:root {
  --canvas: #f3f8fb;
  --surface: #ffffff;
  --surface-raised: #f8fbfd;
  --ink: #07111e;
  --muted: #526579;
  --primary: #087c96;
  --primary-bright: #35c2d9;
  --primary-soft: #ddf5fa;
  --ready: #0e7658;
  --ready-soft: #ddf7ec;
  --border: #d5e0e8;
  --warning: #8a3d2f;
  --warning-soft: #fff0ed;
  --font-sans: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  background: var(--canvas);
  color: var(--ink);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
}
a {
  color: inherit;
  text-decoration: none;
}
button,
a {
  -webkit-tap-highlight-color: transparent;
}
img {
  display: block;
  max-width: 100%;
}
h1,
h2,
h3,
p {
  text-wrap: pretty;
}

.site-frame {
  min-height: 100vh;
  overflow: hidden;
}
.page-width {
  width: min(1180px, calc(100% - 48px));
  margin-inline: auto;
}
.site-header {
  min-height: 94px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}
.brand img {
  width: 176px;
  height: auto;
}
.site-header nav {
  display: flex;
  align-items: center;
  gap: 32px;
  color: var(--muted);
  font-size: 0.94rem;
  font-weight: 600;
}
.site-header nav a,
.footer-links a,
.text-link {
  transition: color 160ms ease;
}
.site-header nav a:hover,
.footer-links a:hover,
.text-link:hover {
  color: var(--primary);
}

.hero {
  min-height: 670px;
  display: grid;
  grid-template-columns: 1.04fr 0.96fr;
  align-items: center;
  gap: clamp(30px, 6vw, 96px);
  padding-block: 54px 100px;
}
.eyebrow {
  margin: 0 0 20px;
  color: var(--primary);
  font-size: 0.76rem;
  font-weight: 760;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.hero h1,
.document-heading h1,
.support-heading h1 {
  margin: 0;
  font-size: clamp(3rem, 6.7vw, 5.6rem);
  font-weight: 680;
  letter-spacing: -0.065em;
  line-height: 0.98;
}
.hero-lede,
.document-heading > p:last-child,
.support-heading > p {
  max-width: 650px;
  margin: 30px 0 0;
  color: var(--muted);
  font-size: clamp(1.05rem, 1.7vw, 1.28rem);
  line-height: 1.65;
}
.hero-actions {
  margin-top: 38px;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 25px;
}
.button {
  min-height: 52px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 23px;
  border-radius: 14px;
  font-size: 0.95rem;
  font-weight: 720;
  transition:
    transform 160ms ease,
    box-shadow 160ms ease,
    background 160ms ease;
}
.button-primary {
  background: var(--primary);
  color: white;
  box-shadow: 0 13px 30px rgb(8 124 150 / 18%);
}
.button-primary:hover {
  background: #066f87;
  box-shadow: 0 16px 36px rgb(8 124 150 / 24%);
  transform: translateY(-2px);
}
.text-link {
  color: var(--ink);
  font-size: 0.94rem;
  font-weight: 690;
}

.hero-art {
  min-height: 470px;
  display: grid;
  place-items: center;
  position: relative;
}
.hero-art::before {
  content: '';
  width: 390px;
  height: 390px;
  position: absolute;
  border-radius: 999px;
  background: radial-gradient(circle, rgb(53 194 217 / 24%), rgb(53 194 217 / 0%) 68%);
  filter: blur(4px);
}
.book-scene {
  width: min(410px, 82vw);
  aspect-ratio: 0.94;
  position: relative;
  transform: rotate(4deg);
}
.page {
  position: absolute;
  inset: 0;
  border: 1px solid rgb(180 197 210 / 70%);
  border-radius: 34px 55px 42px 30px;
  box-shadow: 0 28px 70px rgb(7 17 30 / 10%);
}
.page-back {
  background: #cbeaf2;
  transform: translate(34px, 30px) rotate(5deg);
}
.page-middle {
  background: #e3f4f8;
  transform: translate(17px, 15px) rotate(2.5deg);
}
.page-front {
  padding: 52px 47px;
  background: rgb(255 255 255 / 92%);
  backdrop-filter: blur(8px);
}
.page-front > img {
  width: 112px;
  border-radius: 25px;
  box-shadow: 0 12px 27px rgb(7 17 30 / 13%);
}
.record-lines {
  margin-top: 44px;
  display: grid;
  gap: 15px;
}
.record-lines span {
  height: 11px;
  border-radius: 99px;
  background: var(--border);
}
.record-lines span:nth-child(1) {
  width: 72%;
}
.record-lines span:nth-child(2) {
  width: 89%;
}
.record-lines span:nth-child(3) {
  width: 55%;
}
.ready-mark {
  width: fit-content;
  margin-top: 35px;
  padding: 10px 15px;
  border-radius: 99px;
  background: var(--ready-soft);
  color: var(--ready);
  font-size: 0.82rem;
  font-weight: 760;
}

