/* ============================================================
   QuantHealth — qnth.css
   Full-site CSS. Covers every component in design-spec.
   ============================================================ */

/* ---- Custom Properties ------------------------------------ */
:root {
  --qnth-dark: #0B1629;
  --qnth-dark-alt: #111F35;
  --qnth-teal: #00C2A8;
  --qnth-amber: #F5A623;
  --qnth-steel: #8BA4C0;
  --qnth-light: #F0F4F9;
  --qnth-light-alt: #E8EFF8;
  --qnth-white: #FFFFFF;

  --qnth-text-dark-primary: #E8EFF8;
  --qnth-text-dark-muted: #8BA4C0;
  --qnth-text-light-primary: #0E1C31;
  --qnth-text-light-muted: #4A6480;

  --qnth-nav-h: 64px;
  --qnth-container-max: 1200px;
  --qnth-container-pad: clamp(1rem, 4vw, 2rem);

  --qnth-font-heading: 'Newsreader', Georgia, 'Times New Roman', serif;
  --qnth-font-body: 'IBM Plex Sans', system-ui, -apple-system, sans-serif;
  --qnth-font-mono: 'JetBrains Mono', 'Courier New', monospace;

  --qnth-ease: cubic-bezier(0.4, 0, 0.2, 1);
  --qnth-dur: 200ms;
  --qnth-radius: 8px;
  --qnth-radius-lg: 16px;
}

/* ---- Reset ------------------------------------------------ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--qnth-font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--qnth-text-light-primary);
  background: var(--qnth-white);
  -webkit-font-smoothing: antialiased;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font-family: inherit; font-size: inherit; }
ul, ol { list-style: none; }

/* ---- Container -------------------------------------------- */
.qnth-container {
  max-width: var(--qnth-container-max);
  margin: 0 auto;
  padding: 0 var(--qnth-container-pad);
}

/* ---- Section Backgrounds ---------------------------------- */
.qnth-bg--dark {
  background: linear-gradient(135deg, var(--qnth-dark) 0%, var(--qnth-dark-alt) 100%);
  color: var(--qnth-text-dark-primary);
}
.qnth-bg--dark-alt {
  background: var(--qnth-dark-alt);
  color: var(--qnth-text-dark-primary);
}
.qnth-bg--light {
  background: var(--qnth-light);
  color: var(--qnth-text-light-primary);
}
.qnth-bg--light-alt {
  background: var(--qnth-light-alt);
  color: var(--qnth-text-light-primary);
}
.qnth-bg--white {
  background: var(--qnth-white);
  color: var(--qnth-text-light-primary);
}

/* ---- Typography ------------------------------------------- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--qnth-font-heading);
  line-height: 1.2;
}
.qnth-eyebrow {
  display: inline-block;
  font-family: var(--qnth-font-body);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--qnth-teal);
  margin-bottom: 0.75rem;
}
.qnth-section-label {
  font-family: var(--qnth-font-body);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--qnth-text-dark-muted);
  margin-bottom: 0.5rem;
}
.qnth-section-label--light {
  color: var(--qnth-text-light-muted);
}

/* ---- Fade-in animation ------------------------------------ */
.qnth-fade-in {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.5s var(--qnth-ease), transform 0.5s var(--qnth-ease);
}
.qnth-fade-in--visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================================
   NAV
   Always dark, fixed, glassmorphism
   ============================================================ */
.qnth-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--qnth-nav-h);
  background: rgba(11, 22, 41, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--qnth-dur) var(--qnth-ease);
}
.qnth-nav--scrolled {
  border-bottom-color: rgba(0, 194, 168, 0.25);
}
.qnth-nav__inner {
  max-width: var(--qnth-container-max);
  margin: 0 auto;
  padding: 0 var(--qnth-container-pad);
  height: 100%;
  display: flex;
  align-items: center;
  gap: 2rem;
}
.qnth-nav__logo {
  flex-shrink: 0;
  display: flex;
  align-items: center;
}
.qnth-nav__logo img {
  height: 32px;
  width: auto;
}
.qnth-nav__logo-light { display: block; }
.qnth-nav__logo-dark { display: none; }

.qnth-nav__links {
  display: flex;
  align-items: center;
  gap: 0;
  flex: 1;
}
.qnth-nav__link {
  padding: 0.5rem 0.875rem;
  font-size: 14px;
  font-weight: 500;
  color: var(--qnth-text-dark-primary);
  transition: color var(--qnth-dur) var(--qnth-ease);
  white-space: nowrap;
}
.qnth-nav__link:hover {
  color: var(--qnth-teal);
}
.qnth-nav__link--active {
  color: var(--qnth-teal);
}
.qnth-nav__right {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
}
.qnth-nav__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 40px;
  height: 40px;
  cursor: pointer;
  background: none;
  border: none;
  gap: 5px;
  padding: 8px;
}
.qnth-nav__bar {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--qnth-text-dark-primary);
  border-radius: 1px;
  transition: transform var(--qnth-dur) var(--qnth-ease), opacity var(--qnth-dur) var(--qnth-ease);
}
.qnth-nav__hamburger[aria-expanded="true"] .qnth-nav__bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.qnth-nav__hamburger[aria-expanded="true"] .qnth-nav__bar:nth-child(2) {
  opacity: 0;
}
.qnth-nav__hamburger[aria-expanded="true"] .qnth-nav__bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.qnth-nav__mobile-menu {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s var(--qnth-ease);
  position: fixed;
  top: var(--qnth-nav-h);
  left: 0;
  right: 0;
  background: var(--qnth-dark);
  z-index: 99;
  border-bottom: 1px solid rgba(0,194,168,0.15);
}
.qnth-nav__mobile-menu--open {
  max-height: 400px;
}
.qnth-nav__mobile-links {
  padding: 1rem var(--qnth-container-pad) 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0;
}
.qnth-nav__mobile-link {
  padding: 0.75rem 0;
  font-size: 15px;
  font-weight: 500;
  color: var(--qnth-text-dark-primary);
  border-bottom: 1px solid rgba(139,164,192,0.15);
  transition: color var(--qnth-dur) var(--qnth-ease);
}
.qnth-nav__mobile-link:hover {
  color: var(--qnth-teal);
}
.qnth-nav__mobile-cta {
  margin-top: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

/* ============================================================
   BUTTONS
   ============================================================ */
.qnth-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.625rem 1.375rem;
  font-family: var(--qnth-font-body);
  font-size: 14px;
  font-weight: 600;
  border-radius: var(--qnth-radius);
  border: 1.5px solid transparent;
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
  transition: background var(--qnth-dur) var(--qnth-ease),
              color var(--qnth-dur) var(--qnth-ease),
              border-color var(--qnth-dur) var(--qnth-ease),
              box-shadow var(--qnth-dur) var(--qnth-ease);
  line-height: 1;
}
.qnth-btn--lg {
  padding: 0.75rem 1.75rem;
  font-size: 15px;
}
.qnth-btn--primary {
  background: var(--qnth-teal);
  color: var(--qnth-text-light-primary);
  border-color: var(--qnth-teal);
}
.qnth-btn--primary:hover {
  background: #00d9bc;
  border-color: #00d9bc;
}
.qnth-btn--outline-teal {
  background: transparent;
  color: #005F52;
  border-color: #005F52;
}
.qnth-btn--outline-teal:hover {
  background: rgba(0,95,82,0.08);
}
.qnth-btn--ghost-on-dark {
  background: transparent;
  color: var(--qnth-text-dark-primary);
  border-color: rgba(232,239,248,0.4);
}
.qnth-btn--ghost-on-dark:hover {
  background: rgba(232,239,248,0.08);
  border-color: rgba(232,239,248,0.65);
}
.qnth-btn--ghost-on-light {
  background: transparent;
  color: var(--qnth-text-light-primary);
  border-color: rgba(14,28,49,0.3);
}
.qnth-btn--ghost-on-light:hover {
  background: rgba(14,28,49,0.05);
}

/* ============================================================
   HOME HERO
   Two-column, dark gradient, inline SVG
   ============================================================ */
.qnth-home-hero {
  min-height: 95vh;
  display: flex;
  align-items: center;
  padding-top: var(--qnth-nav-h);
  background: linear-gradient(135deg, var(--qnth-dark) 0%, var(--qnth-dark-alt) 60%, var(--qnth-dark) 100%);
  overflow: hidden;
}
.qnth-home-hero__inner {
  max-width: var(--qnth-container-max);
  margin: 0 auto;
  padding: 5rem var(--qnth-container-pad);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  width: 100%;
}
.qnth-home-hero__text {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}
.qnth-home-hero__h1 {
  font-family: var(--qnth-font-heading);
  font-size: clamp(2rem, 4vw, 3.25rem);
  font-weight: 700;
  color: var(--qnth-text-dark-primary);
  line-height: 1.15;
  margin-bottom: 1.25rem;
  letter-spacing: -0.02em;
}
.qnth-home-hero__sub {
  font-size: clamp(1rem, 1.4vw, 1.125rem);
  color: var(--qnth-text-dark-muted);
  line-height: 1.7;
  margin-bottom: 2rem;
  max-width: 44ch;
}
.qnth-home-hero__cta-group {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}
.qnth-home-hero__visual {
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: visible;
}
.qnth-hero-svg {
  width: 100%;
  max-width: 560px;
  height: auto;
  overflow: visible;
}

