;
  margin: 0 0 var(--space-6);
  padding: 0;
  border-top: 1px solid var(--color-divider);
}

.lit-item {
  padding: var(--space-5) 0;
  border-bottom: 1px solid var(--color-divider);
}

.lit-item-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-3);
  margin-bottom: var(--space-2);
}

.lit-item-meta {
  flex: 1 1 auto;
  min-width: 0;
}

.lit-item-title {
  margin: 0 0 var(--space-1);
  font-size: var(--text-base);
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: -0.005em;
  font-family: "Cabinet Grotesk", sans-serif;
  color: var(--color-text);
}

.lit-item-cite {
  margin: 0 0 var(--space-1);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.lit-item-type {
  margin: 0;
  font-size: 0.5625rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-faint);
}

.lit-item-head .tier-badge {
  flex: 0 0 auto;
  align-self: flex-start;
}

.lit-item-desc {
  margin: 0 0 var(--space-3);
  font-size: var(--text-sm);
  line-height: 1.55;
  color: var(--color-text-muted);
}

.lit-item-src {
  display: inline-block;
  padding-bottom: 2px;
  border-bottom: 1px solid var(--color-text);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--color-text);
  text-decoration: none;
  transition: var(--transition);
}

.lit-item-src:hover,
.lit-item-src:focus-visible {
  color: var(--color-text-muted);
  border-bottom-color: var(--color-text-muted);
}

.lit-disclaimer {
  margin-top: var(--space-12);
  padding: var(--space-6);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
}

.lit-disclaimer h2 {
  margin: 0 0 var(--space-3);
  font-size: var(--text-base);
  font-weight: 700;
  font-family: "Cabinet Grotesk", sans-serif;
}

.lit-disclaimer p {
  margin: 0;
  font-size: var(--text-sm);
  line-height: 1.55;
  color: var(--color-text-muted);
}

@media (max-width: 680px) {
  .lit-item-head {
    flex-direction: column;
    gap: var(--space-2);
  }
  .lit-item-head .tier-badge {
    align-self: flex-start;
  }
}

/* ── Testosterone index preview cards (on catalog page) ────────── */
.t-index-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-3);
  margin-top: var(--space-6);
}

.t-index-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-5);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  text-decoration: none;
  transition: var(--transition);
}

.t-index-card:hover,
.t-index-card:focus-visible {
  border-color: var(--color-text);
  background: var(--color-surface-offset);
}

.t-index-label {
  font-size: 0.5625rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-faint);
}

.t-index-title {
  font-size: var(--text-base);
  font-weight: 600;
  line-height: 1.25;
  color: var(--color-text);
  font-family: "Cabinet Grotesk", sans-serif;
}

.t-index-meta {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-bottom: var(--space-1);
}

.t-index-card .tier-badge {
  align-self: flex-start;
}

.t-index-cta {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
  margin-top: var(--space-8);
}

.t-index-note {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

@media (max-width: 860px) {
  .t-index-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 520px) {
  .t-index-grid {
    grid-template-columns: 1fr;
  }
}

/* ─────────────────────────────────────────────────────────────
   Account button in header + mobile bottom tab bar
   ───────────────────────────────────────────────────────────── */
.account-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border: 1px solid var(--color-border);
  color: var(--color-text);
  text-decoration: none;
  transition: var(--transition);
}
.account-btn:hover,
.account-btn:focus-visible {
  border-color: var(--color-text);
  background: var(--color-surface-offset);
}

@media (max-width: 860px) {
  .hide-sm { display: none !important; }
}

/* Mobile bottom tab bar */
.mobile-tabs {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 40;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: 0 var(--space-1);
  padding-bottom: env(safe-area-inset-bottom);
}
.mobile-tabs .tab {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  padding: var(--space-2) 0 calc(var(--space-2) + 2px);
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.6875rem;
  letter-spacing: 0.04em;
  transition: color var(--transition);
}
.mobile-tabs .tab.is-active {
  color: var(--color-accent);
}
.mobile-tabs .tab:hover { color: var(--color-text); }
.mobile-tabs .tab svg { opacity: 0.9; }

