:root {
  --navy: #0c1e33;
  --brand: #123a63;
  --brand-2: #0b5bd3;
  --blue-soft: #e3eaf3;
  --page: #ffffff;
  --surface: #f7f7f7;
  --ink: #0c1e33;
  --muted: #4a5568;
  --line: #e3e3e8;
  --green: #1b7a33;
  --max: 1120px;
  --text: 540px;
  --radius: 28px;
  --radius-sm: 16px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--page);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display",
    "SF Pro Text", "Helvetica Neue", Arial, sans-serif;
  font-size: 17px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
}

a:focus-visible,
summary:focus-visible {
  outline: 3px solid #2f7de1;
  outline-offset: 4px;
  border-radius: 4px;
}

.container {
  width: min(calc(100% - 48px), var(--max));
  margin-inline: auto;
}

.skip-link {
  position: absolute;
  top: -100px;
  left: 16px;
  z-index: 100;
  padding: 10px 14px;
  border-radius: 10px;
  background: var(--navy);
  color: #fff;
}

.skip-link:focus {
  top: 16px;
}

.site-header {
  border-bottom: 1px solid var(--line);
  background: rgba(255,255,255,.96);
}

.header-inner {
  min-height: 84px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--ink);
  font-size: 20px;
  font-weight: 750;
  letter-spacing: -.4px;
  text-decoration: none;
}

.brand img {
  width: 40px;
  height: 40px;
  border-radius: 9px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav a {
  color: var(--ink);
  font-size: 15px;
  font-weight: 550;
  text-decoration: none;
}

.nav a:hover {
  color: var(--brand-2);
}

.pill {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  padding: 8px 16px;
  border-radius: 999px;
  background: var(--blue-soft);
  color: var(--brand);
  font-size: 14px;
  font-weight: 700;
}

.hero {
  padding: clamp(56px, 7vw, 96px) 0 clamp(72px, 8vw, 112px);
  overflow: hidden;
}

.hero-grid,
.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, .92fr);
  align-items: center;
  gap: clamp(52px, 8vw, 112px);
}

.hero-copy {
  max-width: 600px;
}

.hero h1 {
  margin: 24px 0 0;
  font-size: clamp(54px, 5.7vw, 78px);
  line-height: 1.02;
  letter-spacing: -.045em;
}

.hero h1 span {
  color: var(--brand);
}

.lead {
  max-width: 550px;
  margin: 26px 0 0;
  color: var(--muted);
  font-size: 21px;
  line-height: 1.55;
}

.hero-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 22px;
  margin-top: 30px;
}

.store-button {
  min-height: 58px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 22px;
  border-radius: 14px;
  background: #000;
  color: #fff;
  font-weight: 650;
  text-decoration: none;
}

.store-button.is-disabled {
  cursor: default;
}

.text-link {
  color: var(--brand-2);
  font-weight: 650;
  text-decoration: none;
}

.checks {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.checks li {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--ink);
  font-size: 15px;
  font-weight: 600;
}

.checks li::before {
  content: "✓";
  width: 20px;
  height: 20px;
  display: grid;
  place-items: center;
  border: 1.5px solid var(--green);
  border-radius: 50%;
  color: var(--green);
  font-size: 12px;
  font-weight: 800;
}

.disclaimer {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.phone-stage {
  position: relative;
  min-height: 720px;
  display: grid;
  place-items: center;
}

.phone-stage::before,
.phone-stage::after {
  content: "";
  position: absolute;
  width: min(100%, 470px);
  height: 650px;
  border-radius: 44px;
}

.phone-stage::before {
  background: #dce5f0;
  transform: rotate(-5deg);
}

.phone-stage::after {
  background: var(--brand);
}

.phone-stage img {
  position: relative;
  z-index: 2;
  width: min(78%, 380px);
  filter: drop-shadow(0 30px 36px rgba(12,30,51,.28));
}

.section {
  padding: clamp(72px, 8vw, 112px) 0;
}

.section.alt {
  background: var(--surface);
}

.section.navy {
  background: var(--brand);
  color: #fff;
}

.section-head {
  max-width: 720px;
  margin: 0 auto 52px;
  text-align: center;
}

.section-head.left {
  max-width: var(--text);
  margin: 0 0 34px;
  text-align: left;
}

.section h2 {
  margin: 18px 0 0;
  color: var(--ink);
  font-size: clamp(38px, 4.3vw, 54px);
  line-height: 1.08;
  letter-spacing: -.035em;
}