.qnth-home-hero--with-bg {
  position: relative;
  background: url('../images/hero-bg.webp') center/cover no-repeat;
  background-color: var(--qnth-dark);
}
.qnth-home-hero__scrim {
  position: absolute;
  inset: 0;
  z-index: 0;
  background: linear-gradient(135deg, rgba(11,22,41,0.72) 0%, rgba(17,31,53,0.80) 60%, rgba(11,22,41,0.88) 100%);
}
.qnth-home-hero--with-bg .qnth-home-hero__inner {
  position: relative;
  z-index: 1;
}

/* ============================================================
   SUBPAGE HERO
   Two types:
   --dark  = 52vh two-column left-aligned + glassmorphic context card
   --light = slim left-aligned auto-height + teal bottom border
   ============================================================ */
.qnth-subhero {
  padding-top: var(--qnth-nav-h);
}
.qnth-subhero--dark {
  background: linear-gradient(135deg, var(--qnth-dark) 0%, var(--qnth-dark-alt) 100%);
  color: var(--qnth-text-dark-primary);
  min-height: 52vh;
  display: flex;
  align-items: center;
  border-bottom: 1px solid rgba(0,194,168,0.15);
}
.qnth-subhero--light {
  background: var(--qnth-light);
  color: var(--qnth-text-light-primary);
  min-height: 180px;
  display: flex;
  align-items: center;
  border-bottom: 3px solid rgba(0,194,168,0.5);
}
.qnth-subhero__inner {
  max-width: var(--qnth-container-max);
  margin: 0 auto;
  padding: 4rem var(--qnth-container-pad);
  width: 100%;
}
.qnth-subhero__cols {
  display: grid;
  grid-template-columns: 55% 40%;
  gap: 5%;
  align-items: center;
}
.qnth-subhero__eyebrow-row {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  margin-bottom: 0.75rem;
}
.qnth-subhero__chevron {
  color: var(--qnth-teal);
  font-family: var(--qnth-font-mono);
  font-size: 11px;
  line-height: 1;
}
.qnth-subhero__eyebrow {
  display: inline-block;
  font-family: var(--qnth-font-mono);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--qnth-teal);
}
.qnth-subhero--light .qnth-subhero__eyebrow {
  margin-bottom: 0.75rem;
}
.qnth-subhero__h1 {
  font-family: var(--qnth-font-heading);
  font-size: clamp(1.75rem, 3.5vw, 2.875rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}
.qnth-subhero--dark .qnth-subhero__h1 {
  color: var(--qnth-text-dark-primary);
}
.qnth-subhero--light .qnth-subhero__h1 {
  color: var(--qnth-text-light-primary);
  max-width: 760px;
}
.qnth-subhero__sub {
  font-size: 1.0625rem;
  line-height: 1.65;
}
.qnth-subhero--dark .qnth-subhero__sub {
  color: var(--qnth-text-dark-muted);
}
.qnth-subhero--light .qnth-subhero__sub {
  color: var(--qnth-text-light-muted);
  max-width: 600px;
}
.qnth-subhero__glass {
  background: rgba(0, 194, 168, 0.06);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(0, 194, 168, 0.25);
  border-radius: 8px;
  padding: 1.5rem;
}
.qnth-subhero__glass-key {
  font-family: var(--qnth-font-mono);
  font-size: 13px;
  color: var(--qnth-teal);
  margin-bottom: 0.5rem;
  line-height: 1.4;
}
.qnth-subhero__glass-desc {
  font-family: var(--qnth-font-body);
  font-size: 12px;
  color: var(--qnth-text-dark-muted);
  line-height: 1.5;
}

/* ============================================================
   ARTICLE HEADER (research article pages)
   Clean centered on light-alt bg
   ============================================================ */
.qnth-article-header {
  padding-top: var(--qnth-nav-h);
  background: var(--qnth-light-alt);
  padding-bottom: 0;
}
.qnth-article-header__inner {
  max-width: var(--qnth-container-max);
  margin: 0 auto;
  padding: 3.5rem var(--qnth-container-pad) 2.5rem;
  text-align: center;
}
.qnth-article-header__meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 1.25rem;
}
.qnth-article-header__date {
  font-family: var(--qnth-font-mono);
  font-size: 12px;
  color: var(--qnth-text-light-muted);
  letter-spacing: 0.04em;
}
.qnth-article-header__tag {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--qnth-teal);
}
.qnth-article-header__h1 {
  font-family: var(--qnth-font-heading);
  font-size: clamp(1.75rem, 3.5vw, 2.625rem);
  font-weight: 700;
  color: var(--qnth-text-light-primary);
  line-height: 1.2;
  letter-spacing: -0.02em;
  max-width: 800px;
  margin: 0 auto 1.25rem;
}
.qnth-article-header__byline {
  font-size: 14px;
  font-weight: 500;
  color: var(--qnth-text-light-muted);
}
.qnth-article-header__separator {
  height: 4px;
  background: var(--qnth-teal);
  max-width: 64px;
  margin: 2rem auto 0;
  border-radius: 2px;
}
.qnth-article-header--with-bg {
  position: relative;
  background-size: cover;
  background-position: center;
  background-color: var(--qnth-dark);
}
.qnth-article-header__scrim {
  position: absolute;
  inset: 0;
  z-index: 0;
  background: linear-gradient(180deg, rgba(11,22,41,0.65) 0%, rgba(11,22,41,0.80) 100%);
}
.qnth-article-header--with-bg .qnth-article-header__inner {
  position: relative;
  z-index: 1;
}
.qnth-article-header--with-bg .qnth-article-header__h1 {
  color: var(--qnth-text-dark-primary);
}
.qnth-article-header--with-bg .qnth-article-header__byline {
  color: var(--qnth-text-dark-muted);
}
.qnth-article-header--with-bg .qnth-article-header__date {
  color: var(--qnth-text-dark-muted);
}
.qnth-article-header--with-bg .qnth-article-header__tag {
  color: var(--qnth-teal);
}

.qnth-article-back {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 13px;
  font-weight: 500;
  color: var(--qnth-teal);
  padding: 1.25rem var(--qnth-container-pad);
  max-width: var(--qnth-container-max);
  margin: 0 auto;
  display: block;
}
.qnth-article-back a {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  color: var(--qnth-teal);
  font-size: 13px;
  font-weight: 500;
  transition: gap var(--qnth-dur) var(--qnth-ease);
}
.qnth-article-back a:hover { gap: 0.625rem; }
.qnth-article-back a i { font-size: 11px; }

.qnth-article-content {
  max-width: 720px;
  margin: 0 auto;
  padding: 2.5rem var(--qnth-container-pad) 4rem;
  background: var(--qnth-white);
  color: var(--qnth-text-light-primary);
}
.qnth-article-content h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 2.5rem 0 0.75rem;
  color: var(--qnth-text-light-primary);
}
.qnth-article-content h3 {
  font-size: 1.1875rem;
  font-weight: 700;
  margin: 2rem 0 0.5rem;
  color: var(--qnth-text-light-primary);
}
.qnth-article-content p {
  margin-bottom: 1.25rem;
  line-height: 1.75;
  color: var(--qnth-text-light-primary);
}
.qnth-article-content ul, .qnth-article-content ol {
  margin-bottom: 1.25rem;
  padding-left: 1.5rem;
  list-style: disc;
}
.qnth-article-content ol { list-style: decimal; }
.qnth-article-content li { margin-bottom: 0.5rem; color: var(--qnth-text-light-primary); }
.qnth-article-content a { color: var(--qnth-teal); text-decoration: underline; }
.qnth-article-cover {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 var(--qnth-container-pad);
}
.qnth-article-cover img {
  width: 100%;
  height: auto;
  aspect-ratio: 16/9;
  object-fit: cover;
  border-radius: var(--qnth-radius);
  display: block;
}

/* ============================================================
   LEGAL PAGES
   ============================================================ */
.qnth-legal-header {
  padding-top: var(--qnth-nav-h);
  background: var(--qnth-light);
  padding-bottom: 2rem;
}
.qnth-legal-header__inner {
  max-width: var(--qnth-container-max);
  margin: 0 auto;
  padding: 3rem var(--qnth-container-pad) 1rem;
}
.qnth-legal-header__h1 {
  font-family: var(--qnth-font-heading);
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 700;
  color: var(--qnth-text-light-primary);
  margin-bottom: 0.5rem;
}
.qnth-legal-header__updated {
  font-size: 13px;
  color: var(--qnth-text-light-muted);
  font-family: var(--qnth-font-mono);
}
.qnth-legal-content {
  max-width: 720px;
  margin: 0 auto;
  padding: 2.5rem var(--qnth-container-pad) 5rem;
  background: var(--qnth-white);
  color: var(--qnth-text-light-primary);
}
.qnth-legal-content h2 {
  font-size: 1.25rem;
  font-weight: 700;
  margin: 2rem 0 0.625rem;
  color: var(--qnth-text-light-primary);
}
.qnth-legal-content p {
  margin-bottom: 1rem;
  line-height: 1.75;
  color: var(--qnth-text-light-primary);
}
.qnth-legal-content ul {
  margin-bottom: 1rem;
  padding-left: 1.5rem;
  list-style: disc;
}
.qnth-legal-content li { margin-bottom: 0.4rem; color: var(--qnth-text-light-primary); }
.qnth-legal-content a { color: var(--qnth-teal); }