@media (max-width: 860px) {
  .mobile-tabs {
    display: flex;
    align-items: stretch;
  }
  main, footer { padding-bottom: calc(64px + env(safe-area-inset-bottom)); }
}

/* ─────────────────────────────────────────────────────────────
   Auth pages (login / register)
   ───────────────────────────────────────────────────────────── */
.auth-shell {
  max-width: 440px;
  margin: 0 auto;
  padding: var(--space-16) var(--space-5);
}
.auth-shell h1 {
  font-family: "Cabinet Grotesk", sans-serif;
  font-size: var(--text-2xl);
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-bottom: var(--space-2);
}
.auth-shell .auth-sub {
  color: var(--color-text-muted);
  margin-bottom: var(--space-8);
  font-size: var(--text-sm);
}
.auth-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}
.auth-field {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}
.auth-field label {
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-faint);
}
.auth-field input {
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  font-family: inherit;
  font-size: var(--text-base);
  transition: var(--transition);
}
.auth-field input:focus {
  outline: none;
  border-color: var(--color-text);
}
.auth-check {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}
.auth-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: var(--space-2);
  gap: var(--space-4);
}
.auth-actions .btn { flex: 1; }
.auth-alt {
  margin-top: var(--space-6);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border);
  text-align: center;
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}
.auth-alt a { color: var(--color-accent); }
.auth-legal {
  margin-top: var(--space-4);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  text-align: center;
}

/* ─────────────────────────────────────────────────────────────
   Chart page — master filterable dosing table
   ───────────────────────────────────────────────────────────── */
.chart-hero {
  padding-top: var(--space-16);
  padding-bottom: var(--space-8);
}
.chart-eyebrow {
  color: var(--color-text-faint);
  letter-spacing: 0.14em;
  font-size: 0.6875rem;
  margin-bottom: var(--space-3);
}
.chart-title {
  font-family: "Cabinet Grotesk", sans-serif;
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.02;
  margin-bottom: var(--space-4);
}
.chart-sub {
  max-width: 62ch;
  color: var(--color-text-muted);
  font-size: var(--text-lg);
  line-height: 1.55;
}

.chart-controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3);
  padding-top: var(--space-4);
  padding-bottom: var(--space-4);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--color-bg);
}

.chart-search {
  position: relative;
  flex: 1 1 240px;
  max-width: 340px;
  display: flex;
  align-items: center;
}
.chart-search svg {
  position: absolute;
  left: var(--space-3);
  color: var(--color-text-faint);
  pointer-events: none;
}
.chart-search input {
  width: 100%;
  padding: var(--space-3) var(--space-3) var(--space-3) calc(var(--space-3) + 22px);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  font: inherit;
  transition: var(--transition);
}
.chart-search input:focus { outline: none; border-color: var(--color-text); }

.chart-filters {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
}
.chart-filters .filter {
  position: relative;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
}
.chart-filters .filter summary {
  list-style: none;
  cursor: pointer;
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  user-select: none;
}
.chart-filters .filter summary::-webkit-details-marker { display: none; }
.chart-filters .filter[open] summary { border-bottom: 1px solid var(--color-border); }
.chart-filters .filter[open] .chevron { transform: rotate(180deg); }
.chart-filters .chevron { transition: transform var(--transition); font-size: 0.75rem; }

.filter-body {
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  min-width: 240px;
  max-height: 320px;
  overflow: auto;
  padding: var(--space-2);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  z-index: 5;
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}
.filter-chip {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-2);
  cursor: pointer;
  transition: background var(--transition);
  font-size: var(--text-sm);
}
.filter-chip:hover { background: var(--color-surface-offset); }
.filter-chip input { accent-color: var(--color-accent); }

.filter-clear {
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--color-border);
  background: transparent;
  color: var(--color-text-muted);
  font: inherit;
  font-size: var(--text-sm);
  cursor: pointer;
  transition: var(--transition);
}
.filter-clear:hover { color: var(--color-text); border-color: var(--color-text); }

.chart-meta {
  margin-left: auto;
  color: var(--color-text-faint);
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
}