.principles-section {
  padding-block: 110px 120px;
  background: var(--ink);
  color: white;
}
.principles-section .eyebrow {
  color: var(--primary-bright);
}
.section-heading {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 40px;
  align-items: start;
}
.section-heading h2,
.beta-card h2,
.support-note h2 {
  margin: 0;
  font-size: clamp(2.2rem, 4.6vw, 4.3rem);
  font-weight: 640;
  letter-spacing: -0.055em;
  line-height: 1.04;
}
.principle-grid {
  margin-top: 85px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: rgb(255 255 255 / 16%);
}
.principle-card {
  min-height: 310px;
  padding: 35px 33px;
  background: var(--ink);
}
.card-number {
  display: block;
  margin-bottom: 80px;
  color: var(--primary-bright);
  font-size: 0.72rem;
  font-weight: 750;
  letter-spacing: 0.14em;
}
.principle-card h3 {
  margin: 0 0 16px;
  font-size: 1.34rem;
  font-weight: 630;
}
.principle-card p {
  margin: 0;
  color: #aebdca;
  font-size: 0.97rem;
  line-height: 1.65;
}

.beta-section {
  padding-block: 110px;
}
.beta-card {
  display: grid;
  grid-template-columns: 1.25fr 0.75fr;
  gap: clamp(40px, 7vw, 110px);
  align-items: end;
  padding: clamp(34px, 6vw, 72px);
  border: 1px solid var(--border);
  border-radius: 35px;
  background: var(--surface);
  box-shadow: 0 30px 80px rgb(7 17 30 / 6%);
}
.beta-card h2 {
  font-size: clamp(2.3rem, 4vw, 3.8rem);
}
.beta-copy p {
  margin: 0 0 23px;
  color: var(--muted);
  line-height: 1.65;
}
.beta-copy a {
  color: var(--primary);
  font-weight: 700;
}

.site-footer {
  padding-block: 60px 44px;
  border-top: 1px solid var(--border);
  background: var(--surface-raised);
}
.footer-inner {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 42px;
  align-items: start;
}
.footer-inner img {
  width: 145px;
}
.footer-inner > div:first-child p,
.fine-print {
  color: var(--muted);
  font-size: 0.84rem;
}
.footer-links {
  display: flex;
  gap: 27px;
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 620;
}
.fine-print {
  grid-column: 1 / -1;
  margin: 6px 0 0;
  padding-top: 25px;
  border-top: 1px solid var(--border);
}

