@font-face {
  font-family: Manrope;
  src: url("assets/fonts/manrope.ttf") format("truetype");
  font-style: normal;
  font-weight: 200 800;
  font-display: swap;
}
@font-face {
  font-family: Inter;
  src: url("assets/fonts/inter.ttf") format("truetype");
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
}
:root {
  --ink: #0a1035;
  --muted: #36456b;
  --blue: #005cff;
  --navy: #001428;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: 22px;
}
body {
  margin: 0;
  color: var(--ink);
  font-family: Manrope, Arial, sans-serif;
  background: #fff;
  font-size: 14px;
  font-optical-sizing: none;
}
button,
input {
  font: inherit;
}
button,
a {
  -webkit-tap-highlight-color: transparent;
}
button {
  cursor: pointer;
}
a {
  color: inherit;
  text-decoration: none;
}
button:focus-visible,
a:focus-visible,
input:focus-visible,
summary:focus-visible {
  outline: 3px solid #20bfff;
  outline-offset: 4px;
}
.icon {
  width: 26px;
  height: 26px;
  flex-shrink: 0;
  object-fit: contain;
}
.skip-link {
  position: fixed;
  left: 16px;
  top: -80px;
  padding: 12px;
  background: white;
  z-index: 10;
}
.skip-link:focus {
  top: 10px;
}
.site-header {
  height: 50px;
  background: #fff;
  border-bottom: 1px solid #d9e3f0;
}
.header-inner {
  max-width: 928px;
  margin: auto;
  height: 100%;
  display: grid;
  grid-template-columns: 316px 1fr 135px;
  align-items: center;
  gap: 20px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 750;
  letter-spacing: -0.45px;
  white-space: nowrap;
}
.brand-icon {
  width: 34px;
  height: 37px;
  object-fit: contain;
}
.header-inner nav {
  display: flex;
  align-items: center;
  gap: 25px;
  font-size: 10.5px;
  white-space: nowrap;
}
.nav-link {
  border: 0;
  background: transparent;
  padding: 0;
  color: inherit;
}
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 42px;
  padding: 8px 26px;
  border: 1px solid var(--blue);
  border-radius: 5px;
  background: var(--blue);
  color: #fff;
  font-weight: 600;
  font-size: 12px;
  transition:
    background 0.15s,
    transform 0.15s;
}
.button:hover {
  background: #0049d3;
  transform: translateY(-1px);
}
.button .icon {
  width: 23px;
  height: 24px;
}
.header-cta {
  font-size: 10px;
  min-height: 33px;
  padding: 6px 13px;
  gap: 7px;
}
.header-cta .icon {
  width: 16px;
  height: 17px;
}
.hero {
  background: radial-gradient(
    ellipse at 80% 40%,
    #00315b 0%,
    #001a34 45%,
    #00101f 85%
  );
  overflow: hidden;
  color: #fff;
}
.hero-inner {
  max-width: 1024px;
  margin: auto;
  position: relative;
  min-height: 393px;
  display: flex;
  align-items: flex-start;
}
.hero-copy {
  position: relative;
  z-index: 2;
  width: 49%;
  padding: 24px 0 44px 57px;
}
.eyebrow {
  color: #a2ecff;
  text-transform: uppercase;
  font-size: 12px;
  letter-spacing: 1.65px;
  margin: 0 0 4px;
  line-height: 17px;
}
h1 {
  font-family: Inter, Arial, sans-serif;
  font-size: 62px;
  font-weight: 800;
  letter-spacing: 0;
  font-kerning: normal;
  line-height: 0.87;
  margin: 6px 0 7px;
}
h1 span {
  letter-spacing: -0.5px;
  color: #49a7fa;
}
p {
  line-height: 1.38;
}
.hero-description {
  font-size: 13.5px;
  line-height: 19px;
  margin: 0;
  max-width: 390px;
}
.benefits {
  list-style: none;
  margin: 16px 0 18px;
  padding: 0;
  display: flex;
  gap: 16px;
  align-items: center;
  width: 455px;
}
.benefits li {
  display: flex;
  gap: 7px;
  align-items: center;
  font-size: 10px;
  line-height: 1.5;
  white-space: nowrap;
}
.benefit-icon {
  width: 33px;
  height: 34px;
  flex-shrink: 0;