/* ── The table ─────────────────────────────────────────────── */
.chart-wrap {
  padding-top: var(--space-6);
  padding-bottom: var(--space-16);
}
.chart-scroll {
  overflow-x: auto;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
}
.dose-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--text-sm);
  min-width: 900px;
}
.dose-table thead th {
  position: sticky;
  top: 0;
  background: var(--color-surface-offset);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-3) var(--space-3);
  text-align: left;
  font-weight: 700;
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  white-space: nowrap;
  z-index: 2;
}
.dose-table thead th.sortable { cursor: pointer; user-select: none; }
.dose-table thead th.sortable:hover { color: var(--color-text); }
.dose-table thead th.num { text-align: right; }
.dose-table tbody td {
  padding: var(--space-3) var(--space-3);
  border-bottom: 1px solid var(--color-divider);
  vertical-align: top;
  line-height: 1.35;
}
.dose-table tbody td.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
.dose-table tbody tr:hover td { background: var(--color-surface-offset); }
.dose-table tbody tr:last-child td { border-bottom: none; }

.sticky-col {
  position: sticky;
  left: 0;
  background: var(--color-surface);
  z-index: 1;
}
.dose-table thead th.sticky-col { z-index: 3; background: var(--color-surface-offset); }
.dose-table tbody tr:hover td.sticky-col { background: var(--color-surface-offset); }

.peptide-link {
  color: var(--color-text);
  font-weight: 600;
  text-decoration: none;
  border-bottom: 1px solid var(--color-border);
  transition: var(--transition);
}
.peptide-link:hover { color: var(--color-accent); border-color: var(--color-accent); }
.peptide-name { font-weight: 600; color: var(--color-text); }

.src-link {
  color: var(--color-text-muted);
  text-decoration: none;
  border-bottom: 1px dotted var(--color-border);
  transition: var(--transition);
  font-size: 0.8125rem;
}
.src-link:hover { color: var(--color-accent); border-color: var(--color-accent); }
.src-none { color: var(--color-text-faint); font-style: italic; font-size: 0.8125rem; }
.dose-none { color: var(--color-text-faint); }

.tier-pill {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border: 1px solid var(--color-border);
  font-size: 0.6875rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-weight: 500;
  font-family: "JetBrains Mono", monospace;
  white-space: nowrap;
}
.tier-approved    { color: #7fc4a6; border-color: rgba(127, 196, 166, 0.4); background: rgba(127, 196, 166, 0.08); }
.tier-clinical    { color: #d4b26a; border-color: rgba(212, 178, 106, 0.4); background: rgba(212, 178, 106, 0.08); }
.tier-limited     { color: #a79370; border-color: rgba(167, 147, 112, 0.4); background: rgba(167, 147, 112, 0.06); }
.tier-preclinical { color: var(--color-text-muted); }
.tier-unverified  { color: #c98b8b; border-color: rgba(201, 139, 139, 0.4); background: rgba(201, 139, 139, 0.08); }
.tier-none        { color: var(--color-text-faint); }

.empty-row {
  padding: var(--space-8) var(--space-4);
  text-align: center;
  color: var(--color-text-muted);
  font-style: italic;
}

.chart-footnote {
  margin-top: var(--space-4);
  color: var(--color-text-faint);
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
}

@media (max-width: 720px) {
  .chart-hero { padding-top: var(--space-8); }
  .chart-controls { flex-direction: column; align-items: stretch; }
  .chart-search { max-width: 100%; }
  .chart-meta { margin-left: 0; }
}

/* =====================================================================
   BLOCK 3 — Two-step calculator upgrade
===================================================================== */
.calc-shell {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: var(--space-10);
  align-items: start;
}
@media (max-width: 900px) {
  .calc-shell { grid-template-columns: 1fr; gap: var(--space-6); }
}

