:root {
  --paper: #f5f0e8;
  --ivory: #fcfaf6;
  --ink: #111318;
  --slate: #2b323d;
  --mist: #d9e0da;
  --teal: #204e57;
  --moss: #6e7c63;
  --clay: #b26a4c;
  --gold: #b89a63;
  --line: rgba(17, 19, 24, 0.08);
  --line-strong: rgba(17, 19, 24, 0.16);
  --shadow-soft: 0 12px 40px rgba(17, 19, 24, 0.08);
  --shadow-strong: 0 24px 80px rgba(17, 19, 24, 0.1);
  --radius-sm: 16px;
  --radius-md: 24px;
  --radius-lg: 32px;
  --container: 1180px;
  --section-space: clamp(4.5rem, 8vw, 7rem);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Source Sans 3", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(178, 106, 76, 0.12), transparent 28rem),
    radial-gradient(circle at 85% 12%, rgba(32, 78, 87, 0.15), transparent 20rem),
    linear-gradient(180deg, #f8f4ee 0%, var(--paper) 42%, #f1ebe2 100%);
  color: var(--ink);
  line-height: 1.6;
  min-height: 100vh;
}

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

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
textarea,
select {
  font: inherit;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.container {
  width: min(calc(100% - 2.5rem), var(--container));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(18px);
  background: rgba(252, 250, 246, 0.8);
  border-bottom: 1px solid rgba(17, 19, 24, 0.06);
}

.header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  min-height: 5.5rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.875rem;
}

.brand-mark {
  width: 2.6rem;
  height: 2.6rem;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.brand-copy {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
  line-height: 1.1;
}

.brand-copy strong {
  font-size: 1rem;
  font-weight: 700;
}

.brand-copy span {
  color: rgba(43, 50, 61, 0.75);
  font-size: 0.86rem;
  text-transform: lowercase;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.1rem;
}

.site-nav a {
  padding: 0.6rem 0.85rem;
  border-radius: 999px;
  color: rgba(17, 19, 24, 0.76);
  transition: background-color 180ms ease, color 180ms ease, transform 180ms ease;
}

.site-nav a:hover,
.site-nav a.is-active {
  color: var(--ink);
  background: rgba(32, 78, 87, 0.08);
}

.site-nav .nav-cta {
  background: var(--ink);
  color: var(--ivory);
}

.site-nav .nav-cta:hover {
  background: var(--teal);
  color: var(--ivory);
}

.nav-toggle {
  display: none;
  background: transparent;
  border: 0;
  padding: 0.25rem;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 1.4rem;
  height: 2px;
  margin: 0.28rem 0;
  background: var(--ink);
  transition: transform 180ms ease, opacity 180ms ease;
}

.section {
  padding: var(--section-space) 0;
}

.section--contrast {
  background: rgba(252, 250, 246, 0.72);
  border-block: 1px solid rgba(17, 19, 24, 0.06);
}

.section--evidence {
  background:
    linear-gradient(180deg, rgba(32, 78, 87, 0.04), rgba(32, 78, 87, 0)),
    transparent;
}

.hero {
  padding-top: clamp(4.5rem, 9vw, 7.25rem);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(320px, 0.92fr);
  gap: 3rem;
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.4rem 0.8rem;
  border-radius: 999px;
  border: 1px solid rgba(32, 78, 87, 0.12);
  background: rgba(252, 250, 246, 0.72);
  color: var(--teal);
  font-size: 0.95rem;
  font-weight: 600;
  margin: 0 0 1.25rem;
}

.hero h1,
.section-heading h2,
.showcase-card h2,
.logic-note blockquote,
.evidence-panel h3,
.shell-main h3,
.provider-steps h3,
.cta-panel h2 {
  font-family: "Fraunces", serif;
  font-weight: 500;
  letter-spacing: -0.03em;
  line-height: 1;
  margin: 0;
}

.hero h1 {
  font-size: clamp(3rem, 7vw, 5rem);
  max-width: 11ch;
}

.hero-lead,
.section-heading p,
.comparison-card li,
.lane li,
.logic-cards p,
.logic-note p,
.evidence-panel p,
.product-shell p,
.cta-panel p,
.footer-row p {
  color: rgba(43, 50, 61, 0.88);
  font-size: 1.08rem;
}