  object-fit: contain;
}
.hero-actions {
  display: flex;
  gap: 19px;
  white-space: nowrap;
}
.hero-actions .button:first-child {
  min-width: 215px;
}
.button-outline {
  background: transparent;
  border-color: #cde4ff;
  min-width: 178px;
}
.button-outline:hover {
  background: #123354;
}
.section-wrap {
  max-width: 976px;
  margin: auto;
}
.topics {
  padding-top: 10px;
}
h2 {
  font-size: 23.5px;
  line-height: 1.2;
  letter-spacing: -0.6px;
  margin: 0 0 2px;
  font-weight: 800;
}
.topics h2,
.section-intro {
  text-align: center;
}
.section-intro {
  color: var(--muted);
  font-size: 12px;
  margin: 3px 0 8px;
}
.topic-grid {
  display: grid;
  grid-template-columns: 150fr 155fr 159fr 160fr 161fr 153fr;
  grid-template-rows: 114px repeat(4, 108px);
  gap: 7px 8px;
}
.topic-card {
  background: linear-gradient(120deg, #f0f8ff, #eef7fb);
  text-align: center;
  border-radius: 5px;
  padding: 4px 5px 6px;
  min-width: 0;
}
.topic-icon {
  display: block;
  width: 44px;
  height: 42px;
  margin: 0 auto;
  object-fit: contain;
}
.topic-card h3 {
  font-size: 11.5px;
  letter-spacing: -0.35px;
  line-height: 1.2;
  margin: 0 0 4px;
  font-weight: 750;
  white-space: nowrap;
}
.topic-card:nth-child(9) h3,
.topic-card:nth-child(12) h3,
.topic-card:nth-child(13) h3,
.topic-card:nth-child(18) h3,
.topic-card:nth-child(21) h3,
.topic-card:nth-child(29) h3 {
  font-size: 10px;
}
.topic-card p {
  font-size: 11.5px;
  font-weight: 450;
  line-height: 13px;
  color: var(--muted);
  margin: 0 auto;
  max-width: 136px;
}
.topic-card:nth-child(3),
.topic-card:nth-child(8),
.topic-card:nth-child(18),
.topic-card:nth-child(24),
.topic-card:nth-child(26),
.topic-card:nth-child(27) {
  background: #f4f2ff;
}
.topic-card:nth-child(4),
.topic-card:nth-child(28),
.topic-card:nth-child(29) {
  background: #f2f9f7;
}
.topic-card:nth-child(5),
.topic-card:nth-child(16) {
  background: #fff8f0;
}
.details {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
  padding: 13px 13px 10px;
}
.details h2 {
  font-size: 21px;
  margin-bottom: 6px;
}
.chapter-list {
  list-style: none;
  padding: 0;
  margin: 0;
  counter-reset: chapter;
}
.chapter-list li {
  display: flex;
  gap: 15px;
  counter-increment: chapter;
  margin-bottom: 3px;
  align-items: flex-start;
}
.chapter-list li:before {
  content: counter(chapter);
  min-width: 32px;
  height: 26px;
  border-radius: 5px;
  background: #edf6ff;
  color: var(--blue);
  display: grid;
  place-items: center;
  font-size: 18px;
  font-weight: 700;
}
.chapter-list h3 {
  margin: 0;
  font-size: 12px;
  line-height: 13px;
  font-weight: 650;
  letter-spacing: -0.15px;
}
.chapter-list p {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 14px;
  letter-spacing: -0.15px;
}
.preview-art {
  display: block;
  width: 100%;
  aspect-ratio: 2/1;
  border: 0;
  padding: 0;
  background: #fff;
  margin: 0;
}
.preview-art img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}
.sample-button {
  color: var(--blue);
  background: #fff;
  min-height: 34px;
  padding: 6px 23px;
  margin: 7px auto 0;
  display: flex;
  width: max-content;
  font-size: 11px;
}
.sample-button:hover {
  background: #eef5ff;
}
.download-banner {
  background: radial-gradient(ellipse at 65% 100%, #003875, #001329 70%);
  color: #fff;
}
.banner-inner {
  max-width: 916px;
  margin: auto;
  min-height: 98px;
  display: flex;
  gap: 32px;
  align-items: center;
}
.banner-icon {
  width: 54px;
  height: 66px;
  object-fit: contain;
}
.banner-inner h2 {
  font-size: 21.5px;
  margin: 0 0 3px;