.section.navy h2 {
  color: #fff;
}

.section-intro {
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 19px;
  line-height: 1.55;
}

.section.navy .section-intro {
  color: #bbd0ea;
}

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.step {
  padding: 30px;
  border-radius: var(--radius);
  background: var(--surface);
}

.step {
  display: flex;
  min-width: 0;
  flex-direction: column;
  padding: 26px;
  overflow: hidden;
  border: 1px solid var(--line);
  background: #fff;
  box-shadow: 0 16px 34px rgba(12, 30, 51, .07);
}

.step-number {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  margin-bottom: 18px;
  border-radius: 50%;
  background: var(--brand);
  color: #fff;
  font-weight: 750;
}

.step h3,
.copy h3 {
  margin: 0;
  color: var(--ink);
  font-size: 25px;
  line-height: 1.2;
  letter-spacing: -.02em;
}

.step p,
.copy p {
  color: var(--muted);
}

.step p {
  margin: 10px 0 22px;
  font-size: 15px;
}

.step-preview {
  min-height: 176px;
  margin-top: auto;
  padding: 18px;
  border: 1px solid #e5e7eb;
  border-radius: 18px;
  background: #f8f8f9;
  color: #111827;
}

.preview-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 18px;
  color: #697386;
  font-size: 11px;
  font-weight: 650;
}

.preview-meta span:first-child {
  padding: 4px 7px;
  border-radius: 999px;
  background: #e3edf8;
  color: var(--brand);
}

.step-preview > strong {
  display: block;
  font-size: 17px;
  line-height: 1.35;
}

.answer-preview {
  display: grid;
  gap: 8px;
}

.answer-preview > span {
  display: grid;
  grid-template-columns: 24px 1fr 20px;
  align-items: center;
  gap: 9px;
  min-height: 31px;
  padding: 4px 8px;
  border: 1px solid #e5e7eb;
  border-radius: 11px;
  background: #fff;
}

.answer-preview b {
  width: 22px;
  height: 22px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: #f1f2f4;
  color: #89909a;
  font-size: 11px;
}

.answer-preview i {
  width: 82%;
  height: 6px;
  border-radius: 999px;
  background: #e4e6e9;
}

.answer-preview em {
  color: #16833c;
  font-style: normal;
  font-weight: 800;
}

.answer-preview .is-correct {
  border-color: #57cf7c;
  background: #effaf2;
}

.answer-preview .is-correct b {
  background: #75dda0;
  color: #fff;
}

.answer-preview .is-correct i {
  background: #a8dcb8;
}

.review-preview {
  display: grid;
  align-content: start;
  gap: 0;
  background: #fff;
}

.review-preview > strong {
  padding-bottom: 14px;
  border-bottom: 1px solid #e5e7eb;
  color: #117c32;
}

.review-preview > strong span {
  width: 23px;
  height: 23px;
  display: inline-grid;
  place-items: center;
  margin-right: 7px;
  border: 2px solid currentColor;
  border-radius: 50%;
  font-size: 13px;
}

.review-preview > div {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 14px 0;
  border-bottom: 1px solid #e5e7eb;
  font-size: 15px;
}

.review-preview > div span:last-child {
  margin-left: auto;
  color: #7a8491;
}

.document-mark {
  color: var(--brand);
}

.review-preview small {
  padding-top: 14px;
  color: #697386;
  text-align: center;
}

.split.reverse .visual {
  order: 2;
}

.split.reverse .copy {
  order: 1;
}

.visual {
  min-width: 0;
}



.copy {
  max-width: var(--text);
}

.copy h2 {
  margin-top: 18px;
}

.copy > p {
  margin-top: 22px;
  font-size: 19px;
  line-height: 1.6;
}

.source-note {
  margin-top: 22px;
  font-size: 15px !important;
}

.bullets {
  display: grid;
  gap: 14px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.bullets li {
  position: relative;
  padding-left: 36px;
  font-size: 17px;
}

.bullets li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 1px;
  width: 24px;
  height: 24px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--brand);
  color: #fff;
  font-size: 13px;
  font-weight: 800;
}





.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 28px;
}

.stat {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: #fff;
}

.stat strong {
  display: block;
  font-size: 31px;
  line-height: 1;
}

.stat span {
  display: block;
  margin-top: 7px;
  color: var(--muted);
  font-size: 14px;
}

.subject-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.subject-card {
  min-height: 150px;
  padding: 22px;
  border-radius: 20px;
  background: #fff;
  color: var(--ink);
}

