:root {
  --paper: #fffdf8;
  --cream: #f5f3ec;
  --ink: #1d2822;
  --muted: #68766e;
  --green: #1d4b3d;
  --green-soft: #dfeae4;
  --line: rgba(29, 75, 61, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 88% 4%, rgba(200, 222, 210, 0.7), transparent 28rem),
    var(--cream);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC",
    "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

.wrap {
  width: min(1040px, calc(100% - 40px));
  margin: 0 auto;
}

header {
  border-bottom: 1px solid var(--line);
  background: rgba(245, 243, 236, 0.82);
  backdrop-filter: blur(18px);
}

.nav,
.brand,
nav,
.actions,
.footer-row {
  display: flex;
  align-items: center;
}

.nav {
  min-height: 80px;
  justify-content: space-between;
}

.brand {
  gap: 12px;
}

.mark {
  display: grid;
  width: 44px;
  height: 44px;
  place-items: center;
  color: white;
  background: var(--green);
  border-radius: 14px;
  box-shadow: 0 10px 28px rgba(29, 75, 61, 0.18);
  font: 600 23px/1 "STKaiti", "KaiTi", serif;
  transform: rotate(-2deg);
}

.brand b,
.brand small {
  display: block;
}

.brand b {
  font-size: 16px;
}

.brand small {
  margin-top: 3px;
  color: var(--muted);
  font-size: 10px;
  letter-spacing: 0.1em;
}

nav {
  gap: 6px;
}

nav a {
  padding: 9px 13px;
  border-radius: 999px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 650;
}

nav a:hover {
  color: var(--green);
  background: rgba(255, 255, 255, 0.7);
}

.hero {
  padding: 96px 0 86px;
}

.eyebrow {
  color: var(--green);
  font-size: 11px;
  font-weight: 750;
  letter-spacing: 0.18em;
}

h1 {
  max-width: 760px;
  margin: 20px 0 24px;
  font-size: clamp(48px, 8vw, 82px);
  line-height: 1.06;
  letter-spacing: -0.065em;
}

.lede {
  max-width: 660px;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.9;
}

.actions {
  gap: 12px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  padding: 0 22px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 14px;
  font-weight: 700;
}

.button.primary {
  color: white;
  border-color: var(--green);
  background: var(--green);
  box-shadow: 0 12px 28px rgba(29, 75, 61, 0.18);
}

.micro {
  margin-top: 18px;
  color: var(--muted);
  font-size: 12px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  padding: 0 0 88px;
}

.card,
.contact-card,
.content section {
  border: 1px solid var(--line);
  background: rgba(255, 253, 248, 0.82);
  box-shadow: 0 20px 50px rgba(32, 59, 48, 0.06);
}

.card {
  min-height: 220px;
  padding: 28px;
  border-radius: 24px;
}

.number {
  color: var(--green);
  font-size: 12px;
  font-weight: 800;
}

.card h2 {
  margin: 44px 0 12px;
  font-size: 20px;
}

.card p,
.content p,
.content li,
.contact-card p {
  color: var(--muted);
  line-height: 1.85;
}

.page-intro {
  padding: 78px 0 44px;
}

.page-intro h1 {
  margin-bottom: 18px;
  font-size: clamp(48px, 7vw, 72px);
}

.page-intro .lede {
  font-size: 16px;
}

.content {
  display: grid;
  gap: 14px;
  padding-bottom: 72px;
}

.content section {
  padding: 28px 30px;
  border-radius: 22px;
}

.content h2 {
  margin: 0 0 12px;
  font-size: 20px;
}

.content p {
  margin: 9px 0;
}

.content ul {
  margin: 8px 0 0;
  padding-left: 22px;
}

details {
  border-top: 1px solid var(--line);
}

details:first-child {
  border-top: 0;
}

summary {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 22px 0;
  cursor: pointer;
  list-style: none;
  font-weight: 700;
}

summary span {
  color: var(--green);
  font-size: 12px;
}

details p {
  margin: -4px 0 22px 35px;
}

.contact-card {
  margin-bottom: 72px;
  padding: 30px;
  border-radius: 24px;
}

.contact-card a {
  color: var(--green);
  font-weight: 750;
}

footer {
  color: #dfe9e4;
  background: #173a30;
}

.footer-row {
  min-height: 120px;
  justify-content: space-between;
  gap: 24px;
}

.footer-row p {
  color: #aabdb4;
  font-size: 13px;
}

.footer-links {
  display: flex;
  gap: 20px;
  font-size: 13px;
}

@media (max-width: 720px) {
  .wrap {
    width: min(100% - 28px, 1040px);
  }

  .nav {
    min-height: 72px;
  }

  .brand small {
    display: none;
  }

  nav a {
    padding: 8px 9px;
    font-size: 13px;
  }

  .hero {
    padding: 70px 0 62px;
  }

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

  .card {
    min-height: 178px;
  }

  .card h2 {
    margin-top: 28px;
  }

  .footer-row {
    align-items: flex-start;
    flex-direction: column;
    padding: 34px 0;
  }
}