/* ============================================================
   AUTH PAGES
   Fullscreen light card, no nav/footer
   ============================================================ */
.qnth-auth {
  min-height: 100vh;
  background: var(--qnth-light);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem var(--qnth-container-pad);
}
.qnth-auth__logo {
  margin-bottom: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
}
.qnth-auth__logo img {
  height: 36px;
  width: auto;
}
.qnth-auth__card {
  background: var(--qnth-white);
  border-radius: var(--qnth-radius-lg);
  padding: 2.5rem 2rem;
  width: 100%;
  max-width: 440px;
  box-shadow: 0 4px 24px rgba(11,22,41,0.12);
}
.qnth-auth__title {
  font-family: var(--qnth-font-heading);
  font-size: 1.625rem;
  font-weight: 700;
  color: var(--qnth-text-light-primary);
  margin-bottom: 0.375rem;
  text-align: center;
}
.qnth-auth__subtitle {
  font-size: 14px;
  color: var(--qnth-text-light-muted);
  text-align: center;
  margin-bottom: 1.75rem;
}
.qnth-auth__form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.qnth-auth__field {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
}
.qnth-auth__label {
  font-size: 13px;
  font-weight: 500;
  color: var(--qnth-text-light-primary);
}
.qnth-auth__input,
.qnth-auth__select {
  width: 100%;
  padding: 0.625rem 0.875rem;
  border: 1.5px solid rgba(14,28,49,0.2);
  border-radius: var(--qnth-radius);
  font-size: 15px;
  color: var(--qnth-text-light-primary);
  background: var(--qnth-white);
  transition: border-color var(--qnth-dur) var(--qnth-ease),
              box-shadow var(--qnth-dur) var(--qnth-ease);
  appearance: none;
  -webkit-appearance: none;
}
.qnth-auth__input:focus,
.qnth-auth__select:focus {
  outline: none;
  border-color: var(--qnth-teal);
  box-shadow: 0 0 0 3px rgba(0,194,168,0.15);
}
.qnth-auth__input::placeholder { color: var(--qnth-text-light-muted); }
.qnth-auth__error {
  font-size: 13px;
  color: #c0392b;
  margin-top: 0.25rem;
  display: none;
}
.qnth-auth__error--visible { display: block; }
.qnth-auth__submit {
  width: 100%;
  margin-top: 0.5rem;
  padding: 0.75rem;
  background: var(--qnth-teal);
  color: var(--qnth-text-light-primary);
  border: none;
  border-radius: var(--qnth-radius);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--qnth-dur) var(--qnth-ease);
}
.qnth-auth__submit:hover { background: #00d9bc; }
.qnth-auth__links {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 1rem;
  font-size: 13px;
}
.qnth-auth__links a {
  color: var(--qnth-teal);
  font-weight: 500;
}
.qnth-auth__footer {
  margin-top: 1.5rem;
  text-align: center;
  font-size: 12px;
  color: var(--qnth-text-light-muted);
  border-top: 1px solid rgba(14,28,49,0.1);
  padding-top: 1rem;
}
.qnth-auth__footer a {
  color: var(--qnth-text-light-muted);
  text-decoration: underline;
}
.qnth-auth__divider {
  margin: 0 0.375rem;
}
.qnth-auth__confirm-view {
  display: none;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 1rem;
  padding: 1rem 0;
}
.qnth-auth__confirm-view--visible { display: flex; }
.qnth-auth__confirm-icon {
  width: 52px;
  height: 52px;
  background: rgba(0,194,168,0.15);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--qnth-teal);
  font-size: 20px;
}
.qnth-auth__confirm-title {
  font-family: var(--qnth-font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--qnth-text-light-primary);
}
.qnth-auth__confirm-body {
  font-size: 14px;
  color: var(--qnth-text-light-muted);
  line-height: 1.6;
}
.qnth-auth__form-view { display: flex; flex-direction: column; gap: 1rem; }
.qnth-auth__form-view--hidden { display: none; }

/* ============================================================
   HOME: PROBLEM SECTION
   Dark-alt, two-col (stat left, text right)
   ============================================================ */
.qnth-problem {
  padding: 5rem 0;
}
.qnth-problem__inner {
  max-width: var(--qnth-container-max);
  margin: 0 auto;
  padding: 0 var(--qnth-container-pad);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}
.qnth-problem__stats {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}
.qnth-problem__stat {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
  padding: 1.5rem;
  border: 1px solid rgba(0,194,168,0.2);
  border-radius: var(--qnth-radius);
  background: rgba(0,194,168,0.05);
}
.qnth-problem__stat-number {
  font-family: var(--qnth-font-heading);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  color: var(--qnth-teal);
  line-height: 1;
}
.qnth-problem__stat-label {
  font-size: 14px;
  color: var(--qnth-text-dark-muted);
  line-height: 1.5;
}
.qnth-problem__text {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}
.qnth-problem__h2 {
  font-family: var(--qnth-font-heading);
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  font-weight: 700;
  color: var(--qnth-text-dark-primary);
  line-height: 1.25;
}
.qnth-problem__lead {
  font-size: 1.0625rem;
  color: var(--qnth-text-dark-muted);
  line-height: 1.7;
}
.qnth-problem__causes {
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
}
.qnth-problem__cause {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  font-size: 14px;
  color: var(--qnth-text-dark-muted);
}
.qnth-problem__cause-dot {
  width: 6px;
  height: 6px;
  min-width: 6px;
  border-radius: 50%;
  background: var(--qnth-amber);
  margin-top: 0.45em;
}

/* ============================================================
   HOME: HOW IT WORKS
   Light bg, three-step cards with middle offset
   ============================================================ */
.qnth-how {
  padding: 5rem 0;
}
.qnth-how__header {
  text-align: center;
  margin-bottom: 3.5rem;
}
.qnth-how__h2 {
  font-family: var(--qnth-font-heading);
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  font-weight: 700;
  color: var(--qnth-text-light-primary);
  margin-top: 0.5rem;
}
.qnth-how__steps {
  max-width: var(--qnth-container-max);
  margin: 0 auto;
  padding: 0 var(--qnth-container-pad);
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 1.5rem;
  align-items: start;
}
.qnth-how__step {
  background: var(--qnth-white);
  border-radius: var(--qnth-radius-lg);
  padding: 2rem 1.75rem;
  border: 1px solid rgba(14,28,49,0.08);
  box-shadow: 0 2px 12px rgba(14,28,49,0.06);
  transition: box-shadow 0.3s var(--qnth-ease);
}
.qnth-how__step:hover {
  box-shadow: 0 6px 24px rgba(14,28,49,0.1);
}
.qnth-how__step--offset {
  margin-top: 2rem;
}
.qnth-how__step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--qnth-teal);
  color: var(--qnth-text-light-primary);
  border-radius: 50%;
  font-size: 16px;
  font-weight: 700;
  font-family: var(--qnth-font-body);
  margin-bottom: 1.25rem;
}
.qnth-how__step-title {
  font-family: var(--qnth-font-heading);
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--qnth-text-light-primary);
  margin-bottom: 0.75rem;
}
.qnth-how__step-body {
  font-size: 14px;
  color: var(--qnth-text-light-muted);
  line-height: 1.65;
}

/* ============================================================
   HOME: PROOF STRIP
   Dark bg, three metric callouts horizontal
   ============================================================ */
.qnth-proof {
  padding: 4.5rem 0;
}
.qnth-proof__strip {
  max-width: var(--qnth-container-max);
  margin: 0 auto;
  padding: 0 var(--qnth-container-pad);
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 2rem;
}
.qnth-proof__metric {
  text-align: center;
  padding: 2rem 1.5rem;
  border: 1px solid rgba(0,194,168,0.15);
  border-radius: var(--qnth-radius);
}
.qnth-proof__metric-value {
  font-family: var(--qnth-font-heading);
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  font-weight: 700;
  color: var(--qnth-teal);
  line-height: 1.2;
  margin-bottom: 0.625rem;
}
.qnth-proof__metric-desc {
  font-size: 14px;
  color: var(--qnth-text-dark-muted);
  line-height: 1.6;
}
.qnth-proof__source-note {
  font-size: 11px;
  color: var(--qnth-text-dark-muted);
  opacity: 0.6;
  margin-top: 0.5rem;
  font-style: italic;
}

