:root {
  --bg: #f7fbef;
  --ink: #171b1f;
  --muted: #607070;
  --line: rgba(23, 27, 31, 0.1);
  --lime: #b9ff45;
  --mint: #54dec5;
  --card: rgba(255, 255, 255, 0.78);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Inter, Arial, sans-serif;
  color: var(--ink);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  background:
    radial-gradient(circle at 18% 12%, rgba(185, 255, 69, 0.28), transparent 28rem),
    radial-gradient(circle at 85% 15%, rgba(84, 222, 197, 0.2), transparent 25rem),
    linear-gradient(90deg, rgba(23, 27, 31, 0.045) 1px, transparent 1px),
    linear-gradient(180deg, rgba(23, 27, 31, 0.045) 1px, transparent 1px),
    var(--bg);
  background-size: auto, auto, 72px 72px, 72px 72px, auto;
}

.shell {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}

.header {
  position: sticky;
  top: 16px;
  z-index: 5;
  margin: 16px auto 32px;
  padding: 12px 16px;
  border: 1px solid var(--line);
  border-radius: 32px;
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: blur(18px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--ink);
  font-weight: 850;
}

.brand img {
  width: 42px;
  height: 42px;
  border-radius: 12px;
}

.nav {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.nav a,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 800;
}

.nav a {
  color: #4d5757;
}

.button {
  color: #101417;
  background: linear-gradient(135deg, var(--lime), var(--mint));
  box-shadow: 0 18px 44px rgba(84, 222, 197, 0.24);
}

.button.secondary {
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: none;
}

.hero {
  padding: 72px 0 42px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-transform: uppercase;
  font-size: 14px;
  font-weight: 850;
  color: #5b6767;
}

.eyebrow:before {
  content: "";
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--lime);
  box-shadow: 0 0 0 6px rgba(185, 255, 69, 0.26);
}

h1 {
  max-width: 920px;
  margin: 18px 0;
  font-size: clamp(38px, 6vw, 78px);
  line-height: 0.98;
  letter-spacing: 0;
  text-wrap: balance;
}

p.lead {
  max-width: 780px;
  font-size: clamp(18px, 2.2vw, 24px);
  color: var(--muted);
  text-wrap: balance;
}

.grid {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
  gap: 20px;
  margin: 36px 0;
}

.card {
  border: 1px solid var(--line);
  border-radius: 28px;
  background: var(--card);
  backdrop-filter: blur(16px);
  padding: 28px;
  box-shadow: 0 24px 70px rgba(23, 27, 31, 0.08);
}

.card h2 {
  margin: 0 0 12px;
  font-size: clamp(26px, 4vw, 42px);
  line-height: 1.05;
}

.list {
  display: grid;
  gap: 10px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.list li {
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.7);
  font-weight: 750;
}

.cta {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 24px;
}

.related {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin: 28px 0 48px;
}

.related a {
  padding: 18px;
  border-radius: 20px;
  background: #fff;
  border: 1px solid var(--line);
  color: var(--ink);
  text-decoration: none;
  font-weight: 800;
}

.faq {
  margin: 0 0 72px;
}

.faq h2 {
  margin: 0 0 16px;
  font-size: clamp(26px, 4vw, 42px);
  line-height: 1.05;
}

.faq-list {
  display: grid;
  gap: 12px;
}

.faq-item {
  border: 1px solid var(--line);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.78);
  backdrop-filter: blur(14px);
  overflow: hidden;
}

.faq-item summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 18px 20px;
  cursor: pointer;
  list-style: none;
  font-weight: 850;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "+";
  font-size: 24px;
  line-height: 1;
  color: var(--muted);
}

.faq-item[open] summary::after {
  content: "-";
}

.faq-item p {
  margin: 0;
  padding: 0 20px 18px;
  color: var(--muted);
}

.footer {
  padding: 34px 0 48px;
  color: #697676;
}

.footer a {
  color: var(--ink);
}

@media (min-width: 1440px) {
  .shell {
    width: min(1240px, calc(100% - 80px));
  }

  .hero {
    padding-top: 80px;
  }
}

@media (max-width: 960px) {
  .shell {
    width: min(100% - 28px, 1120px);
  }

  .header {
    position: static;
    border-radius: 24px;
    align-items: flex-start;
    flex-wrap: wrap;
    margin-bottom: 24px;
  }

  .nav {
    width: 100%;
    justify-content: center;
  }

  .hero {
    padding: 44px 0 34px;
  }

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

  .related {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .card {
    padding: 24px;
  }
}

@media (max-width: 640px) {
  .shell {
    width: calc(100% - 24px);
  }

  .header {
    padding: 12px 14px;
  }

  .nav {
    justify-content: flex-start;
    gap: 8px;
  }

  .nav a {
    min-height: 40px;
    padding: 0 10px;
  }

  .button {
    width: 100%;
    min-height: 52px;
  }

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

  .grid,
  .related {
    grid-template-columns: 1fr;
  }

  .card {
    padding: 22px;
  }

  .hero {
    padding-top: 32px;
  }

  .brand span {
    font-size: 14px;
  }

  h1 {
    font-size: clamp(32px, 7.8vw, 46px);
  }

  p.lead {
    font-size: 17px;
  }
}

@media (max-width: 480px) {
  .shell {
    width: calc(100% - 20px);
  }

  .hero {
    padding-top: 28px;
  }

  h1 {
    font-size: clamp(28px, 8.6vw, 40px);
  }

  .card {
    padding: 20px;
  }

  .card h2 {
    font-size: clamp(22px, 7vw, 34px);
  }

  .related a {
    padding: 16px;
  }

  .faq-item summary {
    padding: 16px 18px;
  }

  .faq-item p {
    padding: 0 18px 16px;
  }
}

@media (max-width: 360px) {
  .header {
    padding: 10px 12px;
    border-radius: 20px;
  }

  .brand {
    gap: 8px;
  }

  .brand img {
    width: 38px;
    height: 38px;
  }

  .brand span {
    font-size: 13px;
  }

  h1 {
    font-size: clamp(26px, 9vw, 34px);
  }

  .card {
    padding: 18px;
  }

  .faq-item summary {
    padding: 15px 16px;
  }

  .faq-item p {
    padding: 0 16px 15px;
  }
}