.calc-steps {
  list-style: none;
  margin: 0;
  padding: var(--space-4) 0 0 0;
  border-top: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}
.calc-steps li {
  display: flex;
  gap: var(--space-3);
  align-items: baseline;
  padding: var(--space-2) 0;
  border-bottom: 1px solid var(--color-divider);
}
.calc-steps li:last-child { border-bottom: 0; }
.calc-steps .step-num {
  color: var(--color-text-faint);
  font-variant-numeric: tabular-nums;
}
.calc-steps li.is-current { color: var(--color-text); }
.calc-steps li.is-current .step-num { color: var(--color-accent); }
@media (max-width: 900px) {
  .calc-steps {
    flex-direction: row;
    border-top: 0;
    padding-top: 0;
    justify-content: flex-start;
    gap: var(--space-4);
  }
  .calc-steps li { border: 0; padding: 0; }
}

.calc-step {
  border: 0;
  padding: 0;
  margin: 0 0 var(--space-6) 0;
}
.calc-step-title {
  display: block;
  font-family: ui-monospace, 'JetBrains Mono', monospace;
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  padding-bottom: var(--space-3);
  margin-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-divider);
  width: 100%;
}

.calc-grid {
  display: block; /* override old grid so steps stack cleanly */
}
.calc-step .field + .field { margin-top: var(--space-4); }
.field-hint {
  margin: var(--space-2) 0 0 0;
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  letter-spacing: 0.02em;
}

.calc-readout {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--space-4);
  padding: var(--space-4);
  margin-top: var(--space-5);
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
}
.readout-key {
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}
.readout-val {
  font-size: var(--text-lg);
  color: var(--color-text);
  font-variant-numeric: tabular-nums;
  text-align: right;
}

.calc-readout-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr 1fr;
  gap: 1px;
  margin-top: var(--space-5);
  background: var(--color-border);
  border: 1px solid var(--color-border);
}
@media (max-width: 640px) {
  .calc-readout-grid { grid-template-columns: 1fr; }
}
.readout-cell {
  background: var(--color-surface-2);
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.readout-cell-lg { background: var(--color-surface); }
.readout-val-hero {
  font-size: var(--text-2xl);
  color: var(--color-accent);
  font-weight: 500;
  line-height: 1;
}

.calc-actions {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
  padding-top: var(--space-5);
  border-top: 1px solid var(--color-divider);
  margin-top: var(--space-6);
}
.calc-actions .btn { flex: 0 0 auto; }
.btn-quiet { color: var(--color-text-muted); }
.btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.syringe-figure {
  margin: var(--space-6) 0 0 0;
  padding: var(--space-5) var(--space-4);
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
}
.syringe-svg {
  width: 100%;
  height: auto;
  display: block;
}
.syringe-caption {
  margin: var(--space-4) 0 0 0;
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  letter-spacing: 0.02em;
  text-align: center;
}

/* =====================================================================
   BLOCK 4 — Protocol pages
===================================================================== */
.protocol-breadcrumb {
  padding-top: var(--space-6);
  padding-bottom: var(--space-2);
  font-size: var(--text-xs);
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
}
.protocol-breadcrumb a {
  color: var(--color-text-muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}
.protocol-breadcrumb a:hover { color: var(--color-text); border-bottom-color: var(--color-divider); }
.protocol-breadcrumb [aria-current="page"] { color: var(--color-text); }
.crumb-sep { color: var(--color-text-faint); }

.protocol-head {
  padding-top: var(--space-4);
  padding-bottom: var(--space-8);
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--space-8);
}
.protocol-title {
  font-family: var(--font-display, 'Cabinet Grotesk', 'Satoshi', system-ui, sans-serif);
  font-size: clamp(2.25rem, 5vw, 3.5rem);
  line-height: 1.02;
  letter-spacing: -0.02em;
  margin: 0 0 var(--space-2) 0;
  color: var(--color-text);
}
.protocol-aka {
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin: 0 0 var(--space-6) 0;
}
.protocol-badges {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 1px;
  background: var(--color-border);
  border: 1px solid var(--color-border);
}
.protocol-badges .badge {
  background: var(--color-surface-2);
  padding: var(--space-3) var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  flex: 1 1 160px;
  min-width: 140px;
}
.badge-key {
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}
.badge-val {
  font-size: var(--text-sm);
  color: var(--color-text);
}
.protocol-badges .tier { align-self: flex-start; }

