* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
:root {
  --bg: #f5f7f4;
  --card: #fff;
  --ink: #18251e;
  --muted: #617066;
  --brand: #256b4c;
  --brand2: #73a85a;
  --soft: #e9f2e7;
  --line: #dbe3d9;
  --max: 1180px;
  --radius: 22px;
  --shadow: #1d372008;
}
body {
  margin: 0;
  font-family: Inter, 'Helvetica Neue', Arial, system-ui, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.65;
}
a {
  text-decoration: none;
  color: inherit;
}
.container {
  width: min(var(--max), calc(100% - 34px));
  margin: auto;
}
header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: #f5f7f4ee;
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav {
  height: 74px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 25px;
}
.logo {
  font-size: 25px;
  font-weight: 900;
  letter-spacing: -1px;
}
.logo b {
  color: var(--brand);
}
.logo-mark {
  display: inline-grid;
  place-items: center;
  width: 37px;
  height: 37px;
  border-radius: 12px;
  background: var(--brand);
  color: #fff;
  margin-right: 8px;
  font-size: 18px;
}
nav {
  display: flex;
  gap: 18px;
  font-size: 14px;
  font-weight: 700;
  color: #415047;
}
nav a:hover {
  color: var(--brand);
}
.hero {
  padding: 82px 0 68px;
  background:
    radial-gradient(circle at 75% 25%, #dcebd7, transparent 30%),
    linear-gradient(135deg, #f7f8f5, #e7f1e4);
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 55px;
  align-items: center;
}
.eyebrow {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 1.6px;
  color: var(--brand);
  font-weight: 900;
}
h1 {
  font-size: clamp(46px, 6vw, 78px);
  line-height: 1.02;
  letter-spacing: -3px;
  margin: 12px 0 20px;
}
h2 {
  font-size: clamp(30px, 4vw, 44px);
  line-height: 1.12;
  letter-spacing: -1px;
  margin-top: 0;
}
h3 {
  line-height: 1.25;
}
.lead {
  font-size: 18px;
  color: var(--muted);
  max-width: 680px;
}
.muted {
  color: var(--muted);
}
.btn {
  display: inline-block;
  padding: 13px 20px;
  border-radius: var(--radius);
  font-weight: 800;
  margin: 12px 8px 0 0;
  transition: transform 0.2s ease;
}
.primary {
  background: var(--brand);
  color: #fff;
}
.secondary {
  background: #fff;
  border: 1px solid var(--line);
}
.hero-visual,
.card,
.feature {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
}
.hero-icons {
  font-size: 65px;
  text-align: center;
  padding: 18px 0;
}
.mini-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
.mini {
  background: var(--soft);
  padding: 10px;
  border-radius: 12px;
  text-align: center;
  font-size: 13px;
  font-weight: bold;
}
.section {
  padding: 70px 0;
}
.alt {
  background: #fff;
}
.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.grid2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}
.card {
  transition: 0.2s;
}
.card:hover {
  transform: translateY(-4px);
  border-color: #aac4ae;
}
.icon {
  font-size: 28px;
  width: 50px;
  height: 50px;
  display: grid;
  place-items: center;
  background: var(--soft);
  border-radius: 14px;
}
.tag {
  display: inline-block;
  margin-top: 12px;
  padding: 3px 9px;
  border-radius: 999px;
  background: var(--soft);
  color: var(--brand);
  font-size: 12px;
  font-weight: 800;
}
.ad {
  min-height: 92px;
  border: 1px dashed #becabe;
  border-radius: 13px;
  display: grid;
  place-items: center;
  color: #849085;
  font-size: 12px;
  margin: 28px 0;
}
.article {
  max-width: 850px;
  margin: auto;
}
.crumb {
  font-size: 14px;
  color: var(--muted);
  margin-bottom: 15px;
}
.notice {
  padding: 17px;
  border-left: 4px solid var(--brand);
  background: var(--soft);
  border-radius: 10px;
}
.list li {
  margin: 8px 0;
}
.tool h2 {
  margin-top: 0;
}
.tool label {
  display: block;
  font-weight: 800;
  margin-top: 10px;
}
.tool input {
  width: 100%;
  padding: 12px;
  border: 1px solid #d3ddd2;
  border-radius: 10px;
  font-size: 16px;
}
.result {
  display: none;
  margin-top: 14px;
  padding: 14px;
  border-radius: 10px;
  background: var(--soft);
}
.show {
  display: block;
}
footer {
  background: #17281f;
  color: #dce6df;
  padding: 50px 0 22px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 30px;
}
.footer-grid p {
  margin: 7px 0;
}
.footnote {
  margin-top: 25px;
  padding-top: 20px;
  border-top: 1px solid #ffffff18;
  color: #9eafa5;
  font-size: 13px;
}
@media (max-width: 850px) {
  nav {
    display: none;
  }
  .hero-grid,
  .grid2 {
    grid-template-columns: 1fr;
  }
  .grid {
    grid-template-columns: 1fr 1fr;
  }
  .hero {
    padding-top: 60px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
}
@media (max-width: 520px) {
  .grid {
    grid-template-columns: 1fr;
  }
  .container {
    width: min(var(--max), calc(100% - 24px));
  }
  h1 {
    letter-spacing: -2px;
  }
}