/* ==========================================================================
   PHI OS Public Experience — M3A-W2 through M3A-W6
   Shared public navigation, footer, Discover, About, Demo and Trust pages.
   ========================================================================== */

.public-header {
  position: sticky;
  top: 0;
  z-index: 300;
  width: 100%;
  border-bottom: 1px solid rgba(17, 20, 26, 0.12);
  background: rgba(250, 249, 246, 0.9);
  color: #11141a;
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.public-header__inner,
.public-footer__inner,
.public-container {
  width: min(1180px, calc(100% - 2.5rem));
  margin-inline: auto;
}

.public-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 74px;
  gap: 1.5rem;
}

.public-brand {
  display: inline-flex;
  align-items: center;
  flex: 0 0 auto;
  gap: 0.7rem;
  min-height: 44px;
  color: inherit;
  font-family: var(--phi-font-body, Inter, Arial, sans-serif);
  font-size: 0.8rem;
  font-weight: 650;
  letter-spacing: 0.16em;
  text-decoration: none;
}

.public-brand__mark {
  font-family: var(--phi-font-display, Newsreader, Georgia, serif);
  font-size: 2rem;
  font-weight: 500;
  letter-spacing: 0;
  line-height: 1;
}

.public-nav {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: clamp(0.35rem, 1.1vw, 1rem);
  min-width: 0;
}

.public-nav__link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0.45rem 0.55rem;
  border-radius: 999px;
  color: #515866;
  font-family: var(--phi-font-body, Inter, Arial, sans-serif);
  font-size: 0.78rem;
  font-weight: 600;
  line-height: 1;
  text-decoration: none;
  white-space: nowrap;
}

.public-nav__link:hover,
.public-nav__link:focus-visible,
.public-nav__link[aria-current="page"] {
  color: #11141a;
}

.public-nav__link[aria-current="page"] {
  background: #ece9e0;
}

.public-language {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  min-height: 44px;
  padding: 0 0.55rem;
  border-left: 1px solid rgba(17, 20, 26, 0.14);
  color: #515866;
  font-family: var(--phi-font-body, Inter, Arial, sans-serif);
}

.public-language__label {
  margin-right: 0.2rem;
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.public-language button {
  min-width: 36px;
  min-height: 44px;
  padding: 0;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: inherit;
  cursor: pointer;
  font-size: 0.75rem;
}

.public-language button:hover,
.public-language button:focus-visible,
.public-language button.is-active {
  color: #11141a;
}

.public-language button.is-active {
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 0.28rem;
}

.public-menu-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  padding: 0;
  border: 1px solid rgba(17, 20, 26, 0.16);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.65);
  color: #11141a;
  cursor: pointer;
}

.public-menu-toggle__lines,
.public-menu-toggle__lines::before,
.public-menu-toggle__lines::after {
  display: block;
  width: 18px;
  height: 1px;
  background: currentColor;
  content: "";
  transition: transform 160ms ease, opacity 160ms ease;
}

.public-menu-toggle__lines {
  position: relative;
}

.public-menu-toggle__lines::before {
  position: absolute;
  top: -6px;
}

.public-menu-toggle__lines::after {
  position: absolute;
  top: 6px;
}

.public-menu-toggle[aria-expanded="true"] .public-menu-toggle__lines {
  background: transparent;
}

.public-menu-toggle[aria-expanded="true"] .public-menu-toggle__lines::before {
  transform: translateY(6px) rotate(45deg);
}

.public-menu-toggle[aria-expanded="true"] .public-menu-toggle__lines::after {
  transform: translateY(-6px) rotate(-45deg);
}

body.public-menu-open {
  overflow: hidden;
}

.public-footer {
  width: 100%;
  border-top: 1px solid rgba(17, 20, 26, 0.14);
  background: #11141a;
  color: #f7f6f1;
  font-family: var(--phi-font-body, Inter, Arial, sans-serif);
}

.public-footer__inner {
  display: grid;
  grid-template-columns: minmax(180px, 0.7fr) minmax(0, 1.3fr);
  gap: 3rem;
  padding-block: clamp(3rem, 7vw, 5.5rem);
}

