:root {
  color: #18211d;
  background: #f4f2e9;
  font-family:
    Inter, "PingFang SC", "Microsoft YaHei", system-ui, -apple-system,
    sans-serif;
  font-synthesis: none;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
}

a {
  color: inherit;
}

.nav,
.hero,
.features,
footer {
  width: min(1180px, calc(100% - 48px));
  margin-inline: auto;
}

.nav {
  min-height: 84px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 19px;
  font-weight: 700;
  text-decoration: none;
}

.brand-mark {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: 13px;
  color: #fff;
  background: #1c6b4c;
}

.nav-tag {
  padding: 8px 14px;
  border: 1px solid rgb(28 107 76 / 20%);
  border-radius: 999px;
  color: #1c6b4c;
  font-size: 13px;
}

.hero {
  min-height: 660px;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  align-items: center;
  gap: 80px;
  padding: 70px 0 96px;
}

.eyebrow {
  margin: 0 0 22px;
  color: #b25c35;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.16em;
}

h1 {
  margin: 0;
  font-size: clamp(48px, 6.2vw, 82px);
  line-height: 1.08;
  letter-spacing: -0.055em;
}

.lead {
  max-width: 570px;
  margin: 30px 0 0;
  color: #526059;
  font-size: 18px;
  line-height: 1.9;
}

.actions {
  display: flex;
  align-items: center;
  gap: 26px;
  margin-top: 38px;
}

.primary-action {
  padding: 14px 22px;
  border-radius: 12px;
  color: #fff;
  background: #1c6b4c;
  box-shadow: 0 12px 28px rgb(28 107 76 / 20%);
}

.actions a {
  color: #526059;
  text-underline-offset: 5px;
}

.practice-card {
  position: relative;
  padding: 32px;
  border: 1px solid rgb(24 33 29 / 9%);
  border-radius: 28px;
  background: rgb(255 255 255 / 76%);
  box-shadow: 0 28px 80px rgb(43 51 46 / 13%);
}

.practice-card::before {
  content: "";
  position: absolute;
  z-index: -1;
  inset: -38px 54px 38px -38px;
  border-radius: 28px;
  background: #dce8d8;
}

.card-head {
  display: flex;
  justify-content: space-between;
  color: #738078;
  font-size: 13px;
}

.question {
  margin: 36px 0 28px;
  font-size: 21px;
  font-weight: 650;
  line-height: 1.6;
}

.option {
  margin-top: 12px;
  padding: 15px 17px;
  border: 1px solid #dfe3df;
  border-radius: 12px;
  color: #536059;
  background: #fff;
}

.option.selected {
  border-color: #1c6b4c;
  color: #185a41;
  background: #eaf4ee;
}

.feedback {
  margin-top: 22px;
  padding: 14px 16px;
  border-radius: 12px;
  color: #1c6b4c;
  background: #dceee3;
  font-size: 14px;
}

.features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid rgb(24 33 29 / 13%);
  padding: 56px 0 80px;
}

.features article {
  padding-right: 60px;
}

.features article + article {
  padding-left: 48px;
  border-left: 1px solid rgb(24 33 29 / 13%);
}

.features span {
  color: #b25c35;
  font-size: 12px;
  font-weight: 700;
}

.features h2 {
  margin: 18px 0 12px;
  font-size: 22px;
}

.features p {
  margin: 0;
  color: #647169;
  line-height: 1.8;
}

footer {
  display: flex;
  justify-content: space-between;
  padding: 30px 0 42px;
  border-top: 1px solid rgb(24 33 29 / 13%);
  color: #7a847e;
  font-size: 13px;
}

@media (max-width: 800px) {
  .nav,
  .hero,
  .features,
  footer {
    width: min(100% - 32px, 620px);
  }

  .hero {
    grid-template-columns: 1fr;
    gap: 64px;
    padding-top: 44px;
  }

  .features {
    grid-template-columns: 1fr;
    gap: 34px;
  }

  .features article,
  .features article + article {
    padding: 0;
    border-left: 0;
  }

  footer {
    gap: 12px;
    flex-direction: column;
  }
}