.protocol-section {
  padding-top: var(--space-10);
  padding-bottom: var(--space-10);
  border-bottom: 1px solid var(--color-divider);
}
.protocol-section:last-of-type { border-bottom: 0; }
.protocol-section-head { margin-bottom: var(--space-6); }
.protocol-section-title {
  font-family: var(--font-display, 'Cabinet Grotesk', 'Satoshi', system-ui, sans-serif);
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  line-height: 1.1;
  letter-spacing: -0.01em;
  margin: var(--space-2) 0 0 0;
  color: var(--color-text);
}
.protocol-lead {
  margin-top: var(--space-3);
  color: var(--color-text-muted);
  max-width: 62ch;
  line-height: 1.55;
}

/* Dose schedule table */
.dose-schedule { margin-bottom: var(--space-8); }
.dose-schedule-title {
  font-size: var(--text-sm);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text);
  margin: 0 0 var(--space-3) 0;
  padding-bottom: var(--space-2);
  border-bottom: 1px solid var(--color-divider);
  font-family: ui-monospace, 'JetBrains Mono', monospace;
  font-weight: 500;
}
.dose-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--text-sm);
}
.dose-table th, .dose-table td {
  padding: var(--space-3) var(--space-4);
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--color-divider);
}
.dose-table thead th {
  font-family: ui-monospace, 'JetBrains Mono', monospace;
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  font-weight: 500;
  background: var(--color-surface-2);
}
.dose-table tbody tr:last-child td { border-bottom: 0; }
.dose-table td.mono { color: var(--color-text-muted); white-space: nowrap; width: 30%; }

.dose-source {
  margin-top: var(--space-3);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  letter-spacing: 0.02em;
}
.dose-source a {
  color: var(--color-accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}
.dose-source a:hover { border-bottom-color: var(--color-accent); }

.protocol-facts {
  display: grid;
  gap: 1px;
  background: var(--color-border);
  border: 1px solid var(--color-border);
  margin: var(--space-6) 0 0 0;
  padding: 0;
}
.protocol-facts .fact {
  background: var(--color-surface-2);
  padding: var(--space-4);
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: var(--space-4);
  align-items: baseline;
  margin: 0;
}
@media (max-width: 640px) {
  .protocol-facts .fact { grid-template-columns: 1fr; gap: var(--space-2); }
}
.protocol-facts dt {
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin: 0;
}
.protocol-facts dd {
  margin: 0;
  color: var(--color-text);
  font-size: var(--text-sm);
  line-height: 1.5;
}

/* Reconstitution card */
.recon-card {
  border: 1px solid var(--color-border);
  background: var(--color-surface-2);
  padding: var(--space-2) var(--space-4);
  max-width: 640px;
}
.recon-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-divider);
  gap: var(--space-4);
}
.recon-row:last-child { border-bottom: 0; }
.recon-key {
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}
.recon-val {
  font-size: var(--text-sm);
  color: var(--color-text);
  text-align: right;
}
.recon-row-out .recon-val {
  color: var(--color-accent);
  font-size: var(--text-base);
}
.recon-cta {
  margin-top: var(--space-5);
}

/* Overview prose */
.protocol-prose {
  max-width: 68ch;
}
.protocol-prose p {
  margin: 0 0 var(--space-4) 0;
  color: var(--color-text);
  line-height: 1.6;
}
.protocol-prose p:last-child { margin-bottom: 0; }

/* References */
.reference-list {
  margin: 0;
  padding: 0 0 0 var(--space-5);
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  line-height: 1.55;
}
.reference-list li { margin-bottom: var(--space-3); }
.reference-list a {
  color: var(--color-text);
  text-decoration: none;
  border-bottom: 1px solid var(--color-divider);
}
.reference-list a:hover {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

/* Source indication line under dose tables */
.dose-indication {
  margin: var(--space-4) 0 var(--space-8);
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface-2);
  border-left: 2px solid var(--color-divider);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  letter-spacing: 0.03em;
  line-height: 1.55;
}
.dose-indication .indication-key {
  color: var(--color-text-faint);
  text-transform: uppercase;
  margin-right: var(--space-1);
}
.protocol-aka {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin: var(--space-2) 0 0;
}