.hero-lead {
  margin: 1.4rem 0 0;
  max-width: 41rem;
}

.hero-actions,
.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-top: 2rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3.15rem;
  padding: 0.8rem 1.3rem;
  border-radius: 16px;
  border: 1px solid transparent;
  transition: transform 180ms ease, box-shadow 180ms ease, background-color 180ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button--primary {
  background: var(--ink);
  color: var(--ivory);
  box-shadow: var(--shadow-soft);
}

.button--primary:hover {
  background: var(--teal);
}

.button--secondary {
  background: rgba(252, 250, 246, 0.82);
  color: var(--ink);
  border-color: rgba(17, 19, 24, 0.12);
}

.button--secondary:hover {
  box-shadow: var(--shadow-soft);
}

.hero-points {
  list-style: none;
  padding: 0;
  margin: 1.9rem 0 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0.8rem;
}

.hero-points li,
.showcase-tags span {
  padding: 0.55rem 0.95rem;
  border-radius: 999px;
  background: rgba(252, 250, 246, 0.82);
  border: 1px solid rgba(17, 19, 24, 0.08);
  color: rgba(17, 19, 24, 0.76);
}

.hero-showcase {
  position: relative;
  display: grid;
  gap: 1rem;
}

.showcase-card {
  padding: 1.5rem;
  border-radius: var(--radius-md);
  border: 1px solid rgba(17, 19, 24, 0.08);
  background: rgba(252, 250, 246, 0.92);
  box-shadow: var(--shadow-strong);
}


.card-label {
  margin: 0 0 0.85rem;
  color: var(--teal);
  font-size: 0.92rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-weight: 700;
}

.showcase-card h2 {
  font-size: clamp(1.7rem, 3vw, 2.35rem);
  margin-bottom: 0.9rem;
}

.showcase-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 1.15rem;
}

.stack-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.9rem;
}

.stack-list li {
  display: grid;
  gap: 0.25rem;
  padding: 1rem;
  border-radius: 18px;
  background: linear-gradient(180deg, rgba(245, 240, 232, 0.82), rgba(255, 255, 255, 0.72));
  border: 1px solid rgba(17, 19, 24, 0.08);
}

.evidence-band {
  padding: 0 0 var(--section-space);
}

.evidence-band__grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  background: rgba(17, 19, 24, 0.08);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.evidence-band__grid article {
  min-height: 13rem;
  padding: 1.7rem;
  background: rgba(252, 250, 246, 0.88);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.evidence-band__grid strong {
  font-family: "Fraunces", serif;
  font-size: clamp(2.3rem, 5vw, 3.75rem);
  line-height: 0.95;
}

.evidence-band__grid span {
  color: rgba(43, 50, 61, 0.82);
  max-width: 18ch;
}

.section-heading {
  display: grid;
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.section-heading h2 {
  font-size: clamp(2.2rem, 4.4vw, 3.35rem);
  max-width: 14ch;
}

.section-heading--split {
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 0.95fr);
  align-items: end;
}

.section-heading--split h2 {
  max-width: 12ch;
}

.problem-grid,
.comparison-grid,
.logic-cards,
.audience-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
}

.problem-card,
.comparison-card,
.logic-cards article,
.logic-note,
.evidence-panel,
.product-shell,
.cta-panel,
.audience-grid article {
  border-radius: var(--radius-md);
  border: 1px solid rgba(17, 19, 24, 0.08);
  background: rgba(252, 250, 246, 0.82);
  box-shadow: var(--shadow-soft);
}

.problem-card,
.comparison-card,
.logic-cards article,
.logic-note,
.evidence-panel,
.cta-panel,
.audience-grid article {
  padding: 1.55rem;
}

.problem-index {
  font-family: "Fraunces", serif;
  font-size: 2rem;
  color: var(--gold);
  margin: 0 0 0.85rem;
}

.problem-card h3,
.comparison-card h3,
.logic-cards h3,
.audience-grid h3 {
  font-size: 1.2rem;
  margin: 0 0 0.45rem;
}

.comparison-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-bottom: 2rem;
}

.comparison-card ul,
.lane ul,
.provider-steps ul {
  list-style: none;
  padding: 0;
  margin: 1rem 0 0;
  display: grid;
  gap: 0.8rem;
}