.public-footer__statement {
  max-width: 25rem;
  margin: 1.25rem 0 0;
  color: #aeb3bc;
  font-size: 0.9rem;
  line-height: 1.65;
}

.public-footer__nav {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.75rem 1.2rem;
  align-content: start;
}

.public-footer__nav a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  color: #d9dce2;
  font-size: 0.84rem;
  text-decoration: none;
}

.public-footer__nav a:hover,
.public-footer__nav a:focus-visible {
  color: #fff;
}

.public-footer__meta {
  grid-column: 1 / -1;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  color: #8f96a1;
  font-size: 0.72rem;
}

.public-footer__meta a {
  color: #c5c9d0;
  text-decoration: none;
}

.public-footer__meta a:hover,
.public-footer__meta a:focus-visible {
  color: #fff;
}

/* Public editorial pages -------------------------------------------------- */

.public-page {
  min-width: 320px;
  margin: 0;
  overflow-x: hidden;
  background: var(--phi-surface-canvas, #f5f3ed);
  color: var(--phi-text-primary, #11141a);
  font-family: var(--phi-font-body, Inter, Arial, sans-serif);
  line-height: 1.6;
}

.public-page main {
  display: block;
}

.public-page h1,
.public-page h2,
.public-page h3,
.public-page p {
  overflow-wrap: anywhere;
}

.public-page h1,
.public-page h2,
.public-page h3 {
  margin-top: 0;
}

.public-page a {
  color: inherit;
}

.public-section {
  padding-block: clamp(5rem, 10vw, 8.5rem);
  border-top: 1px solid var(--phi-border-subtle, rgba(17, 20, 26, 0.16));
  scroll-margin-top: 90px;
}

.public-section--soft {
  background: #ece9e0;
}

.public-section--dark {
  background: #11141a;
  color: #f7f6f1;
}

.public-eyebrow {
  margin: 0 0 1.1rem;
  color: var(--phi-text-secondary, #515866);
  font-size: 0.7rem;
  font-weight: 650;
  letter-spacing: 0.16em;
  line-height: 1.4;
  text-transform: uppercase;
}

.public-section--dark .public-eyebrow {
  color: #9ca3ad;
}

.public-display {
  margin: 0;
  font-family: var(--phi-font-display, Newsreader, Georgia, serif);
  font-size: clamp(3.2rem, 7vw, 7.2rem);
  font-weight: 500;
  letter-spacing: -0.048em;
  line-height: 0.94;
  text-wrap: balance;
}

.public-title {
  margin: 0;
  font-family: var(--phi-font-display, Newsreader, Georgia, serif);
  font-size: clamp(2.45rem, 5vw, 5rem);
  font-weight: 500;
  letter-spacing: -0.038em;
  line-height: 1.02;
  text-wrap: balance;
}

.public-lead {
  max-width: 47rem;
  color: var(--phi-text-secondary, #515866);
  font-size: clamp(1.02rem, 1.5vw, 1.22rem);
  line-height: 1.7;
}

.public-section--dark .public-lead {
  color: #b9bec7;
}

.public-button {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
  min-height: 48px;
  padding: 0.78rem 1.15rem;
  border: 1px solid var(--phi-border-strong, rgba(17, 20, 26, 0.3));
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.45);
  color: #11141a;
  font-size: 0.84rem;
  font-weight: 650;
  text-decoration: none;
  cursor: pointer;
}

.public-button--primary {
  border-color: #11141a;
  background: #11141a;
  color: #fff !important;
}

.public-button--light {
  border-color: #fff;
  background: #fff;
  color: #11141a !important;
}

.public-button:hover {
  transform: translateY(-1px);
}

.public-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2rem;
}

.discover-hero {
  position: relative;
  min-height: min(820px, calc(100svh - 74px));
  display: grid;
  align-items: center;
  overflow: hidden;
  padding-block: clamp(5rem, 11vw, 9rem);
}