  letter-spacing: 0;
}
.banner-inner p {
  font-size: 13px;
  margin: 0;
}
.banner-inner .button {
  margin-left: auto;
  min-width: 250px;
  min-height: 52px;
  font-size: 16px;
}
.banner-inner .button .icon {
  width: 26px;
  height: 27px;
}
dialog {
  border: 1px solid #dfe9f4;
  border-radius: 16px;
  padding: 32px;
  color: var(--ink);
  width: calc(100% - 32px);
  max-width: 450px;
  box-shadow: 0 25px 100px #00132950;
}
dialog::backdrop {
  background: #001329ba;
  backdrop-filter: blur(5px);
}
dialog h2 {
  font-size: 25px;
  margin: 12px 0;
}
dialog p {
  color: var(--muted);
}
.close-dialog {
  position: absolute;
  right: 12px;
  top: 10px;
  background: transparent;
  border: 0;
  font-size: 28px;
  color: #455573;
  padding: 0 6px;
}
.dialog-heading-icon {
  display: grid;
  place-items: center;
  background: #edf6ff;
  color: var(--blue);
  width: 48px;
  height: 48px;
  border-radius: 12px;
}
form > label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  margin: 20px 0 7px;
}
input[type="email"] {
  display: block;
  width: 100%;
  border: 1px solid #b9c9dd;
  border-radius: 6px;
  padding: 13px 12px;
  font-size: 16px;
}
.consent {
  display: flex;
  gap: 8px;
  align-items: flex-start;
  font-size: 12px;
  font-weight: 400;
  line-height: 1.5;
}
.consent input {
  margin-top: 3px;
  accent-color: var(--blue);
}
.submit-button {
  width: 100%;
  margin-top: 14px;
}
.button:disabled {
  cursor: wait;
  opacity: 0.65;
  transform: none;
}
.form-status {
  font-size: 13px;
  margin-bottom: 0;
}
.text-link {
  color: var(--blue);
  padding: 0;
  border: 0;
  background: transparent;
  text-decoration: underline;
}
.honeypot {
  position: absolute;
  left: -10000px;
}
.wide-dialog {
  max-width: 760px;
}
.small-note {
  font-size: 12px;
}
.wide-dialog > .button {
  display: flex;
  width: max-content;
  margin: auto;
}
details {
  padding: 14px 0;
  border-bottom: 1px solid #e6edf5;
}
summary {
  cursor: pointer;
  font-weight: 600;
}
details p {
  margin-bottom: 0;
}
body:has(dialog[open]) {
  overflow: hidden;
}
[hidden] {
  display: none !important;
}
.dialog-heading-icon {
  background: var(--blue);
}
@media (min-width: 1100px) {
  .hero-inner {
    max-width: 1100px;
    min-height: 422px;
  }
  .section-wrap {
    max-width: 1048px;
  }
  .header-inner {
    max-width: 996px;
  }
  .topic-grid {
    grid-template-rows: 118px repeat(4, 118px);
  }
  .topic-card {
    padding-top: 8px;
  }
  .topic-card h3 {
    font-size: 12px;
  }
  .topic-card p {
    font-size: 11.5px;
    line-height: 13px;
  }
  .banner-inner {
    max-width: 990px;
    min-height: 105px;
  }
  .details {
    padding-top: 16px;
    padding-bottom: 16px;
  }
  .chapter-list li {
    margin-bottom: 5px;
  }
}
@media (max-width: 950px) {
  .header-inner {
    padding: 0 22px;
    gap: 12px;
  }
  .header-inner nav {
    gap: 14px;
  }
  .brand {
    font-size: 15px;
  }
  .section-wrap {
    margin-inline: 20px;
  }
  .banner-inner {
    padding: 15px 28px;
    gap: 20px;
  }
  .banner-inner .button {
    min-width: 220px;
  }
}
@media (min-width: 761px) and (max-width: 950px) {
  .header-inner {
    gap: 10px;
    padding-inline: 15px;
  }
  .header-inner nav {
    gap: 12px;
    font-size: 10px;
  }
  .brand {
    font-size: 14px;
    gap: 6px;
  }
  .header-cta {
    padding: 6px 8px;
    font-size: 10px;
  }
  .topic-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    grid-template-rows: none;
    grid-auto-rows: minmax(124px, auto);
  }
  .topic-card {
    padding: 8px;
  }
  .topic-card h3 {