.subject-card strong {
  display: block;
  font-size: 18px;
}

.subject-card span {
  display: block;
  margin-top: 7px;
  color: var(--muted);
  font-size: 15px;
}

.source-layout {
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  gap: 72px;
  align-items: center;
}

.source-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.source-tags span {
  padding: 8px 14px;
  border-radius: 999px;
  background: var(--blue-soft);
  color: var(--brand);
  font-size: 14px;
  font-weight: 650;
}

.source-cards {
  display: grid;
  gap: 14px;
}

.source-card {
  padding: 22px 24px;
  border-radius: 20px;
  background: var(--surface);
}

.source-card strong {
  display: block;
  font-size: 18px;
}

.source-card span {
  display: block;
  margin-top: 4px;
  color: var(--muted);
}

.faq {
  width: min(100%, 820px);
  margin: 0 auto;
}

.faq details {
  margin-bottom: 12px;
  padding: 22px 26px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: #fff;
}

.faq summary {
  color: var(--ink);
  font-size: 18px;
  font-weight: 650;
  cursor: pointer;
}

.faq p {
  margin: 14px 0 0;
  color: var(--muted);
}

.cta {
  text-align: center;
}

.cta .app-icon {
  width: 88px;
  height: 88px;
  margin: 0 auto 24px;
  border-radius: 20px;
}

.cta h2 {
  color: #fff;
}

.cta p {
  max-width: 600px;
  margin: 20px auto 28px;
  color: #bbd0ea;
  font-size: 19px;
}

.site-footer {
  padding: 58px 0 42px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 60px;
}

.footer-brand {
  max-width: 430px;
}

.footer-brand-row {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 750;
  font-size: 20px;
}

.footer-brand-row img {
  width: 40px;
  height: 40px;
  border-radius: 9px;
}

.footer-brand p {
  color: var(--muted);
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(3, auto);
  gap: 54px;
}

.footer-links strong,
.footer-links a {
  display: block;
}

.footer-links strong {
  margin-bottom: 12px;
  font-size: 14px;
}

.footer-links a {
  margin-top: 9px;
  color: var(--muted);
  font-size: 14px;
  text-decoration: none;
}

.footer-legal {
  margin-top: 38px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
}

@media (max-width: 900px) {
  .nav {
    display: none;
  }

  .hero-grid,
  .split,
  .source-layout {
    grid-template-columns: 1fr;
  }

  .hero-copy,
  .copy {
    max-width: 680px;
  }

  .phone-stage {
    min-height: 650px;
  }

  .split.reverse .visual,
  .split.reverse .copy {
    order: initial;
  }

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

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

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

@media (max-width: 600px) {
  .container {
    width: min(calc(100% - 32px), var(--max));
  }

  .header-inner {
    min-height: 68px;
  }

  .brand {
    font-size: 17px;
  }

  .brand img {
    width: 36px;
    height: 36px;
  }

  .hero {
    padding-top: 42px;
  }

  .hero h1 {
    font-size: clamp(44px, 13vw, 60px);
  }

  .lead {
    font-size: 18px;
  }

  .hero-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .store-button {
    width: 100%;
  }

  .text-link {
    text-align: center;
  }

  .checks {
    display: grid;
    gap: 11px;
  }

  .phone-stage {
    min-height: 540px;
  }

  .phone-stage::before,
  .phone-stage::after {
    width: 90%;
    height: 470px;
    border-radius: 34px;
  }

  .phone-stage img {
    width: min(72%, 280px);
  }

  .section {
    padding: 68px 0;
  }

  .section-head {
    margin-bottom: 36px;
    text-align: left;
  }

  .section h2 {
    font-size: 38px;
  }

  .step {
    padding: 24px;
  }




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

  .stat {
    padding: 14px 10px;
  }

  .stat strong {
    font-size: 25px;
  }

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

  .subject-card {
    min-height: 0;
  }

  .source-layout {
    gap: 38px;
  }

  .source-card {
    padding: 20px;
  }

  .faq details {
    padding: 19px 20px;
    border-radius: 16px;
  }

  .cta .app-icon {
    width: 76px;
    height: 76px;
    border-radius: 18px;
  }

  .footer-grid {
    gap: 36px;
  }

  .footer-links {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

@media (max-width: 390px) {
  .hero h1 {
    font-size: 42px;
  }

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

  .stat {
    padding: 16px;
  }

  .footer-links {
    grid-template-columns: 1fr;
  }
}

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

/* V1 responsive polish */

@media (min-width: 901px) {
  .hero-grid {
    min-height: 720px;
  }

  .split {
    min-height: 720px;
  }

  .section-head {
    margin-bottom: 46px;
  }

  .faq {
    width: min(100%, 880px);
  }

  #knowledge-test .source-card strong {
    font-size: 21px;
  }
}

@media (max-width: 900px) {
  .hero-grid,
  .split,
  .source-layout {
    gap: 44px;
  }