.comparison-card li,
.lane li,
.provider-steps li {
  position: relative;
  padding-left: 1.1rem;
}

.comparison-card li::before,
.lane li::before,
.provider-steps li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6rem;
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 50%;
  background: var(--gold);
}

.comparison-card--featured {
  background:
    linear-gradient(180deg, rgba(32, 78, 87, 0.08), rgba(252, 250, 246, 0.82)),
    rgba(252, 250, 246, 0.92);
  border-color: rgba(32, 78, 87, 0.16);
}

.comparison-card--muted {
  background: rgba(255, 255, 255, 0.56);
}

.lanes {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 10rem minmax(0, 1fr);
  gap: 1rem;
  align-items: center;
}

.lane {
  padding: 1.65rem;
  border-radius: var(--radius-md);
  background: rgba(252, 250, 246, 0.82);
  border: 1px solid rgba(17, 19, 24, 0.08);
}

.lane-title {
  margin: 0;
  color: var(--teal);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 0.88rem;
}

.lane-connector {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 12rem;
}

.lane-connector::before {
  content: "";
  position: absolute;
  inset: 50% 0 auto;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(32, 78, 87, 0.28), transparent);
}

.lane-connector span {
  position: relative;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 7.25rem;
  height: 7.25rem;
  border-radius: 50%;
  background: rgba(252, 250, 246, 0.96);
  border: 1px solid rgba(17, 19, 24, 0.08);
  color: var(--teal);
  font-weight: 700;
  text-align: center;
  line-height: 1.2;
  box-shadow: var(--shadow-soft);
}

.logic-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
  gap: 1.25rem;
  align-items: start;
}

.logic-cards {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.logic-note {
  background:
    linear-gradient(180deg, rgba(184, 154, 99, 0.08), rgba(252, 250, 246, 0.78)),
    rgba(252, 250, 246, 0.9);
}

.logic-note blockquote {
  font-size: clamp(1.6rem, 3vw, 2.35rem);
  margin: 0.2rem 0 1rem;
}

.evidence-grid {
  display: grid;
  gap: 1.5rem;
}

.evidence-panels {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.evidence-panel {
  min-height: 16rem;
  display: grid;
  align-content: start;
  gap: 0.85rem;
}

.evidence-panel h3 {
  font-size: clamp(1.85rem, 3.3vw, 2.4rem);
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.product-shell {
  overflow: hidden;
  padding: 0;
}

.athlete-path-shell {
  box-shadow: var(--shadow-strong);
}

.shell-body {
  display: grid;
  grid-template-columns: 12rem 1fr;
  min-height: 24rem;
}

.shell-body--athlete {
  grid-template-columns: minmax(220px, 0.9fr) minmax(0, 1.35fr);
  min-height: 32rem;
  background:
    linear-gradient(180deg, rgba(252, 250, 246, 0.98), rgba(252, 250, 246, 0.9)),
    rgba(252, 250, 246, 0.9);
}

.shell-sidebar {
  padding: 1.3rem;
  border-right: 1px solid rgba(17, 19, 24, 0.08);
  background: rgba(32, 78, 87, 0.04);
}

.shell-sidebar p {
  margin: 0 0 0.8rem;
  color: rgba(17, 19, 24, 0.72);
}

.shell-sidebar--tabs {
  display: grid;
  gap: 0.55rem;
  align-content: start;
}

.shell-step {
  width: 100%;
  padding: 0.9rem 0.95rem;
  border: 1px solid transparent;
  border-radius: 18px;
  background: transparent;
  color: rgba(17, 19, 24, 0.76);
  text-align: left;
  cursor: pointer;
  transition:
    border-color 180ms ease,
    background-color 180ms ease,
    box-shadow 180ms ease,
    transform 180ms ease,
    color 180ms ease;
}

.shell-step:hover {
  transform: translateX(2px);
  background: rgba(252, 250, 246, 0.7);
}

.shell-step.is-active {
  background:
    linear-gradient(180deg, rgba(252, 250, 246, 0.96), rgba(252, 250, 246, 0.88)),
    rgba(252, 250, 246, 0.92);
  border-color: rgba(32, 78, 87, 0.14);
  color: var(--ink);
  box-shadow: 0 10px 28px rgba(17, 19, 24, 0.06);
}