    white-space: normal;
    font-size: 12px !important;
  }
  .topic-card p {
    font-size: 12px;
    line-height: 14px;
    max-width: 190px;
  }
  .hero-copy {
    width: 49%;
    padding: 26px 0 26px 28px;
  }
  h1 {
    font-size: 52px;
  }
  .benefits {
    width: auto;
    flex-wrap: wrap;
    gap: 10px;
  }
  .benefits li {
    width: 45%;
  }
  .hero-actions {
    flex-wrap: wrap;
    gap: 10px;
  }
  .hero-actions .button {
    width: 100%;
    max-width: 300px;
  }
  .hero-description {
    font-size: 13px;
  }
}
@media (max-width: 760px) {
  .site-header {
    height: auto;
    min-height: 62px;
  }
  .header-inner {
    min-height: 62px;
    padding: 10px 18px;
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 10px;
  }
  .brand {
    grid-column: 1/-1;
    font-size: 16px;
  }
  .header-inner nav {
    grid-row: 2;
    grid-column: 1;
    justify-content: flex-start;
    gap: 13px;
    font-size: 11px;
  }
  .header-cta {
    grid-row: 2;
    grid-column: 2;
    padding: 7px;
    font-size: 10px;
  }
  .header-cta .icon {
    display: none;
  }
  .hero-inner {
    display: flex;
    flex-direction: column;
  }
  .hero-copy {
    width: 100%;
    padding: 30px 25px 0;
    max-width: 540px;
    margin-inline: auto;
  }
  .eyebrow {
    font-size: 11px;
  }
  h1 {
    font-size: clamp(46px, 10vw, 62px);
    line-height: 0.96;
    letter-spacing: -0.5px;
    margin-bottom: 14px;
  }
  .hero-description {
    max-width: 480px;
    font-size: 14px;
    line-height: 1.45;
  }
  .benefits {
    width: auto;
    gap: 14px;
    flex-wrap: wrap;
    margin-bottom: 20px;
  }
  .benefits li {
    font-size: 10px;
  }
  .hero-actions {
    gap: 12px;
  }
  .hero-actions .button {
    font-size: 11px;
    padding: 12px;
    flex: 1;
    min-width: 0;
  }
  .topics {
    padding-top: 22px;
  }
  .section-wrap {
    margin-inline: 16px;
  }
  h2 {
    font-size: 23px;
  }
  .section-intro {
    font-size: 13px;
    line-height: 1.5;
    margin: 7px 0 16px;
  }
  .topic-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    grid-template-rows: none;
    gap: 8px;
  }
  .topic-card {
    min-height: 150px;
    padding: 9px 7px 14px;
  }
  .topic-card h3 {
    font-size: 11px !important;
    white-space: normal;
    min-height: 27px;
    display: flex;
    align-items: center;
    justify-content: center;
  }
  .topic-card p {
    font-size: 11px;
    line-height: 1.3;
  }
  .details {
    grid-template-columns: 1fr;
    padding: 26px 0;
    gap: 28px;
  }
  .details h2 {
    font-size: 23px;
  }
  .chapter-list li {
    gap: 14px;
    margin-bottom: 9px;
  }
  .chapter-list h3,
  .chapter-list p {
    font-size: 13px;
    line-height: 1.35;
  }
  .chapter-list li:before {
    height: 32px;
  }
  .preview-art {
    max-width: 560px;
    margin: auto;
  }
  .banner-inner {
    flex-wrap: wrap;
    padding: 24px;
    gap: 16px;
  }
  .banner-inner h2 {
    font-size: 21px;
  }
  .banner-inner p {
    font-size: 12px;
  }
  .banner-icon {
    width: 40px;
    height: 52px;
  }
  .banner-inner .button {
    width: 100%;
    margin: 0;
    font-size: 16px;
  }
  .sample-button {
    margin-top: 14px;
  }
}
@media (max-width: 380px) {
  .brand {
    font-size: 14px;
    gap: 5px;
  }
  .brand-icon {
    width: 29px;
  }
  .header-inner {
    padding-inline: 12px;
  }
  .header-inner nav {
    gap: 9px;
    font-size: 10px;
  }
  .header-cta {
    font-size: 9px;
    padding: 6px;
  }
  .topic-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .benefits {
    gap: 12px;
  }
  .benefits li {
