:root {
  --blue: #145da0;
  --blue-dark: #0b3155;
  --teal: #0f766e;
  --ink: #101820;
  --text: #344250;
  --muted: #667785;
  --line: #d8e2ea;
  --soft: #f3f7fa;
  --white: #fff;
  --sans: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --serif: 'DM Serif Display', Georgia, serif;
}

* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  color: var(--text);
  background: var(--white);
  font-family: var(--sans);
  line-height: 1.65;
}
a {
  color: inherit;
}
.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 14px 28px;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(12px);
}
.brand img {
  display: block;
  width: 220px;
  max-height: 50px;
  object-fit: contain;
}
.nav {
  display: flex;
  align-items: center;
  gap: 18px;
  color: var(--muted);
  font-size: 0.88rem;
  font-weight: 800;
}
.nav a {
  text-decoration: none;
}
.nav .book {
  padding: 10px 16px;
  border-radius: 999px;
  color: var(--white);
  background: var(--blue);
}
.hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background: var(--soft);
}
.hero::after {
  position: absolute;
  right: -100px;
  bottom: -170px;
  width: 430px;
  height: 430px;
  border: 70px solid rgba(20, 93, 160, 0.09);
  border-radius: 50%;
  content: '';
}
.wrap {
  width: min(1080px, calc(100% - 44px));
  margin: 0 auto;
  padding: 68px 0;
}
.hero .wrap {
  position: relative;
  z-index: 1;
  padding-top: 78px;
  padding-bottom: 78px;
}
.eyebrow {
  margin-bottom: 15px;
  color: var(--blue);
  font-size: 0.74rem;
  font-weight: 900;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}
h1,
h2 {
  margin: 0;
  color: var(--ink);
  font-family: var(--serif);
  font-weight: 400;
  line-height: 1.02;
}
h1 {
  max-width: 850px;
  font-size: clamp(3rem, 7vw, 5.8rem);
}
h2 {
  margin-bottom: 18px;
  font-size: clamp(2.1rem, 4.5vw, 3.5rem);
}
h3 {
  margin: 0 0 8px;
  color: var(--ink);
  font-size: 1.04rem;
}
.lead {
  max-width: 760px;
  margin: 24px 0 0;
  color: var(--muted);
  font-size: clamp(1.05rem, 2vw, 1.25rem);
}
.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}
.btn {
  display: inline-flex;
  min-height: 50px;
  align-items: center;
  justify-content: center;
  padding: 12px 21px;
  border: 1px solid var(--blue);
  border-radius: 999px;
  color: var(--blue);
  background: var(--white);
  font-weight: 900;
  text-decoration: none;
}
.btn.primary {
  color: var(--white);
  background: var(--blue);
}
.proof {
  border-bottom: 1px solid var(--line);
  background: var(--white);
}
.proof .wrap {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  padding: 0;
  background: var(--line);
}
.proof div {
  padding: 20px 24px;
  background: var(--white);
}
.proof strong {
  display: block;
  color: var(--ink);
}
.proof span {
  color: var(--muted);
  font-size: 0.86rem;
}
.split {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 34px;
  align-items: start;
}
.answer {
  padding: 26px;
  border: 1px solid #c9dded;
  border-radius: 12px;
  background: #edf6fc;
}
.answer strong {
  display: block;
  margin-bottom: 8px;
  color: var(--blue-dark);
  font-size: 1.08rem;
}
.answer p {
  margin: 0;
}
.plain-list {
  display: grid;
  gap: 12px;
  margin-top: 24px;
}
.plain-list div {
  padding: 17px 18px;
  border-left: 3px solid var(--blue);
  background: var(--soft);
}
.plain-list b {
  display: block;
  color: var(--ink);
}
.plain-list span {
  color: var(--muted);
}
.soft {
  border-block: 1px solid var(--line);
  background: var(--soft);
}
.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 26px;
}
.card {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--white);
}
.step {
  display: inline-flex;
  width: 32px;
  height: 32px;
  align-items: center;
  justify-content: center;
  margin-bottom: 13px;
  border-radius: 50%;
  color: var(--white);
  background: var(--teal);
  font-weight: 900;
}
.card p {
  margin: 0;
  color: var(--muted);
}
.questions details {
  margin-bottom: 12px;
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--white);
}
.questions summary {
  color: var(--ink);
  font-weight: 900;
  cursor: pointer;
}
.questions p {
  margin-bottom: 0;
  color: var(--muted);
}
.cta {
  color: var(--white);
  background: var(--ink);
}
.cta h2 {
  color: var(--white);
}
.cta p {
  max-width: 700px;
  color: rgba(255, 255, 255, 0.72);
}
.cta .btn:not(.primary) {
  border-color: rgba(255, 255, 255, 0.5);
  color: var(--white);
  background: transparent;
}
footer {
  padding: 26px 22px;
  color: var(--muted);
  background: var(--white);
  text-align: center;
  font-size: 0.84rem;
}
.mobile-actions {
  display: none;
}

@media (max-width: 780px) {
  body {
    padding-bottom: 78px;
  }
  .topbar {
    padding: 13px 17px;
  }
  .brand img {
    width: 178px;
  }
  .nav a:not(.book) {
    display: none;
  }
  .wrap {
    width: min(100% - 36px, 1080px);
    padding: 48px 0;
  }
  .hero .wrap {
    padding-top: 58px;
    padding-bottom: 58px;
  }
  .hero::after {
    right: -210px;
  }
  .proof .wrap,
  .split,
  .cards {
    grid-template-columns: 1fr;
  }
  .proof div {
    padding: 16px 18px;
  }
  .mobile-actions {
    position: fixed;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 30;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 9px;
    padding: 10px 14px;
    border-top: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.97);
    box-shadow: 0 -8px 24px rgba(16, 24, 32, 0.1);
  }
  .mobile-actions a {
    display: flex;
    min-height: 48px;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--blue);
    border-radius: 999px;
    color: var(--blue);
    background: var(--white);
    font-weight: 900;
    text-decoration: none;
  }
  .mobile-actions a:first-child {
    color: var(--white);
    background: var(--blue);
  }
}