:root {
  --forest: #43553f;
  --forest-deep: #2f3d2c;
  --lime: #c6d93b;
  --bg: #f6f7f2;
  --card: #ffffff;
  --ink: #1e241c;
  --muted: #5d6656;
  --line: #dfe4d4;
  --wrap: 1120px;
  --radius: 14px;
  --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }

a { color: var(--forest); text-decoration: none; }

h1, h2, h3 { line-height: 1.25; margin: 0 0 0.6em; letter-spacing: 0.01em; }

h1 { font-size: clamp(2.1rem, 5vw, 3.4rem); font-weight: 700; }
h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); }
h3 { font-size: 1.12rem; }

p { margin: 0 0 1em; }

.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 24px;
}

.wrap.narrow { max-width: 820px; }

.muted { color: var(--muted); font-size: 0.92rem; }

/* ---------- header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(246, 247, 242, 0.94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(8px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 72px;
}

.brand { display: flex; align-items: center; }
.brand-logo { display: block; height: 44px; width: auto; }

.site-nav {
  display: flex;
  align-items: center;
  gap: 26px;
  font-size: 0.95rem;
}

.site-nav a { color: var(--ink); padding: 6px 0; border-bottom: 2px solid transparent; }
.site-nav a:hover { border-bottom-color: var(--lime); }

.site-nav .nav-cta {
  color: #f8f9f3;
  background: var(--forest);
  padding: 9px 18px;
  border-radius: 999px;
  border-bottom: 0;
}
.site-nav .nav-cta:hover { background: var(--forest-deep); }

.nav-toggle {
  display: none;
  font: inherit;
  font-size: 0.95rem;
  color: var(--forest);
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 7px 14px;
  cursor: pointer;
}

/* ---------- hero ---------- */

.hero {
  padding: 84px 0 72px;
  text-align: center;
  background:
    radial-gradient(circle at 12% 18%, rgba(198, 217, 59, 0.22), transparent 46%),
    radial-gradient(circle at 88% 8%, rgba(67, 85, 63, 0.12), transparent 42%);
}

.hero-inner { max-width: 880px; }

.eyebrow {
  font-size: 0.78rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 18px;
}

.hero h1 { margin-bottom: 22px; }

.hero-lead {
  font-size: 1.08rem;
  color: var(--muted);
  max-width: 620px;
  margin: 0 auto 32px;
}

.hero-actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 58px;
}

.btn {
  display: inline-block;
  padding: 13px 28px;
  border-radius: 999px;
  font-size: 0.98rem;
  font-weight: 600;
  transition: transform 0.18s ease, background 0.18s ease, color 0.18s ease;
}

.btn:hover { transform: translateY(-2px); }

.btn-solid { background: var(--forest); color: #f8f9f3; }
.btn-solid:hover { background: var(--forest-deep); }

.btn-ghost {
  background: transparent;
  color: var(--forest);
  border: 1.5px solid var(--forest);
}
.btn-ghost:hover { background: var(--forest); color: #f8f9f3; }

.hero-points {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  text-align: left;
}

.hero-points li {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px 22px 20px;
}

.hero-points strong { display: block; margin: 10px 0 4px; font-size: 1.02rem; }
.hero-points span:last-child { color: var(--muted); font-size: 0.92rem; line-height: 1.6; }

/* ---------- shared section ---------- */

.section { padding: 76px 0; }

.section-alt {
  background: #eef1e6;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.section-head { margin-bottom: 40px; max-width: 640px; }

.section-sub { color: var(--muted); margin-bottom: 0; }

.eyebrow + h2 { margin-top: 0; }

/* ---------- numbers ---------- */

.dot-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--lime);
  color: var(--forest-deep);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  flex: 0 0 auto;
}

/* ---------- footer ---------- */

.site-footer {
  background: var(--forest);
  color: #e7ebdc;
  padding: 34px 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.site-footer p { margin: 0; font-size: 0.92rem; }
.site-footer .muted { color: #bcc6ad; }

/* ---------- reveal ---------- */

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.is-visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ---------- responsive ---------- */

@media (max-width: 900px) {
  .hero-points { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .header-inner { min-height: 62px; }
  .brand-logo { height: 36px; }

  .nav-toggle { display: block; }

  .site-nav {
    display: none;
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 24px 20px;
    background: var(--bg);
    border-bottom: 1px solid var(--line);
  }

  .site-nav.is-open { display: flex; }

  .site-nav a { padding: 12px 0; border-bottom: 1px solid var(--line); }

  .site-nav .nav-cta {
    margin-top: 14px;
    text-align: center;
    border-bottom: 0;
  }

  .hero { padding: 56px 0 52px; }
  .hero-actions { margin-bottom: 40px; }
  .section { padding: 54px 0; }
  .btn { padding: 12px 22px; }
}