/* ============================================================
   HOME: USE CASES PREVIEW
   Light-alt, three cards with alternating vertical offset
   ============================================================ */
.qnth-usecases-preview {
  padding: 5rem 0;
}
.qnth-usecases-preview__header {
  text-align: center;
  margin-bottom: 3rem;
}
.qnth-usecases-preview__h2 {
  font-family: var(--qnth-font-heading);
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  font-weight: 700;
  color: var(--qnth-text-light-primary);
  margin-top: 0.5rem;
}
.qnth-usecases-preview__cards {
  max-width: var(--qnth-container-max);
  margin: 0 auto;
  padding: 0 var(--qnth-container-pad);
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 1.5rem;
  align-items: start;
}
.qnth-uc-card {
  background: var(--qnth-white);
  border-radius: var(--qnth-radius-lg);
  padding: 2rem 1.75rem;
  border: 1px solid rgba(14,28,49,0.08);
  box-shadow: 0 2px 10px rgba(14,28,49,0.05);
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
  transition: box-shadow 0.3s var(--qnth-ease), transform 0.3s var(--qnth-ease);
}
.qnth-uc-card:hover {
  box-shadow: 0 8px 28px rgba(14,28,49,0.1);
  transform: translateY(-2px);
}
.qnth-uc-card--offset {
  margin-top: 2rem;
}
.qnth-uc-card__icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,194,168,0.1);
  border-radius: var(--qnth-radius);
  color: var(--qnth-teal);
  font-size: 18px;
}
.qnth-uc-card__title {
  font-family: var(--qnth-font-heading);
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--qnth-text-light-primary);
}
.qnth-uc-card__body {
  font-size: 14px;
  color: var(--qnth-text-light-muted);
  line-height: 1.65;
  flex: 1;
}
.qnth-uc-card__link {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  font-size: 13px;
  font-weight: 600;
  color: #007A6A;
  margin-top: 0.25rem;
  transition: gap var(--qnth-dur) var(--qnth-ease);
}
.qnth-uc-card__link:hover { gap: 0.625rem; }
.qnth-uc-card__link i { font-size: 11px; }

/* ============================================================
   HOME: TESTIMONIAL
   Dark-alt, centered large-format quote
   ============================================================ */
.qnth-testimonial {
  padding: 5.5rem 0;
}
.qnth-testimonial__inner {
  max-width: var(--qnth-container-max);
  margin: 0 auto;
  padding: 0 var(--qnth-container-pad);
  text-align: center;
  max-width: 820px;
}
.qnth-testimonial__quote-mark {
  font-family: var(--qnth-font-heading);
  font-size: 5rem;
  line-height: 0.6;
  color: var(--qnth-teal);
  opacity: 0.4;
  margin-bottom: 1rem;
  display: block;
}
.qnth-testimonial__text {
  font-family: var(--qnth-font-heading);
  font-size: clamp(1.25rem, 2vw, 1.625rem);
  font-weight: 300;
  color: var(--qnth-text-dark-primary);
  line-height: 1.55;
  margin-bottom: 2rem;
}
.qnth-testimonial__text em {
  color: var(--qnth-teal);
  font-style: normal;
}
.qnth-testimonial__attr {
  font-size: 14px;
  color: var(--qnth-text-dark-muted);
}
.qnth-testimonial__attr strong {
  color: var(--qnth-text-dark-primary);
  font-weight: 600;
}

/* ============================================================
   HOME: CLOSING CTA
   Dark bg with radial teal gradient
   ============================================================ */
.qnth-closing-cta {
  padding: 6rem 0;
  position: relative;
  overflow: hidden;
}
.qnth-closing-cta::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 600px;
  height: 400px;
  background: radial-gradient(ellipse at center, rgba(0,194,168,0.15) 0%, transparent 70%);
  pointer-events: none;
}
.qnth-closing-cta__inner {
  max-width: var(--qnth-container-max);
  margin: 0 auto;
  padding: 0 var(--qnth-container-pad);
  text-align: center;
  position: relative;
  z-index: 1;
}
.qnth-closing-cta__h2 {
  font-family: var(--qnth-font-heading);
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 700;
  color: var(--qnth-text-dark-primary);
  margin-bottom: 1rem;
}
.qnth-closing-cta__body {
  font-size: 1.0625rem;
  color: var(--qnth-text-dark-muted);
  line-height: 1.7;
  max-width: 520px;
  margin: 0 auto 2rem;
}
.qnth-closing-cta__btns {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

/* ============================================================
   GENERIC SECTION HEADER (shared across content pages)
   ============================================================ */
.qnth-section {
  padding: 5rem 0;
}
.qnth-section--sm { padding: 3.5rem 0; }
.qnth-section--lg { padding: 7rem 0; }

.qnth-section-header {
  text-align: center;
  margin-bottom: 3rem;
}
.qnth-section-header--left { text-align: left; }
.qnth-section-h2 {
  font-family: var(--qnth-font-heading);
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  font-weight: 700;
  line-height: 1.2;
  margin-top: 0.5rem;
}
.qnth-bg--dark .qnth-section-h2,
.qnth-bg--dark-alt .qnth-section-h2 {
  color: var(--qnth-text-dark-primary);
}
.qnth-bg--light .qnth-section-h2,
.qnth-bg--light-alt .qnth-section-h2,
.qnth-bg--white .qnth-section-h2 {
  color: var(--qnth-text-light-primary);
}
.qnth-section-sub {
  font-size: 1.0625rem;
  line-height: 1.65;
  max-width: 600px;
  margin: 0.75rem auto 0;
}
.qnth-bg--dark .qnth-section-sub,
.qnth-bg--dark-alt .qnth-section-sub {
  color: var(--qnth-text-dark-muted);
}
.qnth-bg--light .qnth-section-sub,
.qnth-bg--light-alt .qnth-section-sub,
.qnth-bg--white .qnth-section-sub {
  color: var(--qnth-text-light-muted);
}

/* ============================================================
   TWO-COLUMN LAYOUT (used across multiple pages)
   ============================================================ */
.qnth-two-col {
  max-width: var(--qnth-container-max);
  margin: 0 auto;
  padding: 0 var(--qnth-container-pad);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}
.qnth-two-col--wide-left { grid-template-columns: 3fr 2fr; }
.qnth-two-col--wide-right { grid-template-columns: 2fr 3fr; }
.qnth-two-col--offset { align-items: start; }
.qnth-two-col__text {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}
.qnth-two-col__h2 {
  font-family: var(--qnth-font-heading);
  font-size: clamp(1.375rem, 2.2vw, 1.875rem);
  font-weight: 700;
  line-height: 1.25;
}
.qnth-bg--dark .qnth-two-col__h2,
.qnth-bg--dark-alt .qnth-two-col__h2 {
  color: var(--qnth-text-dark-primary);
}
.qnth-bg--light .qnth-two-col__h2,
.qnth-bg--light-alt .qnth-two-col__h2,
.qnth-bg--white .qnth-two-col__h2 {
  color: var(--qnth-text-light-primary);
}
.qnth-two-col__body {
  font-size: 1rem;
  line-height: 1.75;
}
.qnth-bg--dark .qnth-two-col__body,
.qnth-bg--dark-alt .qnth-two-col__body {
  color: var(--qnth-text-dark-muted);
}
.qnth-bg--light .qnth-two-col__body,
.qnth-bg--light-alt .qnth-two-col__body,
.qnth-bg--white .qnth-two-col__body {
  color: var(--qnth-text-light-muted);
}
.qnth-two-col__visual {
  display: flex;
  align-items: center;
  justify-content: center;
}
.qnth-two-col__visual img {
  width: 100%;
  max-width: 480px;
  height: auto;
  border-radius: var(--qnth-radius);
  object-fit: cover;
}

/* ============================================================
   CHECKLIST
   ============================================================ */
.qnth-checklist {
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
  margin-top: 0.5rem;
}
.qnth-checklist__item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  font-size: 14px;
  color: var(--qnth-text-dark-muted);
}
.qnth-checklist--light .qnth-checklist__item { color: var(--qnth-text-light-muted); }
.qnth-checklist__icon {
  color: var(--qnth-teal);
  font-size: 14px;
  margin-top: 0.1em;
  flex-shrink: 0;
}
.qnth-checklist__label {
  line-height: 1.5;
}