/* -------------------------------------------------------------------------- */
/*  Product page — vial specs card + reserve CTA (Block 6)                     */
/* -------------------------------------------------------------------------- */
.product-buybox {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-8);
  border: 1px solid var(--color-border);
  padding: var(--space-6);
  background: var(--color-surface);
  margin-top: var(--space-6);
}
@media (max-width: 720px) {
  .product-buybox { grid-template-columns: 1fr; gap: var(--space-4); }
}
.buybox-specs {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: var(--space-2) var(--space-4);
  align-items: baseline;
}
.buybox-specs dt {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}
.buybox-specs dd {
  margin: 0;
  font-size: var(--text-sm);
  color: var(--color-text);
}
.buybox-cta {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  border-left: 1px solid var(--color-divider);
  padding-left: var(--space-8);
}
@media (max-width: 720px) {
  .buybox-cta { border-left: none; padding-left: 0; border-top: 1px solid var(--color-divider); padding-top: var(--space-4); }
}
.stock-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #7fc4a6;
}
.stock-badge::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #7fc4a6;
  display: inline-block;
}
.size-picker {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}
.size-picker label {
  border: 1px solid var(--color-border);
  padding: var(--space-2) var(--space-3);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  cursor: pointer;
  transition: var(--transition);
}
.size-picker input:checked + label {
  background: var(--color-text);
  color: var(--color-bg);
  border-color: var(--color-text);
}
.size-picker input { position: absolute; opacity: 0; pointer-events: none; }
.buybox-price {
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  color: var(--color-text);
}
.buybox-price-note {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}
.btn-reserve {
  padding: var(--space-4) var(--space-6);
  border: none;
  background: var(--color-text);
  color: var(--color-bg);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  cursor: pointer;
  transition: var(--transition);
  text-align: center;
  text-decoration: none;
  display: inline-block;
}
.btn-reserve:hover { opacity: 0.85; }
.rux-notice {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  letter-spacing: 0.06em;
  border-top: 1px solid var(--color-divider);
  padding-top: var(--space-3);
  margin-top: var(--space-2);
}

/* -------------------------------------------------------------------------- */
/*  Reservation form (Block 6c)                                                */
/* -------------------------------------------------------------------------- */
.reserve-form { margin-top: var(--space-6); }
.rf-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-5);
}
@media (max-width: 720px) {
  .rf-grid { grid-template-columns: 1fr; gap: var(--space-4); }
}
.rf-field { display: flex; flex-direction: column; gap: var(--space-2); }
.rf-field-wide { grid-column: 1 / -1; }
.rf-key {
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}
.rf-field input,
.rf-field select,
.rf-field textarea {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  border-radius: 0;
  transition: var(--transition);
  width: 100%;
}
.rf-field input:focus,
.rf-field select:focus,
.rf-field textarea:focus {
  outline: none;
  border-color: var(--color-text);
}
.rf-field textarea { resize: vertical; min-height: 3rem; font-family: inherit; }
.rf-attest {
  margin-top: var(--space-6);
  padding: var(--space-5);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
}
.rf-attest legend {
  padding: 0 var(--space-3);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}
.rf-check {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-2) 0;
  font-size: var(--text-sm);
  cursor: pointer;
}
.rf-check input[type=checkbox] {
  margin-top: 0.25em;
  width: 1rem;
  height: 1rem;
  accent-color: var(--color-text);
  cursor: pointer;
  flex-shrink: 0;
}
.rf-check a { color: var(--color-text); text-decoration: underline; }
.rf-actions {
  margin-top: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  align-items: flex-start;
}
.rf-success {
  padding: var(--space-8);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  margin-top: var(--space-6);
  text-align: left;
}
.rf-success h3 {
  margin: 0 0 var(--space-3);
  font-size: var(--text-xl);
}
.rf-success p {
  margin: 0 0 var(--space-4);
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