  .hero-grid {
    min-height: 0;
  }

  .phone-stage {
    min-height: 570px;
  }

}

@media (max-width: 600px) {
  .hero {
    padding-bottom: 58px;
  }

  .hero-grid {
    gap: 22px;
  }

  .hero-copy {
    position: relative;
    z-index: 3;
  }

  .hero h1 {
    margin-top: 18px;
    line-height: .99;
  }

  .lead {
    margin-top: 20px;
  }

  .hero-actions {
    margin-top: 24px;
    gap: 14px;
  }

  .checks {
    margin-top: 22px;
  }

  .phone-stage {
    min-height: 490px;
    margin-top: 4px;
  }

  .phone-stage::before,
  .phone-stage::after {
    height: 430px;
  }

  .phone-stage img {
    width: min(78%, 300px);
  }

  .section-head {
    margin-bottom: 30px;
  }

  .steps {
    gap: 12px;
  }

  .step {
    display: grid;
    grid-template-columns: 36px 1fr;
    column-gap: 14px;
    padding: 20px;
  }

  .step-number {
    grid-row: 1 / span 2;
    margin: 0;
  }

  .step h3 {
    align-self: center;
    font-size: 20px;
  }

  .step p {
    grid-column: 2;
    margin: 6px 0 0;
  }

  .split {
    gap: 30px;
  }



  .copy > p {
    font-size: 17px;
  }

  .bullets {
    margin-top: 22px;
  }


  #knowledge-test .source-cards {
    grid-template-columns: 1fr 1fr 1fr;
    display: grid;
    gap: 8px;
  }

  #knowledge-test .source-card {
    padding: 14px 10px;
    text-align: center;
  }

  #knowledge-test .source-card strong {
    font-size: 19px;
  }

  #knowledge-test .source-card span {
    font-size: 12px;
    line-height: 1.35;
  }

  .faq details {
    margin-bottom: 9px;
  }

  .footer-brand {
    max-width: none;
  }

  .footer-links {
    gap: 28px 36px;
  }

  .footer-links a {
    min-height: 30px;
    display: flex;
    align-items: center;
  }

  .footer-legal {
    line-height: 1.55;
  }
}

@media (max-width: 390px) {
  #knowledge-test .source-cards {
    grid-template-columns: 1fr;
  }

  #knowledge-test .source-card {
    text-align: left;
    padding: 16px;
  }
}

/* Reusable device presentation */

.device {
  position: relative;
  width: min(100%, 326px);
  aspect-ratio: 402 / 874;
  padding: 5px;
  border: 1px solid #34363a;
  border-radius: 15.2% / 7%;
  background: linear-gradient(145deg, #34363a 0%, #0b0c0e 18%, #020304 72%, #26282b 100%);
  box-shadow:
    0 34px 60px rgba(12, 30, 51, .25),
    0 10px 22px rgba(12, 30, 51, .18),
    inset 0 0 0 1px rgba(255, 255, 255, .12);
}

.device::before,
.device::after {
  content: "";
  position: absolute;
  z-index: -1;
  width: 3px;
  border-radius: 3px 0 0 3px;
  background: #17191c;
}

.device::before {
  top: 20%;
  left: -4px;
  height: 11%;
}

.device::after {
  top: 27%;
  right: -4px;
  height: 14%;
  border-radius: 0 3px 3px 0;
}

.device-screen {
  width: 100%;
  height: 100%;
  overflow: hidden;
  border-radius: 14.2% / 6.55%;
  background: #fff;
}

.device-screen img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.phone-stage {
  isolation: isolate;
}

.phone-stage::before {
  width: min(92%, 470px);
  height: 650px;
  background: linear-gradient(145deg, #e6edf6, #cbd9e9);
  transform: rotate(-5deg);
}

.phone-stage::after {
  width: min(92%, 470px);
  height: 650px;
  background: linear-gradient(145deg, #164b7d, var(--brand));
  transform: rotate(1.5deg);
}

