:root {
  color-scheme: light;
  --ink: #17211d;
  --muted: #5a6861;
  --line: #dbe4dd;
  --paper: #f6f7f2;
  --white: #ffffff;
  --green: #194d37;
  --green-soft: #dfece3;
  --gold: #b9884a;
  --charcoal: #25302c;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;
  background: var(--paper);
  color: var(--ink);
  letter-spacing: 0;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

.site-header {
  min-height: 72px;
  padding: 16px clamp(18px, 5vw, 64px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  border-bottom: 1px solid rgba(23, 33, 29, 0.12);
  background: rgba(246, 247, 242, 0.9);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 10;
}
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; }
.brand-mark {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--green);
  color: var(--white);
  font-size: 13px;
}
nav { display: flex; align-items: center; gap: clamp(14px, 3vw, 28px); color: var(--muted); font-size: 14px; }
nav a:hover { color: var(--green); }

.hero {
  min-height: calc(100vh - 72px);
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(360px, 1.08fr);
  gap: clamp(28px, 5vw, 64px);
  align-items: center;
  padding: clamp(42px, 7vw, 86px) clamp(18px, 5vw, 64px) clamp(28px, 5vw, 56px);
}
.hero-copy { max-width: 720px; }
.eyebrow {
  margin: 0 0 14px;
  color: var(--gold);
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
}
h1, h2, h3, p { margin-top: 0; }
h1 {
  margin-bottom: 20px;
  font-size: clamp(42px, 7vw, 86px);
  line-height: 1.02;
  font-weight: 900;
}
h2 { margin-bottom: 14px; font-size: clamp(28px, 4vw, 48px); line-height: 1.12; }
h3 { margin-bottom: 10px; font-size: 21px; }
.lead { margin-bottom: 30px; color: var(--muted); font-size: clamp(17px, 2vw, 21px); line-height: 1.75; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.button {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 22px;
  border-radius: 6px;
  font-weight: 800;
  border: 1px solid transparent;
}
.button.primary { background: var(--green); color: var(--white); }
.button.secondary { color: var(--green); border-color: rgba(25, 77, 55, 0.28); background: rgba(255,255,255,0.55); }
.hero-media { margin: 0; align-self: stretch; min-height: 420px; border-radius: 8px; overflow: hidden; box-shadow: 0 28px 80px rgba(23, 33, 29, 0.18); }
.hero-media img { width: 100%; height: 100%; object-fit: cover; }

.section { padding: clamp(56px, 8vw, 96px) clamp(18px, 5vw, 64px); }
.section-heading { max-width: 760px; margin-bottom: 28px; }
.grid.three { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
article {
  min-height: 230px;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
}
.number { display: block; margin-bottom: 42px; color: var(--gold); font-weight: 900; }
article p, .guide p, .contact p { color: var(--muted); line-height: 1.75; }

.guide {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(320px, 1.08fr);
  gap: clamp(28px, 5vw, 56px);
  background: var(--charcoal);
  color: var(--white);
}
.guide p { color: rgba(255,255,255,0.72); }
.checklist { display: grid; gap: 12px; }
.checklist div {
  padding: 18px;
  border-radius: 8px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.12);
  display: grid;
  grid-template-columns: 92px 1fr;
  gap: 16px;
}
.checklist span { color: rgba(255,255,255,0.72); line-height: 1.65; }

.proof {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  padding: 1px;
}
.proof div { padding: clamp(26px, 5vw, 46px); background: var(--green-soft); }
.stat { margin-bottom: 8px; font-size: clamp(25px, 4vw, 42px); font-weight: 900; color: var(--green); }
.proof span { color: var(--muted); }

.contact {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  background: var(--white);
}
.contact div { max-width: 780px; }
footer {
  padding: 26px clamp(18px, 5vw, 64px);
  display: flex;
  justify-content: space-between;
  gap: 18px;
  color: var(--muted);
  border-top: 1px solid var(--line);
}

@media (max-width: 900px) {
  .site-header { position: static; align-items: flex-start; flex-direction: column; }
  .hero, .guide { grid-template-columns: 1fr; }
  .hero { min-height: auto; }
  .hero-media { min-height: 300px; }
  .grid.three, .proof { grid-template-columns: 1fr; }
  .contact, footer { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 540px) {
  nav { width: 100%; justify-content: space-between; }
  h1 { font-size: 39px; }
  .hero-actions .button { width: 100%; }
  .checklist div { grid-template-columns: 1fr; gap: 6px; }
}