.shell-step:focus-visible {
  outline: 2px solid rgba(32, 78, 87, 0.35);
  outline-offset: 2px;
}

.shell-step__title,
.shell-step__meta {
  display: block;
}

.shell-step__title {
  font-size: 1.15rem;
  font-weight: 600;
}

.shell-step__meta {
  margin-top: 0.35rem;
  font-size: 0.92rem;
  line-height: 1.35;
  color: rgba(43, 50, 61, 0.7);
}

.shell-main,
.provider-steps {
  padding: 1.45rem;
}

.shell-main h3,
.provider-steps h3 {
  font-size: clamp(1.7rem, 2.8vw, 2.2rem);
  margin-bottom: 1rem;
}

.athlete-panel {
  display: grid;
  gap: 1rem;
  align-content: start;
}

.athlete-panel[hidden] {
  display: none;
}

.athlete-panel__topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.shell-stage {
  margin: 0;
  font-size: 0.88rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(43, 50, 61, 0.68);
}

.athlete-panel__lead {
  margin: -0.2rem 0 0;
  font-size: 1.12rem;
  line-height: 1.6;
  color: rgba(43, 50, 61, 0.9);
  max-width: 38rem;
}

.mini-card-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
  margin-top: 1.15rem;
}

.mini-card-row article,
.note-card,
.verification-stack article {
  padding: 1rem;
  border-radius: 18px;
  background: rgba(252, 250, 246, 0.82);
  border: 1px solid rgba(17, 19, 24, 0.08);
}

.athlete-panel .mini-card-row {
  margin-top: 0.35rem;
}

.athlete-panel .mini-card-row article {
  display: grid;
  gap: 0.4rem;
}

.mini-card-label {
  margin: 0;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(43, 50, 61, 0.68);
}

.athlete-panel .mini-card-row span {
  color: rgba(43, 50, 61, 0.88);
}

.mini-card-row strong {
  font-family: "Fraunces", serif;
  font-size: 1.7rem;
  display: block;
}

.shell-insights {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  list-style: none;
  padding: 0;
  margin: 0;
}

.shell-insights li {
  padding: 0.55rem 0.88rem;
  border-radius: 999px;
  border: 1px solid rgba(17, 19, 24, 0.08);
  background: rgba(245, 240, 232, 0.92);
  color: rgba(17, 19, 24, 0.78);
  font-size: 0.95rem;
  font-weight: 600;
}

.note-card {
  margin-top: 0.9rem;
  background: rgba(32, 78, 87, 0.06);
}

.note-card p {
  margin: 0 0 0.35rem;
  font-weight: 700;
  color: var(--teal);
}

.note-card span {
  display: block;
  color: rgba(17, 19, 24, 0.88);
}

.product-shell--provider .shell-body {
  grid-template-columns: minmax(0, 1.1fr) minmax(220px, 0.9fr);
}

.shell-body--provider {
  background:
    linear-gradient(160deg, rgba(184, 154, 99, 0.08), rgba(252, 250, 246, 0) 35%),
    rgba(252, 250, 246, 0.88);
}

.verification-stack {
  padding: 1.45rem 1.45rem 1.45rem 0;
  display: grid;
  gap: 0.85rem;
  align-content: center;
}

.verification-stack article {
  box-shadow: 0 10px 25px rgba(17, 19, 24, 0.04);
}

.verification-stack strong {
  display: block;
  margin-bottom: 0.25rem;
}

.cta-panel {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 2rem;
  align-items: center;
}

.audience-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.site-footer {
  padding: 1.5rem 0 3rem;
}

.footer-row {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  border-top: 1px solid rgba(17, 19, 24, 0.08);
  padding-top: 1.4rem;
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 320ms ease, transform 320ms ease;
}

main > .reveal:nth-of-type(2) {
  transition-delay: 60ms;
}

main > .reveal:nth-of-type(3) {
  transition-delay: 120ms;
}

main > .reveal:nth-of-type(4) {
  transition-delay: 180ms;
}

main > .reveal:nth-of-type(5) {
  transition-delay: 240ms;
}

main > .reveal:nth-of-type(6) {
  transition-delay: 300ms;
}

main > .reveal:nth-of-type(7) {
  transition-delay: 360ms;
}

main > .reveal:nth-of-type(8) {
  transition-delay: 420ms;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.gap-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid rgba(17, 19, 24, 0.08);
  box-shadow: var(--shadow-soft);
  background: rgba(252, 250, 246, 0.84);
  backdrop-filter: blur(10px);
}