.discover-hero::before {
  position: absolute;
  inset: 8% -10% auto 45%;
  width: min(760px, 68vw);
  aspect-ratio: 1;
  border: 1px solid rgba(36, 47, 122, 0.16);
  border-radius: 50%;
  box-shadow:
    0 0 0 80px rgba(36, 47, 122, 0.025),
    0 0 0 160px rgba(36, 47, 122, 0.02);
  content: "";
  pointer-events: none;
}

.discover-hero__copy {
  position: relative;
  z-index: 1;
  max-width: 65rem;
}

.discover-hero__statement span {
  display: block;
}

.discover-hero__statement span:nth-child(2) {
  color: var(--phi-action-knowledge, #6553a6);
}

.discover-hero__statement span:nth-child(3) {
  color: var(--phi-action-reality, #a94f31);
}

.discover-hero__lead {
  max-width: 40rem;
  margin-top: 2rem;
}

.question-grid,
.entry-grid,
.ecosystem-grid,
.trust-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 3rem;
}

.question-card,
.entry-card,
.ecosystem-card,
.trust-card {
  min-width: 0;
  border: 1px solid var(--phi-border-subtle, rgba(17, 20, 26, 0.16));
  border-radius: var(--phi-radius-md, 1.2rem);
  background: rgba(255, 255, 255, 0.54);
  padding: clamp(1.5rem, 3vw, 2.35rem);
}

.question-card {
  min-height: 15rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.question-card span,
.entry-card__index,
.ecosystem-card span,
.trust-card span {
  color: var(--phi-text-secondary, #515866);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
}

.question-card h3,
.entry-card h3,
.ecosystem-card h3,
.trust-card h3 {
  margin: 2rem 0 0;
  font-family: var(--phi-font-display, Newsreader, Georgia, serif);
  font-size: clamp(1.55rem, 2.5vw, 2.2rem);
  font-weight: 500;
  line-height: 1.15;
}

.entry-card {
  min-height: 22rem;
  display: flex;
  flex-direction: column;
  text-decoration: none;
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.entry-card:hover,
.entry-card:focus-visible {
  transform: translateY(-4px);
  box-shadow: var(--phi-shadow-md, 0 18px 50px rgba(20, 24, 33, 0.08));
}

.entry-card p,
.ecosystem-card p,
.trust-card p {
  color: var(--phi-text-secondary, #515866);
}

.entry-card__arrow {
  margin-top: auto;
  font-size: 1.4rem;
}

.navigation-route {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0.65rem;
  margin-top: 3rem;
}

.navigation-route article {
  min-width: 0;
  min-height: 15rem;
  padding: 1.4rem;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 1rem;
  background: rgba(255, 255, 255, 0.035);
}

.navigation-route small {
  color: #8f96a1;
}

.navigation-route h3 {
  margin: 3rem 0 0.75rem;
  font-family: var(--phi-font-display, Newsreader, Georgia, serif);
  font-size: 1.45rem;
  font-weight: 500;
}

.navigation-route p {
  margin: 0;
  color: #b9bec7;
  font-size: 0.88rem;
}

.book-preview {
  display: grid;
  grid-template-columns: minmax(240px, 0.72fr) minmax(0, 1.28fr);
  gap: clamp(2.5rem, 7vw, 6rem);
  align-items: center;
}

.book-preview__visual {
  position: relative;
  min-height: 32rem;
  display: grid;
  place-items: center;
  border-radius: 2rem;
  overflow: hidden;
  background: #ddd7ca;
}

.book-preview__visual img {
  width: min(78%, 360px);
  filter: drop-shadow(0 32px 36px rgba(17, 20, 26, 0.22));
  transform: rotate(-4deg);
}

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

.about-public-hero {
  padding-block: clamp(6rem, 12vw, 10rem);
}

.about-public-hero__grid,
.about-split {
  display: grid;
  grid-template-columns: minmax(260px, 0.72fr) minmax(0, 1.28fr);
  gap: clamp(3rem, 8vw, 7rem);
  align-items: start;
}

.about-public-hero__grid {
  grid-template-columns: minmax(0, 1.25fr) minmax(260px, 0.75fr);
  align-items: end;
}