    width: 44%;
  }
  .hero-actions {
    flex-direction: column;
  }
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *:before,
  *:after {
    transition: none !important;
  }
}

@media (min-width: 951px) {
  .benefits {
    display: grid;
    grid-template-columns: 98px 94px 92px 113px;
    gap: 16px;
  }
  .benefits li {
    gap: 6px;
  }
}

.topic-line {
  display: block;
  white-space: nowrap;
}
@media (min-width: 951px) {
  .topic-card:nth-child(14) p,
  .topic-card:nth-child(23) p {
    font-size: 10.5px;
  }
  .topic-card:nth-child(13) p,
  .topic-card:nth-child(18) p {
    font-size: 11px;
  }
}
@media (max-width: 950px) {
  .topic-line {
    display: inline;
    white-space: normal;
  }
  .topic-line:not(:last-child):after {
    content: " ";
  }
}

.download-banner {
  position: relative;
  isolation: isolate;
  overflow: hidden;
}
.download-banner:before {
  content: "";
  position: absolute;
  z-index: -1;
  left: calc(50% - 2px);
  top: 0;
  width: 219px;
  height: 100%;
  background: url("assets/footer-network.png") center/100% 100% no-repeat;
  mask-image: linear-gradient(
    90deg,
    transparent,
    #000 16%,
    #000 90%,
    transparent
  );
}
.hero-signup-note {
  position: absolute;
  left: 57px;
  top: 358px;
  font-size: 10.5px;
  line-height: 16px;
  color: #cde4ff;
  margin: 0;
  white-space: nowrap;
}
@media (min-width: 951px) {
  .topic-card:nth-child(14) p {
    font-size: 9.6px;
  }
  .topic-card:nth-child(18) p {
    font-size: 10.2px;
  }
  .topic-card:nth-child(23) p {
    font-size: 9.7px;
  }
  .topic-card:nth-child(25) p {
    font-size: 11px;
  }
  .topic-card p {
    max-width: none;
  }
}
@media (max-width: 950px) {
  .hero-signup-note {
    position: static;
    white-space: normal;
    margin: 12px 0 0;
  }
}
@media (max-width: 760px) {
  .header-cta {
    min-width: 98px;
    white-space: normal;
  }
  .download-banner:before {
    opacity: 0.55;
  }
}
@media (max-width: 380px) {
  .header-inner nav {
    grid-row: 3;
    grid-column: 1/-1;
    justify-content: space-between;
    gap: 8px;
  }
  .header-cta {
    grid-row: 2;
    grid-column: 1/-1;
    justify-self: end;
    white-space: nowrap;
  }
  .brand {
    min-width: 0;
  }
}

@media (min-width: 951px) {
  .header-cta {
    padding-inline: 8px;
    gap: 5px;
  }
  .details #preview > .preview-art {
    width: calc(100% + 26px);
    max-width: none;
    margin-left: -13px;
  }
  .sample-button {
    width: 204px;
    transform: translateX(-9px);
    padding-inline: 12px;
  }
}
@media (min-width: 761px) and (max-width: 950px) {
  .header-inner {
    display: flex;
  }
}
@media (min-width: 951px) {
  .hero-actions .button:first-child {
    width: 215px;
    padding-inline: 20px;
    flex-shrink: 0;
  }
}
/* Keep the live benefit label legible over the book artwork. */
@media (min-width: 951px) {
  .benefits li:last-child > span {
    position: relative;
    background: #00172d;
    box-shadow: 0 0 4px 2px #00172d;
    border-radius: 2px;
  }
}

/* Standalone transparent book artwork; no screenshot cropping is required. */
.hero-art {
  position: absolute;
  right: 0;
  top: 0;
  width: 57.23%;
  aspect-ratio: 3/2;
  pointer-events: none;
}
.hero-art img {
  display: block;
  width: 100%;
  height: auto;
}
@media (min-width: 761px) and (max-width: 950px) {
  .hero-art {
    top: 12%;
  }
}
@media (max-width: 760px) {
  .hero-art {
    position: relative;
    top: auto;
    right: auto;
    width: 100%;
    max-width: 586px;
    align-self: center;
    margin-top: 14px;
  }
}