:root {
  --bg: #f4f7f5;
  --paper: #fffcf8;
  --ink: #1b2f29;
  --muted: #5d726a;
  --green: #167b65;
  --deep: #103e37;
  --pine: #176450;
  --pale: #e6f2eb;
  --line: #dce6e1;
  --amber: #9e641f;
  --red: #b53e3c;
  --shadow: 0 24px 60px rgba(16, 62, 55, 0.12);
  --sans: "Segoe UI", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --serif: "Palatino Linotype", Palatino, "Songti SC", "Noto Serif SC", "STSong", serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(1200px 480px at 90% -10%, rgba(23, 100, 80, 0.12), transparent 60%),
    linear-gradient(180deg, #eef4f1 0%, var(--bg) 280px);
  font-family: var(--sans);
  line-height: 1.65;
}
img { max-width: 100%; }
a { color: inherit; }
.wrap { width: min(1120px, calc(100% - 40px)); margin: 0 auto; }

.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 0;
  background: rgba(244, 247, 245, 0.88);
  backdrop-filter: blur(14px);
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-weight: 700;
  letter-spacing: 0.02em;
}
.mark {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: linear-gradient(145deg, var(--pine), var(--deep));
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.12);
  position: relative;
}
.mark::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 12px;
  width: 10px;
  height: 7px;
  border-radius: 2px;
  background: #dccb9b;
}
.nav-links { display: flex; gap: 22px; align-items: center; }
.nav-links a { text-decoration: none; color: var(--muted); font-size: 14px; }
.nav-links a:hover { color: var(--ink); }
.pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border-radius: 999px;
  background: var(--pale);
  color: var(--green);
  padding: 6px 12px;
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
}

.hero {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 48px;
  align-items: center;
  padding: 28px 0 64px;
}
.eyebrow {
  margin: 0 0 12px;
  letter-spacing: 0.22em;
  font-size: 12px;
  color: var(--green);
  font-weight: 700;
}
h1 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(40px, 5vw, 68px);
  line-height: 1.12;
  font-weight: 600;
}
.lede {
  margin: 18px 0 0;
  max-width: 36em;
  font-size: 18px;
  color: var(--muted);
}
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border-radius: 14px;
  text-decoration: none;
  font-weight: 700;
}
.button.primary { background: var(--pine); color: white; }
.button.ghost { background: white; color: var(--ink); box-shadow: inset 0 0 0 1px var(--line); }
.facts {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin: 32px 0 0;
  padding: 0;
  list-style: none;
}
.facts li {
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 14px 12px;
}
.facts strong { display: block; font-size: 15px; }
.facts span { display: block; margin-top: 4px; color: var(--muted); font-size: 12px; }

.stage { position: relative; min-height: 420px; }
.card {
  position: absolute;
  width: min(360px, 100%);
  aspect-ratio: 1.68 / 1;
  border-radius: 22px;
  padding: 22px;
  color: white;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.card.pine { background: linear-gradient(145deg, #176450, #103e37); top: 18px; left: 8px; transform: rotate(-7deg); }
.card.mist { background: linear-gradient(145deg, #3e647c, #263f59); top: 92px; left: 78px; transform: rotate(6deg); }
.chip {
  width: 38px;
  height: 28px;
  border-radius: 6px;
  background: linear-gradient(180deg, #ead7ad, #c7ad78);
}
.card small { opacity: 0.82; letter-spacing: 0.04em; }
.card .num { font-size: 18px; letter-spacing: 0.16em; margin: 8px 0 0; }
.card footer { display: flex; justify-content: space-between; font-size: 12px; opacity: 0.9; }

section { padding: 28px 0 64px; }
.section-head { max-width: 640px; margin-bottom: 28px; }
h2 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(30px, 4vw, 44px);
  line-height: 1.2;
  font-weight: 600;
}
.section-head p { margin: 10px 0 0; color: var(--muted); }

.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.panel {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 22px;
}
.panel h3 { margin: 12px 0 8px; font-size: 18px; }
.panel p { margin: 0; color: var(--muted); }
.index {
  display: inline-flex;
  width: 36px;
  height: 36px;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  background: var(--pale);
  color: var(--green);
  font-weight: 700;
}

.steps { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.step { display: grid; grid-template-columns: auto 1fr; gap: 16px; align-items: start; }
.numeral {
  font-family: var(--serif);
  font-size: 34px;
  color: var(--pine);
  line-height: 1;
}

.split { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 18px; }
.notice {
  background: var(--deep);
  color: #e7f3ee;
  border-radius: 28px;
  padding: 32px;
}
.notice h2 { color: white; }
.notice li { margin: 10px 0; }
.checklist { margin: 18px 0 0; padding-left: 18px; }
.soft { background: white; border: 1px solid var(--line); border-radius: 28px; padding: 32px; }
.soft h3 { margin-top: 0; }
.row {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 0;
  border-top: 1px solid var(--line);
}
.row:first-of-type { border-top: 0; }
.row span { color: var(--muted); }

.limits { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.limits article {
  padding: 18px 18px 16px;
  border-radius: 18px;
  background: #fff;
  border: 1px solid var(--line);
}
.limits h3 { margin: 0 0 6px; font-size: 16px; }
.limits p { margin: 0; color: var(--muted); font-size: 14px; }

footer.site {
  padding: 28px 0 48px;
  color: var(--muted);
  display: flex;
  justify-content: space-between;
  gap: 16px;
  border-top: 1px solid var(--line);
  font-size: 14px;
}

.missing { min-height: 70vh; display: grid; place-items: center; text-align: center; }
.missing h1 { font-size: 56px; }

@media (max-width: 860px) {
  .hero, .grid, .steps, .split, .limits, .facts { grid-template-columns: 1fr; }
  .nav-links a:not(.pill) { display: none; }
  .stage { min-height: 360px; }
  .card.mist { left: 36px; }
  footer.site { flex-direction: column; }
}