/* ============================================================
   PLATFORM OUTPUT MOCK
   Inline HTML/CSS mock panel
   ============================================================ */
.qnth-output-mock {
  background: var(--qnth-dark-alt);
  border-radius: var(--qnth-radius-lg);
  padding: 1.75rem;
  border: 1px solid rgba(0,194,168,0.2);
  max-width: 480px;
  width: 100%;
}
.qnth-output-mock__title {
  font-family: var(--qnth-font-mono);
  font-size: 11px;
  font-weight: 400;
  color: var(--qnth-text-dark-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 1.25rem;
}
.qnth-output-mock__bars {
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
  margin-bottom: 1.25rem;
}
.qnth-output-mock__bar-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.qnth-output-mock__bar-label {
  font-size: 12px;
  color: var(--qnth-text-dark-muted);
  width: 52px;
  flex-shrink: 0;
  font-family: var(--qnth-font-mono);
}
.qnth-output-mock__bar-track {
  flex: 1;
  height: 14px;
  background: rgba(139,164,192,0.15);
  border-radius: 7px;
  overflow: hidden;
}
.qnth-output-mock__bar-fill {
  height: 100%;
  background: var(--qnth-teal);
  border-radius: 7px;
  opacity: 0.7;
}
.qnth-output-mock__bar-fill--highlight { opacity: 1; }
.qnth-output-mock__bar-pct {
  font-size: 12px;
  color: var(--qnth-text-dark-muted);
  width: 36px;
  text-align: right;
  font-family: var(--qnth-font-mono);
}
.qnth-output-mock__recommended {
  border: 1.5px solid var(--qnth-amber);
  border-radius: var(--qnth-radius);
  padding: 0.875rem 1rem;
  margin-bottom: 1.25rem;
  background: rgba(245,166,35,0.06);
}
.qnth-output-mock__rec-label {
  font-size: 10px;
  font-weight: 600;
  color: var(--qnth-amber);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.25rem;
  font-family: var(--qnth-font-mono);
}
.qnth-output-mock__rec-text {
  font-size: 15px;
  font-weight: 700;
  color: var(--qnth-text-dark-primary);
}
.qnth-output-mock__subgroups {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.qnth-output-mock__subgroup-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12px;
  color: var(--qnth-text-dark-muted);
  font-family: var(--qnth-font-mono);
}
.qnth-output-mock__subgroup-name { font-size: 12px; }
.qnth-output-mock__subgroup-val {
  color: var(--qnth-text-dark-primary);
  font-weight: 400;
}

/* ============================================================
   WORKFLOW ICON ROW (platform page)
   ============================================================ */
.qnth-workflow {
  max-width: var(--qnth-container-max);
  margin: 0 auto;
  padding: 0 var(--qnth-container-pad);
}
.qnth-workflow__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}
.qnth-workflow__item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 0.875rem;
}
.qnth-workflow__icon {
  width: 52px;
  height: 52px;
  background: rgba(0,194,168,0.1);
  border-radius: var(--qnth-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--qnth-teal);
  font-size: 20px;
  border: 1px solid rgba(0,194,168,0.2);
}
.qnth-workflow__label {
  font-size: 13px;
  font-weight: 600;
  color: var(--qnth-text-light-primary);
}
.qnth-workflow__desc {
  font-size: 13px;
  color: var(--qnth-text-light-muted);
  line-height: 1.5;
}

/* ============================================================
   USE CASES PAGE - detailed sections
   ============================================================ */
.qnth-uc-section {
  padding: 5rem 0;
}
.qnth-uc-inner {
  max-width: var(--qnth-container-max);
  margin: 0 auto;
  padding: 0 var(--qnth-container-pad);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}
.qnth-uc-number {
  font-family: var(--qnth-font-heading);
  font-size: 4rem;
  font-weight: 700;
  color: rgba(0,194,168,0.2);
  line-height: 1;
  margin-bottom: 0.5rem;
}
.qnth-uc-h2 {
  font-family: var(--qnth-font-heading);
  font-size: clamp(1.375rem, 2.2vw, 1.875rem);
  font-weight: 700;
  line-height: 1.25;
  margin-bottom: 1rem;
}
.qnth-bg--dark-alt .qnth-uc-h2 { color: var(--qnth-text-dark-primary); }
.qnth-bg--light .qnth-uc-h2 { color: var(--qnth-text-light-primary); }
.qnth-uc-problem {
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--qnth-amber);
  margin-bottom: 0.5rem;
}
.qnth-uc-text {
  font-size: 1rem;
  line-height: 1.75;
}
.qnth-bg--dark-alt .qnth-uc-text { color: var(--qnth-text-dark-muted); }
.qnth-bg--light .qnth-uc-text { color: var(--qnth-text-light-muted); }
.qnth-uc-output-label {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--qnth-teal);
  margin-top: 1.25rem;
  margin-bottom: 0.5rem;
}
.qnth-uc-output {
  font-size: 14px;
  line-height: 1.65;
}
.qnth-bg--dark-alt .qnth-uc-output { color: var(--qnth-text-dark-muted); }
.qnth-bg--light .qnth-uc-output { color: var(--qnth-text-light-muted); }

.qnth-therapeutic-strip {
  padding: 4rem 0;
}
.qnth-therapeutic-inner {
  max-width: var(--qnth-container-max);
  margin: 0 auto;
  padding: 0 var(--qnth-container-pad);
}
.qnth-therapeutic-h2 {
  font-family: var(--qnth-font-heading);
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--qnth-text-dark-primary);
  margin-bottom: 1.5rem;
}
.qnth-therapeutic-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}
.qnth-therapeutic-tag {
  display: inline-flex;
  flex-direction: column;
  padding: 0.875rem 1.25rem;
  background: rgba(0,194,168,0.08);
  border: 1px solid rgba(0,194,168,0.25);
  border-radius: var(--qnth-radius);
  gap: 0.25rem;
}
.qnth-therapeutic-tag__name {
  font-size: 14px;
  font-weight: 600;
  color: var(--qnth-teal);
}
.qnth-therapeutic-tag__note {
  font-size: 12px;
  color: var(--qnth-text-dark-muted);
}

/* ============================================================
   PRICING PAGE
   ============================================================ */
.qnth-pricing-tiers {
  padding: 5rem 0;
}
.qnth-pricing-tiers__inner {
  max-width: var(--qnth-container-max);
  margin: 0 auto;
  padding: 0 var(--qnth-container-pad);
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 1.5rem;
  align-items: start;
}
.qnth-pricing-card {
  background: var(--qnth-white);
  border: 1.5px solid rgba(14,28,49,0.1);
  border-radius: var(--qnth-radius-lg);
  padding: 2.25rem 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  transition: box-shadow 0.3s var(--qnth-ease);
}
.qnth-pricing-card:hover {
  box-shadow: 0 8px 32px rgba(14,28,49,0.1);
}
.qnth-pricing-card--highlighted {
  border-color: var(--qnth-teal);
  box-shadow: 0 4px 24px rgba(0,194,168,0.2);
  margin-top: -1rem;
}
.qnth-pricing-card--highlighted:hover {
  box-shadow: 0 10px 36px rgba(0,194,168,0.3);
}
.qnth-pricing-card__badge {
  display: inline-flex;
  padding: 0.25rem 0.75rem;
  background: var(--qnth-teal);
  color: var(--qnth-text-light-primary);
  border-radius: 100px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  width: fit-content;
}
.qnth-pricing-card__name {
  font-family: var(--qnth-font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--qnth-text-light-primary);
}
.qnth-pricing-card__price {
  display: flex;
  align-items: baseline;
  gap: 0.375rem;
}
.qnth-pricing-card__amount {
  font-family: var(--qnth-font-heading);
  font-size: clamp(2rem, 3.5vw, 2.75rem);
  font-weight: 700;
  color: var(--qnth-text-light-primary);
  line-height: 1;
}
.qnth-pricing-card__billing {
  font-size: 13px;
  color: var(--qnth-text-light-muted);
}
.qnth-pricing-card__positioning {
  font-size: 14px;
  color: var(--qnth-text-light-muted);
  line-height: 1.6;
}
.qnth-pricing-card__features {
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
  flex: 1;
}
.qnth-pricing-card__feature {
  display: flex;
  align-items: flex-start;
  gap: 0.625rem;
  font-size: 14px;
  color: var(--qnth-text-light-muted);
}
.qnth-pricing-card__feature i {
  color: var(--qnth-teal);
  font-size: 13px;
  margin-top: 0.15em;
  flex-shrink: 0;
}
.qnth-pricing-card__cta {
  margin-top: 0.5rem;
}
.qnth-pricing-card__cta .qnth-btn {
  width: 100%;
  justify-content: center;
}

/* ============================================================
   COMPARISON TABLE
   ============================================================ */
.qnth-compare-section {
  padding: 5rem 0;
}
.qnth-compare-scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.qnth-compare-table {
  max-width: var(--qnth-container-max);
  margin: 0 auto;
  padding: 0 var(--qnth-container-pad);
}
.qnth-compare-table table {
  width: 100%;
  border-collapse: collapse;
  min-width: 600px;
}
.qnth-compare-table th,
.qnth-compare-table td {
  padding: 0.875rem 1.25rem;
  text-align: left;
  border-bottom: 1px solid rgba(14,28,49,0.08);
  font-size: 14px;
}
.qnth-compare-table th {
  font-weight: 600;
  color: var(--qnth-text-light-primary);
  background: var(--qnth-light);
  font-family: var(--qnth-font-body);
}
.qnth-compare-table th:first-child { border-radius: var(--qnth-radius) 0 0 0; }
.qnth-compare-table th:last-child { border-radius: 0 var(--qnth-radius) 0 0; }
.qnth-compare-table td { color: var(--qnth-text-light-muted); }
.qnth-compare-table td:first-child { color: var(--qnth-text-light-primary); font-weight: 500; }
.qnth-compare-table tr:last-child td { border-bottom: none; }
.qnth-compare-table td i.fa-check { color: var(--qnth-teal); }
.qnth-compare-table td i.fa-xmark { color: rgba(14,28,49,0.25); }
.qnth-compare-table__highlight { background: rgba(0,194,168,0.04); }