.phone-stage .device {
  z-index: 2;
}

.phone-stage .device img {
  filter: none;
}

.device-hero {
  width: min(84%, 376px);
}

.device-composition {
  position: relative;
  min-height: 790px;
  overflow: hidden;
  isolation: isolate;
  border-radius: 44px;
  background:
    radial-gradient(circle at 72% 20%, rgba(255, 255, 255, .92), transparent 28%),
    linear-gradient(145deg, #edf2f8 0%, var(--blue-soft) 52%, #d5e0ec 100%);
}

.device-composition::before {
  content: "";
  position: absolute;
  inset: 9% 8%;
  z-index: -1;
  border: 1px solid rgba(18, 58, 99, .08);
  border-radius: 50%;
  transform: rotate(-12deg);
}

.device-pair .device {
  position: absolute;
  width: min(58%, 292px);
}

.device-pair .device-primary {
  z-index: 2;
  left: 8%;
  top: 6%;
  transform: rotate(-2.5deg);
}

.device-pair .device-secondary {
  z-index: 1;
  right: 7%;
  top: 13%;
  transform: rotate(4deg);
  box-shadow:
    0 28px 48px rgba(12, 30, 51, .2),
    0 8px 18px rgba(12, 30, 51, .14),
    inset 0 0 0 1px rgba(255, 255, 255, .12);
}

.pair-library .device-primary,
.pair-progress .device-primary {
  left: auto;
  right: 7%;
  transform: rotate(2.5deg);
}

.pair-library .device-secondary,
.pair-progress .device-secondary {
  left: 7%;
  right: auto;
  transform: rotate(-4deg);
}

@media (max-width: 900px) {
  .device-composition {
    width: min(100%, 650px);
    min-height: 790px;
    margin-inline: auto;
  }
}

@media (max-width: 600px) {
  .phone-stage::before,
  .phone-stage::after {
    width: 90%;
    height: 430px;
  }

  .device-hero {
    width: min(80%, 300px);
  }

  .device-composition {
    min-height: clamp(530px, 160vw, 730px);
    border-radius: 30px;
  }

  .device-pair .device {
    width: min(61%, 270px);
  }

  .device-pair .device-primary {
    left: 5%;
    top: 5%;
  }

  .device-pair .device-secondary {
    right: 5%;
    top: 15%;
  }

  .pair-library .device-primary,
  .pair-progress .device-primary {
    left: auto;
    right: 5%;
  }

  .pair-library .device-secondary,
  .pair-progress .device-secondary {
    left: 5%;
    right: auto;
  }
}

@media (max-width: 390px) {
  .phone-stage {
    min-height: 455px;
  }

  .phone-stage::before,
  .phone-stage::after {
    height: 400px;
  }

  .device-hero {
    width: min(80%, 274px);
  }

  .device-composition {
    min-height: clamp(530px, 160vw, 730px);
  }

  .device-pair .device {
    width: 62%;
  }
}

@media (min-width: 901px) {
  .hero {
    padding-top: 64px;
    padding-bottom: 84px;
  }

  .hero-grid {
    min-height: 680px;
  }

  .phone-stage {
    min-height: 680px;
  }

  .phone-stage::before,
  .phone-stage::after {
    width: min(88%, 440px);
    height: 610px;
  }
}

@media (max-width: 600px) {
  .step {
    display: flex;
    padding: 22px;
  }

  .step-number {
    margin-bottom: 14px;
  }

  .step h3 {
    font-size: 22px;
  }

  .step p {
    margin: 8px 0 18px;
  }

  .step-preview {
    width: 100%;
    min-height: 164px;
  }
}

@media (max-width: 340px) {
  .container {
    width: min(calc(100% - 24px), var(--max));
  }

  .hero h1 {
    font-size: 39px;
  }

  .device-composition {
    min-height: 530px;
  }
}

/* Homepage desktop design-system migration v1 */

@media (min-width: 901px) {
  :root {
    --web-card-radius: 14px;
    --web-hero-radius: 18px;
    --web-border: #d1d1d6;
    --web-subtle-fill: #f7f7f7;
    --web-card-shadow: 0 1px 2px rgba(0, 0, 0, .04);
  }

  .site-header {
    border-bottom-width: .5px;
    border-bottom-color: var(--web-border);
  }