/* Nav header IN STOCK badge (Block 6) */
.nav-stock {
  padding: var(--space-1) var(--space-2);
  border: 1px solid rgba(127, 196, 166, 0.4);
  border-radius: 0;
  font-size: 10px;
  letter-spacing: 0.12em;
  white-space: nowrap;
  line-height: 1;
}
@media (max-width: 980px) {
  .nav-stock { display: none; }
}

/* -------------------------------------------------------------------------- */
/*  Age + research-use gate (Block 6)                                          */
/* -------------------------------------------------------------------------- */
#age-gate {
  position: fixed;
  inset: 0;
  z-index: 99999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-6);
  background: var(--color-bg);
}
#age-gate .ag-card {
  width: 100%;
  max-width: 460px;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  padding: var(--space-10) var(--space-8) var(--space-8);
  text-align: center;
}
#age-gate .ag-logo { margin-bottom: var(--space-3); display: flex; justify-content: center; }
#age-gate .ag-logo-img { height: 26px; width: auto; display: block; }
[data-theme='dark'] #age-gate .ag-logo-img { filter: invert(1); }
#age-gate .ag-sub {
  margin: 0 0 var(--space-5);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}
#age-gate .ag-body {
  margin: 0 0 var(--space-3);
  font-size: var(--text-sm);
  line-height: 1.6;
  color: var(--color-text-muted);
}
#age-gate .ag-checks {
  text-align: left;
  margin: var(--space-5) 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
#age-gate .ag-check {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  font-size: var(--text-xs);
  line-height: 1.5;
  color: var(--color-text-muted);
  cursor: pointer;
}
#age-gate .ag-check input[type=checkbox] {
  margin-top: 0.2em;
  width: 1rem;
  height: 1rem;
  accent-color: var(--color-text);
  cursor: pointer;
  flex-shrink: 0;
}
#age-gate .ag-check input[type=checkbox]:focus-visible {
  outline: 2px solid var(--color-text-muted);
  outline-offset: 2px;
}
#age-gate .ag-enter {
  width: 100%;
  padding: var(--space-4) var(--space-6);
  border: none;
  background: var(--color-text);
  color: var(--color-bg);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  cursor: pointer;
  transition: var(--transition);
  margin-bottom: var(--space-3);
}
#age-gate .ag-enter:hover:not(:disabled) { opacity: 0.85; }
#age-gate .ag-enter:disabled {
  background: transparent;
  color: var(--color-text-faint);
  border: 1px solid var(--color-border);
  cursor: not-allowed;
}
#age-gate .ag-exit {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  text-decoration: underline;
  margin-bottom: var(--space-5);
}
#age-gate .ag-foot {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--color-text-faint);
  border-top: 1px solid var(--color-divider);
  padding-top: var(--space-4);
}

/* Chart "Reserve" link for sellable peptides */
.reserve-link {
  display: inline-block;
  margin-left: var(--space-2);
  padding: 1px var(--space-2);
  border: 1px solid rgba(127, 196, 166, 0.5);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #7fc4a6;
  text-decoration: none;
  white-space: nowrap;
  vertical-align: middle;
  transition: var(--transition);
}
.reserve-link:hover {
  background: rgba(127, 196, 166, 0.12);
  border-color: #7fc4a6;
}

/* Legal pages (Terms, Privacy) */
.legal-body { max-width: 760px; }
.legal-body .legal-intro {
  font-size: var(--text-lg);
  color: var(--color-text);
  line-height: 1.6;
  margin: 0 0 var(--space-8);
  padding-bottom: var(--space-6);
  border-bottom: 1px solid var(--color-divider);
}
.legal-body h2 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  margin: var(--space-8) 0 var(--space-2);
  color: var(--color-text);
}
.legal-body h2:first-of-type { margin-top: 0; }
.legal-body p {
  font-size: var(--text-base);
  line-height: 1.7;
  color: var(--color-text-muted);
  margin: 0 0 var(--space-4);
}
.legal-body a { color: var(--color-accent); text-decoration: underline; text-underline-offset: 2px; }
.legal-body strong { color: var(--color-text); font-weight: 600; }