/* ============================================================
   FAQ ACCORDION
   ============================================================ */
.qnth-faq {
  padding: 5rem 0;
}
.qnth-faq__inner {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 var(--qnth-container-pad);
}
.qnth-faq__list {
  display: flex;
  flex-direction: column;
  gap: 0;
  border-top: 1px solid rgba(14,28,49,0.1);
}
.qnth-faq__item {
  border-bottom: 1px solid rgba(14,28,49,0.1);
}
.qnth-faq__question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.375rem 0;
  cursor: pointer;
  background: none;
  border: none;
  width: 100%;
  text-align: left;
  font-family: var(--qnth-font-body);
  font-size: 15px;
  font-weight: 600;
  color: var(--qnth-text-light-primary);
  gap: 1rem;
}
.qnth-faq__question:hover { color: var(--qnth-teal); }
.qnth-faq__question i {
  flex-shrink: 0;
  transition: transform var(--qnth-dur) var(--qnth-ease);
  color: var(--qnth-teal);
  font-size: 13px;
}
.qnth-faq__item--open .qnth-faq__question i {
  transform: rotate(180deg);
}
.qnth-faq__answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s var(--qnth-ease);
}
.qnth-faq__item--open .qnth-faq__answer {
  max-height: 400px;
}
.qnth-faq__answer-inner {
  padding: 0 0 1.375rem;
  font-size: 14px;
  color: var(--qnth-text-light-muted);
  line-height: 1.75;
}

/* ============================================================
   ABOUT: MISSION / PULL QUOTE
   ============================================================ */
.qnth-pull-quote {
  font-family: var(--qnth-font-heading);
  font-size: clamp(1.25rem, 2.2vw, 1.75rem);
  font-weight: 300;
  line-height: 1.55;
  color: var(--qnth-teal);
  border-left: 3px solid var(--qnth-teal);
  padding-left: 1.5rem;
  margin: 2rem 0;
}
.qnth-mission-body {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--qnth-text-dark-muted);
  max-width: 700px;
}
.qnth-mission-centered {
  max-width: var(--qnth-container-max);
  margin: 0 auto;
  padding: 0 var(--qnth-container-pad);
  text-align: center;
}
.qnth-mission-centered .qnth-pull-quote {
  border-left: none;
  padding-left: 0;
  max-width: 700px;
  margin: 1.5rem auto;
}

/* ============================================================
   ABOUT: TEAM GRID
   2x2 portrait grid
   ============================================================ */
.qnth-team {
  padding: 5rem 0;
}
.qnth-team__grid {
  max-width: var(--qnth-container-max);
  margin: 0 auto;
  padding: 0 var(--qnth-container-pad);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}
.qnth-team-card {
  background: var(--qnth-white);
  border-radius: var(--qnth-radius-lg);
  overflow: hidden;
  border: 1px solid rgba(14,28,49,0.08);
  display: flex;
  flex-direction: column;
}
.qnth-team-card__portrait-wrap {
  width: 140px;
  height: 140px;
  border-radius: 50%;
  background: var(--qnth-light-alt);
  overflow: hidden;
  position: relative;
  margin: 1.75rem auto 0;
}
.qnth-team-card__portrait-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.qnth-team-card__initials {
  display: none;
  width: 100%;
  height: 100%;
  align-items: center;
  justify-content: center;
  font-family: var(--qnth-font-heading);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--qnth-text-light-muted);
  background: var(--qnth-light-alt);
}
.qnth-team-card__info {
  padding: 1.5rem;
}
.qnth-team-card__name {
  font-family: var(--qnth-font-heading);
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--qnth-text-light-primary);
  margin-bottom: 0.25rem;
}
.qnth-team-card__role {
  font-size: 13px;
  font-weight: 600;
  color: var(--qnth-teal);
  margin-bottom: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.qnth-team-card__bio {
  font-size: 14px;
  color: var(--qnth-text-light-muted);
  line-height: 1.6;
}

/* ============================================================
   ABOUT: APPROACH / CONTACT CALLOUT
   ============================================================ */
.qnth-approach-inner {
  max-width: var(--qnth-container-max);
  margin: 0 auto;
  padding: 0 var(--qnth-container-pad);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}
.qnth-approach-h2 {
  font-family: var(--qnth-font-heading);
  font-size: clamp(1.375rem, 2.2vw, 1.875rem);
  font-weight: 700;
  color: var(--qnth-text-dark-primary);
  margin-bottom: 1.25rem;
}
.qnth-approach-body {
  font-size: 1rem;
  color: var(--qnth-text-dark-muted);
  line-height: 1.8;
}
.qnth-about-contact {
  padding: 5rem 0;
}
.qnth-about-contact__inner {
  max-width: var(--qnth-container-max);
  margin: 0 auto;
  padding: 0 var(--qnth-container-pad);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}
.qnth-about-contact__info {
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}
.qnth-about-contact__line {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 15px;
  color: var(--qnth-text-dark-muted);
}
.qnth-about-contact__line i {
  color: var(--qnth-teal);
  font-size: 14px;
  width: 20px;
  text-align: center;
}
.qnth-about-contact__line a {
  color: var(--qnth-teal);
}

/* ============================================================
   CONTACT FORM
   Two-column: form left, info right
   ============================================================ */
.qnth-contact-form-section {
  padding: 5rem 0;
}
.qnth-contact-grid {
  max-width: var(--qnth-container-max);
  margin: 0 auto;
  padding: 0 var(--qnth-container-pad);
  display: grid;
  grid-template-columns: 3fr 2fr;
  gap: 4rem;
  align-items: start;
}
.qnth-form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}
.qnth-form__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}
.qnth-form__group {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
}
.qnth-form__label {
  font-size: 13px;
  font-weight: 500;
  color: var(--qnth-text-light-primary);
}
.qnth-form__input,
.qnth-form__select,
.qnth-form__textarea {
  width: 100%;
  padding: 0.625rem 0.875rem;
  border: 1.5px solid rgba(14,28,49,0.2);
  border-radius: var(--qnth-radius);
  font-size: 15px;
  color: var(--qnth-text-light-primary);
  background: var(--qnth-white);
  transition: border-color var(--qnth-dur) var(--qnth-ease),
              box-shadow var(--qnth-dur) var(--qnth-ease);
  appearance: none;
  -webkit-appearance: none;
}
.qnth-form__input:focus,
.qnth-form__select:focus,
.qnth-form__textarea:focus {
  outline: none;
  border-color: var(--qnth-teal);
  box-shadow: 0 0 0 3px rgba(0,194,168,0.12);
}
.qnth-form__input::placeholder,
.qnth-form__textarea::placeholder {
  color: var(--qnth-text-light-muted);
}
.qnth-form__textarea { min-height: 120px; resize: vertical; }
.qnth-form__submit { margin-top: 0.5rem; }
.qnth-contact-info {
  padding-top: 0.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}
.qnth-contact-info__heading {
  font-family: var(--qnth-font-heading);
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--qnth-text-light-primary);
  margin-bottom: 0.75rem;
}
.qnth-contact-info__item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  font-size: 14px;
  color: var(--qnth-text-light-muted);
}
.qnth-contact-info__item i {
  color: var(--qnth-teal);
  font-size: 14px;
  margin-top: 0.2em;
  flex-shrink: 0;
  width: 18px;
  text-align: center;
}
.qnth-contact-info__item a { color: var(--qnth-teal); }
.qnth-form-confirm {
  display: none;
  flex-direction: column;
  align-items: flex-start;
  gap: 1rem;
  padding: 2rem;
  background: rgba(0,194,168,0.06);
  border: 1px solid rgba(0,194,168,0.2);
  border-radius: var(--qnth-radius);
}
.qnth-form-confirm--visible { display: flex; }
.qnth-form-confirm__icon { color: var(--qnth-teal); font-size: 24px; }
.qnth-form-confirm__title {
  font-family: var(--qnth-font-heading);
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--qnth-text-light-primary);
}
.qnth-form-confirm__body { font-size: 14px; color: var(--qnth-text-light-muted); line-height: 1.65; }

/* ============================================================
   CONTACT: ADDRESS BLOCK
   ============================================================ */
.qnth-address-block {
  padding: 3.5rem 0;
}
.qnth-address-block__inner {
  max-width: var(--qnth-container-max);
  margin: 0 auto;
  padding: 0 var(--qnth-container-pad);
  text-align: center;
}
.qnth-address-block__name {
  font-family: var(--qnth-font-heading);
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--qnth-text-light-primary);
  margin-bottom: 0.5rem;
}
.qnth-address-block__lines {
  font-size: 14px;
  color: var(--qnth-text-light-muted);
  line-height: 1.75;
}
.qnth-address-block__lines a { color: var(--qnth-teal); }