.about-index {
  padding: 1.8rem;
  border: 1px solid var(--phi-border-subtle, rgba(17, 20, 26, 0.16));
  border-radius: 1.2rem;
  background: rgba(255, 255, 255, 0.5);
}

.about-index ol {
  padding: 0;
  margin: 1rem 0 0;
  list-style: none;
}

.about-index a {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.8rem 0;
  border-top: 1px solid var(--phi-border-subtle, rgba(17, 20, 26, 0.16));
  color: inherit;
  text-decoration: none;
}

.about-copy {
  color: var(--phi-text-secondary, #515866);
  font-size: 1.02rem;
}

.about-copy p {
  margin: 0 0 1.25rem;
}

.book-architecture,
.architecture-parts {
  display: grid;
  gap: 1rem;
  margin-top: 2rem;
}

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

.book-architecture article,
.architecture-part {
  padding: 1.5rem;
  border: 1px solid var(--phi-border-subtle, rgba(17, 20, 26, 0.16));
  border-radius: 1rem;
  background: rgba(255, 255, 255, 0.48);
}

.book-architecture h3,
.architecture-part h3 {
  margin: 1.5rem 0 0.65rem;
  font-family: var(--phi-font-display, Newsreader, Georgia, serif);
  font-size: 1.6rem;
  font-weight: 500;
}

.book-architecture p,
.architecture-part p {
  margin: 0;
  color: var(--phi-text-secondary, #515866);
}

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

.reality-timeline {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 0;
  padding: 0;
  margin: 3rem 0 0;
  list-style: none;
}

.reality-timeline li {
  position: relative;
  min-width: 0;
  padding: 1.4rem 1rem 1.4rem 0;
  border-top: 1px solid var(--phi-border-strong, rgba(17, 20, 26, 0.3));
}

.reality-timeline li::before {
  position: absolute;
  top: -5px;
  left: 0;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--phi-action-primary, #242f7a);
  content: "";
}

.reality-timeline small {
  display: block;
  color: var(--phi-text-secondary, #515866);
  margin-bottom: 0.55rem;
}

.ecosystem-figure {
  margin: 3rem 0 0;
}

.ecosystem-figure__canvas {
  display: grid;
  grid-template-columns: minmax(160px, 0.7fr) minmax(210px, 1fr) minmax(160px, 0.7fr);
  gap: 1rem;
  align-items: stretch;
  padding: clamp(1.25rem, 4vw, 3rem);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 1.5rem;
  background:
    radial-gradient(circle at 50% 50%, rgba(101, 83, 166, 0.2), transparent 45%),
    #171b25;
}

.ecosystem-figure__column {
  display: grid;
  gap: 0.75rem;
  align-content: center;
}

.ecosystem-node {
  display: grid;
  place-items: center;
  min-height: 6.6rem;
  padding: 1rem;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 1rem;
  background: rgba(255, 255, 255, 0.055);
  color: #eef0f4;
  text-align: center;
}

.ecosystem-node small {
  display: block;
  margin-top: 0.35rem;
  color: #aeb3bc;
}

.ecosystem-node--core {
  min-height: 100%;
  border-color: rgba(217, 189, 124, 0.7);
  background: linear-gradient(150deg, rgba(217, 189, 124, 0.18), rgba(101, 83, 166, 0.12));
}

.ecosystem-node--core strong {
  font-family: var(--phi-font-display, Newsreader, Georgia, serif);
  font-size: clamp(2rem, 4vw, 3.7rem);
  font-weight: 500;
}

.ecosystem-figure figcaption {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 1.5rem;
  margin-top: 1rem;
  color: #b9bec7;
  font-size: 0.85rem;
}

.ecosystem-figure figcaption strong {
  color: #f7f6f1;
}

/* Demo ---------------------------------------------------------------- */

.demo-hero,
.legal-hero {
  padding-block: clamp(5rem, 10vw, 8rem);
}

.demo-watch {
  display: grid;
  grid-template-columns: minmax(250px, 0.8fr) minmax(0, 1.2fr);
  gap: clamp(2rem, 6vw, 5rem);
  margin-top: 3rem;
}