  .header-inner {
    min-height: 76px;
  }

  .nav {
    gap: 28px;
  }

  .pill {
    padding: 7px 12px;
    background: #e3eaf3;
    font-size: 13px;
  }

  .hero {
    padding-top: 56px;
    padding-bottom: 72px;
  }

  .hero-grid {
    min-height: 640px;
    gap: clamp(56px, 7vw, 96px);
  }

  .hero h1 {
    font-size: clamp(54px, 5.35vw, 72px);
  }

  .lead {
    margin-top: 22px;
  }

  .hero-actions {
    margin-top: 26px;
  }

  .store-button {
    min-height: 52px;
    border-radius: var(--web-card-radius);
  }

  .checks {
    margin-top: 24px;
  }

  .phone-stage {
    min-height: 640px;
  }

  .phone-stage::before,
  .phone-stage::after {
    width: min(86%, 430px);
    height: 590px;
    border-radius: 32px;
  }

  .phone-stage::before {
    background: #e9e9ee;
  }

  .phone-stage::after {
    background: var(--brand);
  }

  .device-hero {
    width: min(82%, 360px);
  }

  .section {
    padding-top: 88px;
    padding-bottom: 88px;
  }

  .section-head {
    margin-bottom: 40px;
  }

  .section-head.left {
    margin-bottom: 30px;
  }

  .section h2 {
    font-size: clamp(38px, 4vw, 50px);
  }

  .steps {
    gap: 16px;
  }

  .step {
    padding: 20px;
    border: .5px solid rgba(209, 209, 214, .8);
    border-radius: var(--web-card-radius);
    box-shadow: var(--web-card-shadow);
  }

  .step-number {
    width: 32px;
    height: 32px;
    margin-bottom: 16px;
  }

  .step h3,
  .copy h3 {
    font-size: 23px;
  }

  .step p {
    margin: 8px 0 18px;
  }

  .step-preview {
    min-height: 168px;
    padding: 16px;
    border: .5px solid rgba(209, 209, 214, .8);
    border-radius: var(--web-card-radius);
    background: #f7f7f7;
  }

  .answer-preview > span {
    border: .5px solid rgba(209, 209, 214, .8);
    border-radius: 12px;
  }

  .answer-preview .is-correct {
    border-width: 1.5px;
  }

  .split {
    min-height: 680px;
    gap: clamp(56px, 7vw, 96px);
  }

  .copy > p {
    margin-top: 18px;
  }

  .bullets {
    gap: 12px;
    margin-top: 24px;
  }

  .bullets li {
    padding-left: 34px;
  }

  .stats {
    gap: 12px;
    margin-top: 24px;
  }

  .stat {
    padding: 16px;
    border: .5px solid rgba(209, 209, 214, .8);
    border-radius: var(--web-card-radius);
    box-shadow: var(--web-card-shadow);
  }

  .subject-grid {
    gap: 14px;
  }

  .subject-card {
    min-height: 140px;
    padding: 20px;
    border: .5px solid rgba(209, 209, 214, .72);
    border-radius: var(--web-card-radius);
    box-shadow: var(--web-card-shadow);
  }

  .source-layout {
    gap: 64px;
  }

  .source-tags {
    gap: 8px;
    margin-top: 24px;
  }

  .source-tags span {
    padding: 7px 12px;
    font-size: 13px;
  }

  .source-cards {
    gap: 12px;
  }

  .source-card {
    padding: 18px 20px;
    border: .5px solid rgba(209, 209, 214, .72);
    border-radius: var(--web-card-radius);
    background: #fff;
    box-shadow: var(--web-card-shadow);
  }

  #sources .source-card {
    background: #f7f7f7;
    box-shadow: none;
  }

  .faq {
    width: min(100%, 840px);
  }

  .faq details {
    margin-bottom: 10px;
    padding: 20px;
    border: .5px solid rgba(209, 209, 214, .8);
    border-radius: var(--web-card-radius);
    box-shadow: var(--web-card-shadow);
  }

  .faq summary {
    font-size: 17px;
  }

  .cta .app-icon {
    border-radius: var(--web-hero-radius);
  }

  .device-composition {
    min-height: 740px;
    border-radius: 24px;
    background: #e9eef4;
  }

  .device-composition::before {
    border-color: rgba(18, 58, 99, .06);
  }

  .device-pair .device-secondary {
    box-shadow:
      0 20px 36px rgba(12, 30, 51, .16),
      0 6px 14px rgba(12, 30, 51, .10),
      inset 0 0 0 1px rgba(255, 255, 255, .12);
  }

  .site-footer {
    padding-top: 52px;
  }
}