/* ============================================================
   RESEARCH INDEX
   ============================================================ */
.qnth-research-featured {
  padding: 3.5rem 0;
}
.qnth-featured-article {
  max-width: var(--qnth-container-max);
  margin: 0 auto;
  padding: 0 var(--qnth-container-pad);
}
.qnth-featured-article__card {
  display: grid;
  grid-template-columns: 2fr 3fr;
  gap: 2.5rem;
  align-items: center;
  background: var(--qnth-light-alt);
  border-radius: var(--qnth-radius-lg);
  overflow: hidden;
  border: 1px solid rgba(14,28,49,0.08);
}
.qnth-featured-article__img {
  aspect-ratio: 4/3;
  overflow: hidden;
}
.qnth-featured-article__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.qnth-featured-article__content {
  padding: 2rem 2rem 2rem 0;
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
}
.qnth-featured-article__tag {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--qnth-teal);
}
.qnth-featured-article__h2 {
  font-family: var(--qnth-font-heading);
  font-size: clamp(1.25rem, 2vw, 1.625rem);
  font-weight: 700;
  color: var(--qnth-text-light-primary);
  line-height: 1.25;
}
.qnth-featured-article__excerpt {
  font-size: 14px;
  color: var(--qnth-text-light-muted);
  line-height: 1.65;
}
.qnth-featured-article__date {
  font-family: var(--qnth-font-mono);
  font-size: 12px;
  color: var(--qnth-text-light-muted);
}
.qnth-featured-article__link {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  font-size: 13px;
  font-weight: 600;
  color: var(--qnth-teal);
  margin-top: 0.25rem;
  transition: gap var(--qnth-dur) var(--qnth-ease);
}
.qnth-featured-article__link:hover { gap: 0.625rem; }
.qnth-featured-article__link i { font-size: 11px; }

.qnth-article-grid-section {
  padding: 3.5rem 0 5rem;
}
.qnth-article-grid {
  max-width: var(--qnth-container-max);
  margin: 0 auto;
  padding: 0 var(--qnth-container-pad);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.qnth-article-card {
  background: var(--qnth-white);
  border-radius: var(--qnth-radius);
  overflow: hidden;
  border: 1px solid rgba(14,28,49,0.08);
  display: flex;
  flex-direction: column;
  transition: box-shadow 0.3s var(--qnth-ease), transform 0.3s var(--qnth-ease);
}
.qnth-article-card:hover {
  box-shadow: 0 6px 24px rgba(14,28,49,0.1);
  transform: translateY(-2px);
}
.qnth-article-card__img {
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--qnth-light-alt);
}
.qnth-article-card__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.3s var(--qnth-ease);
}
.qnth-article-card:hover .qnth-article-card__img img { transform: scale(1.03); }
.qnth-article-card__content {
  padding: 1.375rem 1.375rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
  flex: 1;
}
.qnth-article-card__date {
  font-family: var(--qnth-font-mono);
  font-size: 11px;
  color: var(--qnth-text-light-muted);
  letter-spacing: 0.04em;
}
.qnth-article-card__title {
  font-family: var(--qnth-font-heading);
  font-size: 1rem;
  font-weight: 700;
  color: var(--qnth-text-light-primary);
  line-height: 1.35;
}
.qnth-article-card__excerpt {
  font-size: 13px;
  color: var(--qnth-text-light-muted);
  line-height: 1.6;
  flex: 1;
}
.qnth-article-card__read {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  font-size: 12px;
  font-weight: 600;
  color: var(--qnth-teal);
  margin-top: 0.25rem;
  transition: gap var(--qnth-dur) var(--qnth-ease);
}
.qnth-article-card__read:hover { gap: 0.625rem; }
.qnth-article-card__read i { font-size: 10px; }

/* ============================================================
   SECTION CTA (shared dark closing CTA pattern)
   ============================================================ */
.qnth-section-cta {
  padding: 5rem 0;
}
.qnth-section-cta__inner {
  max-width: var(--qnth-container-max);
  margin: 0 auto;
  padding: 0 var(--qnth-container-pad);
  text-align: center;
}
.qnth-section-cta__h2 {
  font-family: var(--qnth-font-heading);
  font-size: clamp(1.5rem, 2.5vw, 2.125rem);
  font-weight: 700;
  color: var(--qnth-text-dark-primary);
  margin-bottom: 0.75rem;
}
.qnth-section-cta__body {
  font-size: 1rem;
  color: var(--qnth-text-dark-muted);
  margin-bottom: 2rem;
  line-height: 1.65;
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
}
.qnth-section-cta__btns {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

/* ============================================================
   SCIENCE PAGE specific
   ============================================================ */
.qnth-sci-numbered-steps {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  counter-reset: sci-step;
}
.qnth-sci-step {
  display: flex;
  gap: 1.25rem;
  align-items: flex-start;
}
.qnth-sci-step__num {
  width: 36px;
  height: 36px;
  min-width: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,194,168,0.1);
  border: 1px solid rgba(0,194,168,0.3);
  border-radius: 50%;
  font-size: 14px;
  font-weight: 700;
  font-family: var(--qnth-font-body);
  color: var(--qnth-teal);
}
.qnth-sci-step__text {
  font-size: 14px;
  color: var(--qnth-text-dark-muted);
  line-height: 1.7;
  padding-top: 0.5rem;
}

/* ============================================================
   INFO PANEL / FEATURE HIGHLIGHT
   (used on platform, science, etc.)
   ============================================================ */
.qnth-info-panel {
  max-width: var(--qnth-container-max);
  margin: 0 auto;
  padding: 0 var(--qnth-container-pad);
}
.qnth-info-panel--centered {
  text-align: center;
  max-width: 800px;
}
.qnth-info-panel__h2 {
  font-family: var(--qnth-font-heading);
  font-size: clamp(1.375rem, 2.2vw, 1.875rem);
  font-weight: 700;
  line-height: 1.25;
  margin-bottom: 1.25rem;
}
.qnth-bg--dark .qnth-info-panel__h2,
.qnth-bg--dark-alt .qnth-info-panel__h2 { color: var(--qnth-text-dark-primary); }
.qnth-bg--light .qnth-info-panel__h2,
.qnth-bg--light-alt .qnth-info-panel__h2,
.qnth-bg--white .qnth-info-panel__h2 { color: var(--qnth-text-light-primary); }
.qnth-info-panel__body {
  font-size: 1rem;
  line-height: 1.8;
}
.qnth-bg--dark .qnth-info-panel__body,
.qnth-bg--dark-alt .qnth-info-panel__body { color: var(--qnth-text-dark-muted); }
.qnth-bg--light .qnth-info-panel__body,
.qnth-bg--light-alt .qnth-info-panel__body,
.qnth-bg--white .qnth-info-panel__body { color: var(--qnth-text-light-muted); }

/* ============================================================
   PROSE BLOCK (generic text column, science editorial)
   ============================================================ */
.qnth-prose-block {
  max-width: var(--qnth-container-max);
  margin: 0 auto;
  padding: 0 var(--qnth-container-pad);
}
.qnth-prose-block--wide { max-width: 900px; }
.qnth-prose-block--narrow { max-width: 680px; }
.qnth-prose-block__body {
  font-size: 1rem;
  line-height: 1.85;
}
.qnth-bg--dark .qnth-prose-block__body,
.qnth-bg--dark-alt .qnth-prose-block__body { color: var(--qnth-text-dark-muted); }
.qnth-bg--light .qnth-prose-block__body,
.qnth-bg--light-alt .qnth-prose-block__body { color: var(--qnth-text-light-muted); }

/* ============================================================
   FOOTER
   ============================================================ */
.qnth-footer {
  background: var(--qnth-dark);
  color: var(--qnth-text-dark-muted);
  padding: 4rem 0 0;
}
.qnth-footer__inner {
  max-width: var(--qnth-container-max);
  margin: 0 auto;
  padding: 0 var(--qnth-container-pad) 3rem;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 2.5rem;
}
.qnth-footer__brand {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.qnth-footer__logo img { height: 28px; width: auto; }
.qnth-footer__tagline {
  font-size: 13px;
  color: var(--qnth-text-dark-muted);
  line-height: 1.65;
  max-width: 260px;
}
.qnth-footer__col { display: flex; flex-direction: column; gap: 0.75rem; }
.qnth-footer__col-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--qnth-text-dark-primary);
  margin-bottom: 0.25rem;
}
.qnth-footer__links {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.qnth-footer__link {
  font-size: 14px;
  color: var(--qnth-text-dark-muted);
  transition: color var(--qnth-dur) var(--qnth-ease);
}
.qnth-footer__link:hover { color: var(--qnth-teal); }
.qnth-footer__bottom {
  border-top: 1px solid rgba(139,164,192,0.15);
  padding: 1.5rem var(--qnth-container-pad);
  max-width: var(--qnth-container-max);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
}
.qnth-footer__copyright {
  font-size: 13px;
  color: var(--qnth-text-dark-muted);
}
.qnth-footer__bottom-links {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}
.qnth-footer__bottom-link {
  font-size: 13px;
  color: var(--qnth-text-dark-muted);
  transition: color var(--qnth-dur) var(--qnth-ease);
}
.qnth-footer__bottom-link:hover { color: var(--qnth-teal); }