.demo-case {
  padding: 2rem;
  border: 1px solid var(--phi-border-subtle, rgba(17, 20, 26, 0.16));
  border-radius: 1.2rem;
  background: rgba(255, 255, 255, 0.5);
}

.demo-case__stage {
  display: grid;
  grid-template-columns: 2.3rem minmax(0, 1fr);
  gap: 0.8rem;
  padding: 1rem 0;
  border-top: 1px solid var(--phi-border-subtle, rgba(17, 20, 26, 0.16));
}

.demo-case__stage:first-of-type {
  margin-top: 1rem;
}

.demo-case__stage span {
  color: var(--phi-text-secondary, #515866);
  font-size: 0.72rem;
}

.demo-case__stage h3 {
  margin: 0 0 0.35rem;
  font-size: 0.9rem;
}

.demo-case__stage p {
  margin: 0;
  color: var(--phi-text-secondary, #515866);
}

.evidence-explorer {
  display: grid;
  gap: 0.7rem;
}

.evidence-card {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 1rem;
  align-items: center;
  width: 100%;
  min-height: 74px;
  padding: 1rem;
  border: 1px solid var(--phi-border-subtle, rgba(17, 20, 26, 0.16));
  border-radius: 1rem;
  background: rgba(255, 255, 255, 0.44);
  color: inherit;
  text-align: left;
  cursor: pointer;
}

.evidence-card[aria-pressed="true"] {
  border-color: var(--phi-action-primary, #242f7a);
  background: #fff;
}

.evidence-card__type {
  color: var(--phi-text-secondary, #515866);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.evidence-explanation {
  min-height: 11rem;
  margin-top: 1rem;
  padding: 1.5rem;
  border-radius: 1rem;
  background: #11141a;
  color: #f7f6f1;
}

.evidence-explanation p {
  color: #b9bec7;
}

.light-try {
  max-width: 53rem;
  margin-top: 3rem;
}

.light-try textarea {
  display: block;
  width: 100%;
  min-height: 130px;
  padding: 1.2rem;
  border: 1px solid var(--phi-border-strong, rgba(17, 20, 26, 0.3));
  border-radius: 1rem;
  background: rgba(255, 255, 255, 0.72);
  color: inherit;
  resize: vertical;
}

.light-try__result {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.7rem;
  margin-top: 1.5rem;
}

.light-try__result article {
  min-width: 0;
  padding: 1rem;
  border: 1px solid var(--phi-border-subtle, rgba(17, 20, 26, 0.16));
  border-radius: 0.9rem;
  background: rgba(255, 255, 255, 0.5);
}

.light-try__result h3 {
  font-size: 0.78rem;
}

.light-try__result p {
  margin: 0;
  color: var(--phi-text-secondary, #515866);
  font-size: 0.86rem;
}

.demo-boundary {
  display: flex;
  gap: 0.8rem;
  align-items: flex-start;
  margin-top: 1.2rem;
  color: var(--phi-text-secondary, #515866);
  font-size: 0.82rem;
}

.demo-boundary::before {
  flex: 0 0 auto;
  content: "○";
  color: var(--phi-state-success, #25755e);
}

/* Legal and trust ----------------------------------------------------- */

.legal-layout {
  display: grid;
  grid-template-columns: minmax(180px, 0.35fr) minmax(0, 1fr);
  gap: clamp(2.5rem, 8vw, 7rem);
  align-items: start;
  padding-bottom: clamp(5rem, 10vw, 8rem);
}

.legal-toc {
  position: sticky;
  top: 100px;
  padding: 1.25rem;
  border: 1px solid var(--phi-border-subtle, rgba(17, 20, 26, 0.16));
  border-radius: 1rem;
  background: rgba(255, 255, 255, 0.46);
}

.legal-toc a {
  display: block;
  padding: 0.55rem 0;
  color: var(--phi-text-secondary, #515866);
  font-size: 0.84rem;
  text-decoration: none;
}