.gap-table thead th {
  padding: 1.1rem 1.35rem;
  font-family: "Fraunces", serif;
  font-weight: 500;
  font-size: 1.05rem;
  text-align: left;
  color: var(--ink);
  background: rgba(32, 78, 87, 0.06);
  border-bottom: 1px solid rgba(17, 19, 24, 0.1);
}

.gap-table thead th:first-child {
  color: var(--teal);
  font-weight: 600;
}

.gap-table thead th:last-child {
  background: linear-gradient(180deg, rgba(32, 78, 87, 0.1), rgba(32, 78, 87, 0.04));
  color: var(--teal);
}

.gap-table tbody td {
  padding: 1rem 1.35rem;
  font-size: 1.02rem;
  color: rgba(43, 50, 61, 0.88);
  border-bottom: 1px solid rgba(17, 19, 24, 0.06);
  vertical-align: top;
  line-height: 1.5;
}

.gap-table tbody tr:last-child td {
  border-bottom: 0;
}

.gap-table tbody td:first-child {
  font-weight: 600;
  color: var(--slate);
  white-space: nowrap;
}

.gap-table tbody td:last-child {
  color: var(--teal);
  font-weight: 600;
}

.gap-table tbody tr:nth-child(even) td {
  background: rgba(32, 78, 87, 0.02);
}

.gap-callouts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 1.5rem;
}

.gap-callouts article {
  padding: 1.35rem;
  border-radius: var(--radius-md);
  border: 1px solid rgba(32, 78, 87, 0.12);
  background: linear-gradient(180deg, rgba(32, 78, 87, 0.06), rgba(252, 250, 246, 0.9));
  box-shadow: var(--shadow-soft);
}

.gap-callouts h3 {
  font-size: 1.15rem;
  margin: 0 0 0.4rem;
  color: var(--ink);
}

.gap-callouts p {
  margin: 0;
  color: rgba(43, 50, 61, 0.88);
  font-size: 1.02rem;
}

@media (max-width: 1080px) {
  .gap-callouts {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {
  .gap-table thead th:first-child,
  .gap-table tbody td:first-child {
    display: none;
  }

  .gap-table thead th,
  .gap-table tbody td {
    padding: 0.85rem 1rem;
  }

  .gap-table {
    font-size: 0.95rem;
  }
}

@media (max-width: 1080px) {
  .hero-grid,
  .logic-grid,
  .cta-panel,
  .section-heading--split,
  .product-grid,
  .evidence-panels,
  .comparison-grid,
  .evidence-band__grid {
    grid-template-columns: 1fr;
  }

  .problem-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .lanes {
    grid-template-columns: 1fr;
  }

  .lane-connector {
    min-height: 8rem;
  }

  .lane-connector::before {
    inset: 0 50% 0 auto;
    width: 1px;
    height: auto;
    background: linear-gradient(180deg, transparent, rgba(32, 78, 87, 0.28), transparent);
  }

  .section-heading--split h2,
  .section-heading h2 {
    max-width: none;
  }
}

@media (max-width: 760px) {
  .container {
    width: min(calc(100% - 1.25rem), var(--container));
  }

  .nav-toggle {
    display: block;
  }

  .site-nav {
    position: absolute;
    top: calc(100% + 0.35rem);
    right: 0.625rem;
    left: 0.625rem;
    padding: 0.8rem;
    border-radius: 22px;
    border: 1px solid rgba(17, 19, 24, 0.08);
    background: rgba(252, 250, 246, 0.96);
    box-shadow: var(--shadow-soft);
    flex-direction: column;
    align-items: stretch;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-6px);
    transition: opacity 180ms ease, transform 180ms ease, visibility 180ms ease;
  }

  .site-nav.is-open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .site-nav a {
    width: 100%;
    text-align: center;
  }

  .header-row {
    position: relative;
  }

  .hero h1 {
    max-width: none;
  }

  .problem-grid,
  .logic-cards,
  .audience-grid,
  .mini-card-row,
  .shell-body,
  .product-shell--provider .shell-body {
    grid-template-columns: 1fr;
  }