.document-page,
.support-page {
  padding-block: 95px 130px;
}
.document-heading,
.support-heading {
  max-width: 900px;
}
.document-heading h1,
.support-heading h1 {
  font-size: clamp(3.4rem, 7vw, 6.7rem);
}
.document-layout {
  margin-top: 100px;
  display: grid;
  grid-template-columns: 280px minmax(0, 700px);
  gap: clamp(50px, 9vw, 130px);
  align-items: start;
}
.document-layout aside {
  position: sticky;
  top: 35px;
  padding: 25px;
  border: 1px solid #9bcbd6;
  border-radius: 20px;
  background: var(--primary-soft);
  color: var(--primary);
}
.document-layout aside strong {
  display: block;
  margin-bottom: 10px;
  font-size: 0.86rem;
}
.document-layout aside p {
  margin: 0;
  font-size: 0.89rem;
  line-height: 1.55;
}
.prose section + section {
  margin-top: 58px;
  padding-top: 58px;
  border-top: 1px solid var(--border);
}
.prose h2 {
  margin: 0 0 20px;
  font-size: 1.55rem;
  letter-spacing: -0.025em;
}
.prose p {
  margin: 0;
  color: var(--muted);
  font-size: 1.03rem;
  line-height: 1.78;
}
.prose p + p {
  margin-top: 18px;
}
.prose a {
  color: var(--primary);
  font-weight: 650;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.support-heading .button {
  margin-top: 38px;
}
.support-grid {
  margin-top: 105px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
}
.support-card {
  min-height: 390px;
  padding: clamp(30px, 5vw, 53px);
  border-radius: 30px;
}
.support-card-safe {
  border: 1px solid #9bcbd6;
  background: var(--primary-soft);
}
.support-card-warning {
  border: 1px solid #efc0b9;
  background: var(--warning-soft);
}
.card-label {
  display: block;
  margin-bottom: 55px;
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 760;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}
.support-card h2 {
  max-width: 400px;
  margin: 0 0 26px;
  font-size: clamp(1.7rem, 3vw, 2.5rem);
  letter-spacing: -0.04em;
}
.support-card ul {
  margin: 0;
  padding: 0;
  list-style: none;
  color: var(--muted);
  line-height: 1.8;
}
.support-card li {
  position: relative;
  padding-left: 22px;
}
.support-card li::before {
  content: '';
  width: 7px;
  height: 7px;
  position: absolute;
  top: 0.7em;
  left: 0;
  border-radius: 50%;
  background: var(--primary);
}
.support-card-warning li::before {
  background: var(--warning);
}
.support-note {
  margin-top: 24px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: end;
  padding: clamp(34px, 6vw, 70px);
  border-radius: 30px;
  background: var(--ink);
  color: white;
}
.support-note .eyebrow {
  color: var(--primary-bright);
}
.support-note h2 {
  font-size: clamp(2rem, 3.5vw, 3.3rem);
}
.support-note > p {
  margin: 0;
  color: #afbdc9;
  line-height: 1.7;
}

@media (max-width: 850px) {
  .hero {
    grid-template-columns: 1fr;
    padding-top: 70px;
  }
  .hero-art {
    min-height: 450px;
  }
  .section-heading,
  .beta-card,
  .document-layout,
  .support-note {
    grid-template-columns: 1fr;
  }
  .principle-grid {
    grid-template-columns: 1fr;
  }
  .principle-card {
    min-height: auto;
  }
  .card-number {
    margin-bottom: 50px;
  }
  .document-layout aside {
    position: static;
  }
}

@media (max-width: 680px) {
  .page-width {
    width: min(100% - 32px, 1180px);
  }
  .site-header {
    min-height: 78px;
  }
  .brand img {
    width: 145px;
  }
  .site-header nav {
    gap: 18px;
    font-size: 0.86rem;
  }
  .hero {
    min-height: auto;
    padding-block: 68px 75px;
  }
  .hero h1 {
    font-size: clamp(3rem, 15vw, 4.6rem);
  }
  .hero-actions {
    align-items: flex-start;
    flex-direction: column;
  }
  .hero-art {
    min-height: 360px;
  }
  .page-front {
    padding: 35px;
  }
  .page-front > img {
    width: 88px;
  }
  .record-lines {
    margin-top: 30px;
  }
  .principles-section,
  .beta-section {
    padding-block: 78px;
  }
  .principle-grid {
    margin-top: 55px;
  }
  .beta-card {
    padding: 34px 27px;
    border-radius: 25px;
  }
  .footer-inner,
  .support-grid {
    grid-template-columns: 1fr;
  }
  .footer-links {
    flex-wrap: wrap;
  }
  .document-page,
  .support-page {
    padding-block: 65px 90px;
  }
  .document-heading h1,
  .support-heading h1 {
    font-size: clamp(3.2rem, 16vw, 5rem);
  }
  .document-layout,
  .support-grid {
    margin-top: 70px;
  }
  .support-card {
    min-height: auto;
  }
  .card-label {
    margin-bottom: 38px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}

@media (prefers-contrast: more) {
  :root {
    --muted: #304355;
    --border: #879cac;
  }
}