/* ============================================================
   COOKIE BANNER
   ============================================================ */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 999;
  background: var(--qnth-dark-alt);
  border-top: 1px solid rgba(0,194,168,0.2);
  padding: 1rem 0;
}
.cookie-banner__inner {
  max-width: var(--qnth-container-max);
  margin: 0 auto;
  padding: 0 var(--qnth-container-pad);
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}
.cookie-banner__text {
  flex: 1;
  font-size: 13px;
  color: var(--qnth-text-dark-muted);
  line-height: 1.6;
  min-width: 240px;
}
.cookie-banner__text a { color: var(--qnth-teal); text-decoration: underline; }
.cookie-banner__actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
}
.cookie-banner__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 1.25rem;
  border-radius: var(--qnth-radius);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  border: 1.5px solid transparent;
  transition: background var(--qnth-dur) var(--qnth-ease),
              color var(--qnth-dur) var(--qnth-ease),
              border-color var(--qnth-dur) var(--qnth-ease);
}
.cookie-banner__btn--primary {
  background: var(--qnth-teal);
  color: var(--qnth-text-light-primary);
  border-color: var(--qnth-teal);
}
.cookie-banner__btn--primary:hover { background: #00d9bc; border-color: #00d9bc; }
.cookie-banner__btn--secondary {
  background: transparent;
  color: var(--qnth-text-dark-primary);
  border-color: rgba(232,239,248,0.35);
}
.cookie-banner__btn--secondary:hover { background: rgba(232,239,248,0.08); }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .qnth-footer__inner {
    grid-template-columns: 1fr 1fr;
  }
  .qnth-footer__brand { grid-column: 1 / -1; }
  .qnth-pricing-tiers__inner {
    grid-template-columns: 1fr;
    max-width: 440px;
  }
  .qnth-pricing-card--highlighted { margin-top: 0; }
  .qnth-workflow__grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  :root { --qnth-nav-h: 56px; }

  .qnth-nav__links,
  .qnth-nav__right { display: none; }
  .qnth-nav__hamburger { display: flex; }
  .qnth-nav__inner { gap: 0; }

  .qnth-home-hero__inner {
    grid-template-columns: 1fr;
    text-align: center;
    padding: 3rem var(--qnth-container-pad);
  }
  .qnth-home-hero__text { align-items: center; }
  .qnth-home-hero__sub { max-width: 100%; }
  .qnth-home-hero__visual { order: -1; max-width: 380px; margin: 0 auto; }
  .qnth-home-hero { min-height: auto; padding-bottom: 3rem; }

  .qnth-problem__inner { grid-template-columns: 1fr; gap: 2.5rem; }
  .qnth-how__steps {
    grid-template-columns: 1fr;
  }
  .qnth-how__step--offset { margin-top: 0; }
  .qnth-proof__strip { grid-template-columns: 1fr; }
  .qnth-usecases-preview__cards { grid-template-columns: 1fr; }
  .qnth-uc-card--offset { margin-top: 0; }
  .qnth-two-col { grid-template-columns: 1fr; gap: 2rem; }
  .qnth-two-col--wide-left,
  .qnth-two-col--wide-right { grid-template-columns: 1fr; }
  .qnth-contact-grid { grid-template-columns: 1fr; }
  .qnth-form__row { grid-template-columns: 1fr; }
  .qnth-featured-article__card { grid-template-columns: 1fr; }
  .qnth-featured-article__content { padding: 1.5rem; }
  .qnth-article-grid { grid-template-columns: 1fr; }
  .qnth-team__grid { grid-template-columns: 1fr; }
  .qnth-uc-inner { grid-template-columns: 1fr; gap: 2rem; }
  .qnth-approach-inner { grid-template-columns: 1fr; gap: 2rem; }
  .qnth-footer__inner { grid-template-columns: 1fr 1fr; }
  .qnth-footer__brand { grid-column: 1 / -1; }
  .qnth-footer__bottom { flex-direction: column; align-items: flex-start; }
  .qnth-pricing-tiers__inner { grid-template-columns: 1fr; max-width: 100%; }
  .qnth-workflow__grid { grid-template-columns: 1fr 1fr; }
  .qnth-compare-scroll { overflow-x: auto; }
  .qnth-subhero__inner { padding: 3rem var(--qnth-container-pad); }
  .qnth-subhero__cols { grid-template-columns: 1fr; }
  .qnth-subhero__glass { display: none; }
  .qnth-closing-cta { padding: 4rem 0; }
  .qnth-section { padding: 3.5rem 0; }
  .qnth-problem, .qnth-how, .qnth-proof, .qnth-usecases-preview, .qnth-testimonial { padding: 3.5rem 0; }
  .qnth-closing-cta__btns { flex-direction: column; align-items: center; }
  .qnth-section-cta__btns { flex-direction: column; align-items: center; }
  .qnth-home-hero__cta-group { justify-content: center; }
  .qnth-about-contact__info { flex-direction: column; align-items: center; }
}

@media (max-width: 640px) {
  .qnth-auth__card { padding: 2rem 1.5rem; }
  .qnth-testimonial__inner { max-width: 100%; }
  .qnth-cookie-banner__inner { flex-direction: column; align-items: flex-start; }
  .qnth-article-grid { grid-template-columns: 1fr; }
  .qnth-workflow__grid { grid-template-columns: 1fr; }
  .qnth-footer__inner { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .qnth-btn--lg { padding: 0.625rem 1.25rem; font-size: 14px; }
  .qnth-home-hero__cta-group { flex-direction: column; align-items: stretch; width: 100%; max-width: 280px; }
  .qnth-home-hero__cta-group .qnth-btn { justify-content: center; }
}

/* ============================================================
   PRINT
   ============================================================ */
@media print {
  .qnth-nav, .qnth-nav__mobile-menu, .qnth-footer, .cookie-banner { display: none; }
  body { color: #000; background: #fff; }
  a { text-decoration: underline; }
}

/* ============================================================
   CONTRAST OVERRIDES — teal-on-light AA fix (#00C2A8 = 2.26:1 on light
   backgrounds; override with deep teal #005F52 = 7.0:1 on white/F0F4F9)
   ============================================================ */
.qnth-auth__links a {
  color: #005F52;
}
.qnth-auth__links a:hover {
  color: #007A6A;
}
.qnth-subhero--light .qnth-subhero__eyebrow {
  color: #005F52;
}
.qnth-article-card__read,
.qnth-featured-article__link {
  color: #005F52;
}
.qnth-article-card__read:hover,
.qnth-featured-article__link:hover {
  color: #007A6A;
}
.qnth-featured-article__tag {
  color: #005F52;
}
.qnth-article-back a {
  color: #005F52;
}
.qnth-article-back a:hover {
  color: #007A6A;
}
.qnth-article-header__tag {
  color: #005F52;
}
.qnth-legal-content a {
  color: #005F52;
}
.qnth-legal-content a:hover {
  color: #007A6A;
}

/* ============================================================
   RELATED ARTICLES — More from Research
   ============================================================ */
.qnth-related {
  padding: 4rem 1.5rem;
}
.qnth-related__inner {
  max-width: 1100px;
  margin: 0 auto;
}
.qnth-related__heading {
  font-family: var(--qnth-font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--qnth-text-light-primary);
  margin-bottom: 1.75rem;
  letter-spacing: -0.01em;
}
.qnth-related__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.qnth-related-card {
  background: var(--qnth-white);
  border-radius: var(--qnth-radius);
  border: 1px solid rgba(14,28,49,0.08);
  display: flex;
  flex-direction: column;
  transition: box-shadow 0.3s var(--qnth-ease), transform 0.3s var(--qnth-ease);
}
.qnth-related-card:hover {
  box-shadow: 0 6px 24px rgba(14,28,49,0.1);
  transform: translateY(-2px);
}
.qnth-related-card__content {
  padding: 1.25rem 1.25rem 1.375rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  flex: 1;
}
.qnth-related-card__date {
  font-family: var(--qnth-font-mono);
  font-size: 11px;
  color: var(--qnth-text-light-muted);
  letter-spacing: 0.04em;
}
.qnth-related-card__title {
  font-family: var(--qnth-font-heading);
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--qnth-text-light-primary);
  line-height: 1.35;
}
.qnth-related-card__title a {
  color: inherit;
  text-decoration: none;
}
.qnth-related-card__title a:hover {
  color: #005F52;
}
.qnth-related-card__excerpt {
  font-size: 13px;
  color: var(--qnth-text-light-muted);
  line-height: 1.6;
  flex: 1;
}
.qnth-related-card__read {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  font-size: 12px;
  font-weight: 600;
  color: #005F52;
  margin-top: 0.25rem;
  text-decoration: none;
  transition: gap var(--qnth-dur) var(--qnth-ease);
}
.qnth-related-card__read:hover { gap: 0.625rem; color: #007A6A; }
.qnth-related-card__read i { font-size: 10px; }

@media (max-width: 768px) {
  .qnth-related__grid { grid-template-columns: 1fr; }
}
@media (min-width: 769px) and (max-width: 900px) {
  .qnth-related__grid { grid-template-columns: repeat(2, 1fr); }
}