.legal-content {
  max-width: 49rem;
}

.legal-content section {
  padding-block: 2rem;
  border-top: 1px solid var(--phi-border-subtle, rgba(17, 20, 26, 0.16));
  scroll-margin-top: 96px;
}

.legal-content section:first-child {
  border-top: 0;
  padding-top: 0;
}

.legal-content h2 {
  font-family: var(--phi-font-display, Newsreader, Georgia, serif);
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  font-weight: 500;
}

.legal-content p,
.legal-content li {
  color: var(--phi-text-secondary, #515866);
}

.legal-content li + li {
  margin-top: 0.65rem;
}

.contact-card {
  max-width: 45rem;
  padding: clamp(1.5rem, 4vw, 3rem);
  border: 1px solid var(--phi-border-subtle, rgba(17, 20, 26, 0.16));
  border-radius: 1.4rem;
  background: rgba(255, 255, 255, 0.55);
}

html[lang="zh-Hans"] .public-eyebrow {
  letter-spacing: 0.08em;
  text-transform: none;
}

html[lang="zh-Hans"] .public-display,
html[lang="zh-Hans"] .public-title {
  letter-spacing: -0.015em;
  line-height: 1.14;
}

@media (max-width: 1000px) {
  .public-menu-toggle {
    display: inline-flex;
  }

  .public-nav {
    position: fixed;
    inset: 74px 0 auto;
    z-index: 290;
    display: none;
    max-height: calc(100svh - 74px);
    padding: 1rem 1.25rem 1.5rem;
    overflow-y: auto;
    border-bottom: 1px solid rgba(17, 20, 26, 0.16);
    background: #faf9f6;
    box-shadow: 0 22px 44px rgba(17, 20, 26, 0.12);
  }

  .public-nav[data-open="true"] {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: stretch;
  }

  .public-nav__link {
    justify-content: space-between;
    min-height: 54px;
    padding: 0.7rem 0.85rem;
    border: 1px solid rgba(17, 20, 26, 0.12);
    border-radius: 0.8rem;
    background: rgba(255, 255, 255, 0.6);
    font-size: 0.88rem;
  }

  .public-language {
    grid-column: 1 / -1;
    justify-content: flex-start;
    min-height: 54px;
    border-left: 0;
    border-top: 1px solid rgba(17, 20, 26, 0.14);
  }

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

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

@media (max-width: 760px) {
  .public-header__inner,
  .public-footer__inner,
  .public-container {
    width: min(100% - 1.5rem, 1180px);
  }

  .public-footer__inner,
  .about-public-hero__grid,
  .about-split,
  .book-preview,
  .demo-watch,
  .legal-layout {
    grid-template-columns: 1fr;
  }

  .public-footer__nav,
  .question-grid,
  .entry-grid,
  .ecosystem-grid,
  .trust-grid,
  .book-architecture {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .public-footer__meta {
    display: grid;
  }

  .discover-hero {
    min-height: auto;
  }

  .navigation-route,
  .architecture-parts,
  .light-try__result {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .book-preview__visual {
    min-height: 25rem;
  }

  .ecosystem-figure__canvas {
    grid-template-columns: 1fr;
  }

  .ecosystem-node--core {
    min-height: 13rem;
  }

  .legal-toc {
    position: static;
  }
}

@media (max-width: 520px) {
  .public-nav[data-open="true"],
  .public-footer__nav,
  .question-grid,
  .entry-grid,
  .ecosystem-grid,
  .trust-grid,
  .navigation-route,
  .book-architecture,
  .architecture-parts,
  .reality-timeline,
  .light-try__result {
    grid-template-columns: 1fr;
  }

  .public-display {
    font-size: clamp(2.7rem, 14vw, 4.2rem);
  }

  .question-card,
  .entry-card {
    min-height: auto;
  }

  .ecosystem-figure figcaption {
    grid-template-columns: 1fr;
    gap: 0.3rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .public-menu-toggle__lines,
  .public-menu-toggle__lines::before,
  .public-menu-toggle__lines::after,
  .entry-card,
  .public-button {
    transition: none;
  }
}