:root {
  --color-primary: #9fe870;
  --color-on-primary: #0e0f0c;
  --color-primary-active: #cdffad;
  --color-primary-neutral: #c5edab;
  --color-primary-pale: #e2f6d5;
  --color-ink: #0e0f0c;
  --color-ink-deep: #163300;
  --color-body: #454745;
  --color-mute: #868685;
  --color-canvas: #ffffff;
  --color-canvas-soft: #e8ebe6;
  --color-positive: #2ead4b;
  --color-positive-deep: #054d28;
  --color-warning: #ffd11a;
  --color-negative: #d03238;
  --rounded-none: 0px;
  --rounded-sm: 8px;
  --rounded-md: 12px;
  --rounded-lg: 16px;
  --rounded-xl: 24px;
  --rounded-pill: 9999px;
  --rounded-full: 9999px;
  --space-xxs: 2px;
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 12px;
  --space-lg: 16px;
  --space-xl: 24px;
  --space-2xl: 32px;
  --space-3xl: 48px;
  --font-display: "Wise Sans", Inter, system-ui, Segoe UI, PingFang SC, Microsoft YaHei, sans-serif;
  --font: Inter, system-ui, Segoe UI, PingFang SC, Microsoft YaHei, sans-serif;
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  font-family: var(--font);
  color: var(--color-ink);
  background: var(--color-canvas);
  line-height: 1.5;
  font-size: 16px;
}
a { color: var(--color-ink); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { max-width: 1120px; margin: 0 auto; padding: 0 var(--space-xl); }

.header { background: var(--color-canvas); }
.header-inner {
  display: flex; align-items: center; gap: 24px;
  min-height: 64px; flex-wrap: wrap; padding: 12px 0;
}
.logo {
  font-family: var(--font-display); color: var(--color-ink);
  font-weight: 900; font-size: 22px; letter-spacing: -0.04em;
}
.logo:hover { text-decoration: none; }
.nav { display: flex; flex-wrap: wrap; gap: 4px 18px; flex: 1; }
.nav a { color: var(--color-ink); font-size: 14px; font-weight: 600; }
.nav a.on { text-decoration: underline; }
.back { margin-left: auto; font-size: 13px; color: var(--color-mute); }

.hero {
  background: var(--color-canvas-soft);
  padding: 56px 0 64px;
}
.hero-split {
  display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 32px; align-items: center;
}
.hero h1 {
  font-family: var(--font-display);
  margin: 0 0 16px;
  font-size: clamp(40px, 7vw, 64px);
  font-weight: 900; line-height: 0.85;
  max-width: 12ch;
}
.hero p { margin: 0 0 24px; color: var(--color-body); max-width: 34em; font-size: 20px; line-height: 30px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }

.converter {
  background: #fff; border: 1px solid var(--color-ink);
  border-radius: 24px; padding: 24px;
}
.converter .row {
  display: flex; justify-content: space-between; align-items: baseline;
  padding: 12px 0; border-bottom: 1px solid var(--color-canvas-soft);
}
.converter .amt { font-family: var(--font-display); font-weight: 900; font-size: 28px; }
.converter .ccy { font-weight: 600; font-size: 14px; }
.converter .hint { color: var(--color-mute); font-size: 12px; margin-top: 12px; }

.btn {
  display: inline-block;
  padding: 12px 24px;
  border-radius: 24px;
  font: inherit; font-size: 16px; font-weight: 600; line-height: 24px;
  cursor: pointer; border: 1px solid transparent;
}
.btn:hover { text-decoration: none; }
.btn-primary { background: var(--color-primary); color: var(--color-on-primary); }
.btn-secondary { background: var(--color-canvas-soft); color: var(--color-ink); }
.btn-tertiary { background: #fff; color: var(--color-ink); border-color: var(--color-ink); }

.section { padding: 48px 0; }
.section.sage { background: var(--color-canvas-soft); }
.section h2 {
  font-family: var(--font-display);
  font-size: 40px; font-weight: 900; line-height: 0.85; margin: 0 0 24px;
}
.eyebrow { font-size: 14px; font-weight: 600; margin: 0 0 8px; color: var(--color-body); }
.muted { color: var(--color-body); }

.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.card {
  background: #fff;
  border-radius: 24px;
  padding: 24px;
}
.card.sage { background: var(--color-canvas-soft); }
.card.green { background: var(--color-primary-pale); }
.card.dark { background: var(--color-ink); color: var(--color-primary); }
.card.dark p { color: #c5edab; }
.card h3 { margin: 0 0 8px; font-size: 24px; font-weight: 600; letter-spacing: -0.48px; }
.card p { margin: 0; color: var(--color-body); font-size: 16px; }
.card.stat h3 { font-family: var(--font-display); font-size: 40px; font-weight: 900; line-height: 0.85; }
.badge {
  display: inline-block; background: var(--color-primary-pale); color: var(--color-positive-deep);
  border-radius: 9999px; padding: 4px 12px; font-size: 14px; font-weight: 600; margin-bottom: 8px;
}

.list { list-style: none; margin: 0; padding: 0; }
.list li { padding: 14px 0; border-bottom: 1px solid var(--color-canvas-soft); }
.list li:last-child { border-bottom: 0; }
.list .date { color: var(--color-mute); font-size: 12px; margin-right: 12px; font-weight: 600; }

.ph {
  background: var(--color-canvas-soft); color: var(--color-mute);
  height: 140px; display: flex; align-items: center; justify-content: center;
  font-size: 13px; margin-bottom: 12px; border-radius: 16px;
}

form label { display: block; margin: 0 0 4px; font-size: 14px; font-weight: 600; }
form input, form textarea {
  width: 100%; max-width: 480px; padding: 12px 16px;
  border: 1px solid var(--color-ink); border-radius: 12px;
  font: inherit; margin-bottom: 12px; background: #fff;
}
form button { background: var(--color-primary); color: var(--color-on-primary); border: 0; }

.footer {
  background: var(--color-ink); color: var(--color-canvas-soft);
  padding: 48px 0; font-size: 14px;
}
.footer p { margin: 0 0 6px; }
.footer a { color: var(--color-primary); }

@media (max-width: 800px) {
  .hero-split, .grid, .grid-2 { grid-template-columns: 1fr; }
  .hero h1 { font-size: 48px; }
}

.ph { overflow: hidden; }
.ph img { width: 100%; height: 100%; object-fit: cover; display: block; }