  .shell-sidebar--tabs {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .shell-step:hover {
    transform: none;
  }

  .athlete-panel__topline {
    flex-direction: column;
    align-items: flex-start;
  }

  .shell-sidebar {
    border-right: 0;
    border-bottom: 1px solid rgba(17, 19, 24, 0.08);
  }

  .verification-stack {
    padding: 0 1.45rem 1.45rem;
  }

  .footer-row {
    flex-direction: column;
  }
}

/* Shared multi-page presentation refinements */
body {
  overflow-x: hidden;
}

main {
  position: relative;
  z-index: 1;
}

section[id] {
  scroll-margin-top: 7rem;
}

.site-header {
  box-shadow: 0 10px 30px rgba(17, 19, 24, 0.05);
}

.site-nav a {
  font-weight: 600;
  letter-spacing: 0.01em;
}

.site-nav a.is-active,
.site-nav a[aria-current="page"] {
  color: var(--teal);
  background: rgba(32, 78, 87, 0.1);
  box-shadow: inset 0 0 0 1px rgba(32, 78, 87, 0.1);
}

.site-nav .nav-cta {
  background: linear-gradient(135deg, var(--ink), var(--teal));
  color: var(--ivory);
  box-shadow: 0 14px 28px rgba(17, 19, 24, 0.12);
}

.site-nav .nav-cta:hover {
  background: linear-gradient(135deg, var(--teal), #3b6870);
  color: var(--ivory);
}

.site-nav .nav-cta.is-active,
.site-nav .nav-cta[aria-current="page"] {
  color: var(--ivory);
}

.hero-copy {
  max-width: 43rem;
}

.section {
  position: relative;
}

.section-heading {
  max-width: 56rem;
}

.section-heading--split {
  max-width: none;
}

:where(
    .problem-card,
    .comparison-card,
    .logic-cards article,
    .evidence-panel,
    .audience-grid article,
    .showcase-card,
    .logic-note,
    .cta-panel
  ) {
  border-radius: var(--radius-md);
  border: 1px solid rgba(17, 19, 24, 0.08);
  background: rgba(252, 250, 246, 0.84);
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(10px);
}

.showcase-card {
  border-color: rgba(17, 19, 24, 0.08);
}

.comparison-card--featured {
  background:
    linear-gradient(180deg, rgba(32, 78, 87, 0.1), rgba(252, 250, 246, 0.94)),
    rgba(252, 250, 246, 0.94);
  border-color: rgba(32, 78, 87, 0.16);
  box-shadow: var(--shadow-strong);
}

.comparison-card--muted {
  background: rgba(252, 250, 246, 0.72);
}

.logic-note {
  background:
    linear-gradient(180deg, rgba(184, 154, 99, 0.1), rgba(252, 250, 246, 0.9)),
    rgba(252, 250, 246, 0.9);
}

.note-card {
  border-color: rgba(32, 78, 87, 0.14);
  background: rgba(32, 78, 87, 0.08);
}

.footer-row {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) auto;
  align-items: start;
  gap: 1rem 2rem;
  padding: 1.35rem 1.5rem;
  border: 1px solid rgba(17, 19, 24, 0.08);
  border-radius: var(--radius-md);
  background: rgba(252, 250, 246, 0.72);
  box-shadow: var(--shadow-soft);
}

.footer-row p {
  margin: 0;
  color: rgba(43, 50, 61, 0.82);
}

.footer-copy {
  max-width: 44rem;
}

.footer-meta {
  display: grid;
  gap: 0.35rem;
  justify-items: end;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.7rem;
}

.footer-legal {
  text-align: right;
}

.footer-row a {
  color: rgba(17, 19, 24, 0.78);
  transition: color 180ms ease;
}

.footer-row a:hover {
  color: var(--teal);
}

.site-footer {
  padding: 1.75rem 0 2.75rem;
}

@media (max-width: 760px) {
  .footer-row {
    grid-template-columns: 1fr;
    padding: 1.1rem;
  }

  .footer-meta {
    justify-items: start;
  }

  .footer-links {
    justify-content: flex-start;
  }

  .footer-legal {
    text-align: left;
  }

  .site-nav .nav-cta {
    width: 100%;
  }
}

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

  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .button,
  .site-nav a,
  .nav-toggle span {
    transition: none;
  }
}