:root {
  --ink: #0f1f1a;
  --moss: #1f4d3a;
  --jade: #2f6f55;
  --gold: #b08d57;
  --font-display: "Noto Serif SC", "Songti SC", serif;
  --font-body: "DM Sans", "PingFang SC", "Microsoft YaHei", sans-serif;
}
* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body {
  font-family: var(--font-body);
  color: var(--ink);
  background: #e8efe9;
  overflow-x: hidden;
}
.land-bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  background:
    radial-gradient(ellipse 90% 70% at 50% -10%, rgba(176, 141, 87, 0.28), transparent 55%),
    radial-gradient(ellipse 70% 50% at 100% 80%, rgba(47, 111, 85, 0.22), transparent 50%),
    radial-gradient(ellipse 60% 40% at 0% 60%, rgba(31, 77, 58, 0.18), transparent 45%),
    linear-gradient(165deg, #f3f7f3 0%, #dfe9e2 45%, #c9d9cf 100%);
  animation: landDrift 24s ease-in-out infinite alternate;
}
.land-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(15, 31, 26, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(15, 31, 26, 0.035) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse at 50% 30%, black 20%, transparent 70%);
  opacity: 0.7;
}
@keyframes landDrift {
  from { filter: hue-rotate(0deg); transform: scale(1); }
  to { filter: hue-rotate(8deg); transform: scale(1.03); }
}
.land-nav, .land-hero, .land-foot { position: relative; z-index: 1; }
.land-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.25rem 1.75rem;
  max-width: 1100px;
  margin: 0 auto;
}
.land-brand {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--moss);
  letter-spacing: 0.06em;
}
.land-enter {
  color: var(--moss);
  text-decoration: none;
  font-size: 0.92rem;
  border: 1px solid rgba(31, 77, 58, 0.3);
  padding: 0.45rem 0.9rem;
  border-radius: 999px;
  transition: background 0.25s ease, border-color 0.25s ease;
}
.land-enter:hover { background: rgba(47, 111, 85, 0.1); border-color: var(--jade); }
.land-hero {
  min-height: calc(100vh - 120px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  max-width: 820px;
  margin: 0 auto;
  padding: 2rem 1.75rem 4rem;
  animation: landRise 1.1s ease both;
}
@keyframes landRise {
  from { opacity: 0; transform: translateY(18px); }
  to { opacity: 1; transform: translateY(0); }
}
.land-eyebrow {
  font-size: 0.85rem;
  letter-spacing: 0.18em;
  text-transform: none;
  color: rgba(31, 77, 58, 0.75);
  margin: 0 0 0.75rem;
  animation: landRise 1.2s 0.15s ease both;
}
.land-title {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 9vw, 5rem);
  font-weight: 700;
  line-height: 1.1;
  margin: 0;
  color: var(--moss);
  letter-spacing: 0.08em;
  animation: landRise 1.2s 0.25s ease both;
}
.land-lead {
  margin: 1.25rem 0 0;
  font-size: clamp(1.05rem, 2.4vw, 1.25rem);
  line-height: 1.75;
  color: #2a3832;
  max-width: 28em;
  animation: landRise 1.2s 0.4s ease both;
}
.land-sub {
  margin: 1rem 0 0;
  font-family: var(--font-display);
  font-size: 0.98rem;
  color: var(--gold);
  letter-spacing: 0.04em;
  animation: landRise 1.2s 0.5s ease both;
}
.land-cta { margin-top: 2rem; animation: landRise 1.2s 0.6s ease both; }
.land-btn {
  display: inline-block;
  padding: 0.85rem 1.6rem;
  border-radius: 999px;
  background: var(--moss);
  color: #f4f8f5;
  text-decoration: none;
  font-weight: 600;
  box-shadow: 0 12px 30px rgba(15, 31, 26, 0.18);
  transition: transform 0.2s ease, background 0.2s ease;
}
.land-btn:hover { background: var(--jade); transform: translateY(-2px); }
.land-note {
  margin-top: 1.25rem;
  font-size: 0.85rem;
  color: rgba(15, 31, 26, 0.55);
  animation: landRise 1.2s 0.7s ease both;
}
.land-foot {
  text-align: center;
  padding: 1.5rem;
  font-size: 0.82rem;
  color: rgba(15, 31, 26, 0.5);
}
@media (max-width: 600px) {
  .land-nav { padding: 1rem 1.1rem; }
  .land-hero { padding: 1.5rem 1.1rem 3rem; min-height: calc(100vh - 100px); }
}