:root {
  --color-primary: #9fe870;
  --color-on-primary: #0e0f0c;
  --color-ink: #0e0f0c;
  --color-body: #454745;
  --color-mute: #868685;
  --color-canvas: #ffffff;
  --color-canvas-soft: #e8ebe6;
  --color-primary-pale: #e2f6d5;
  --rounded-xl: 24px;
  --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 { background: #d8dbd6; }
body {
  margin: 0 auto;
  max-width: 390px;
  min-height: 100vh;
  font-family: var(--font);
  color: var(--color-ink);
  background: var(--color-canvas-soft);
  line-height: 1.5;
  padding-bottom: 72px;
}
a { color: var(--color-ink); text-decoration: none; }
.top {
  background: #fff; padding: 12px 16px;
  display: flex; align-items: center; justify-content: space-between;
}
.logo { font-family: var(--font-display); font-weight: 900; font-size: 20px; color: var(--color-ink); }
.back { font-size: 12px; color: var(--color-mute); font-weight: 600; }

.hero { padding: 24px 16px 8px; }
.hero h1 {
  font-family: var(--font-display); font-size: 36px; font-weight: 900;
  line-height: 0.9; margin: 0 0 10px;
}
.hero p { margin: 0; color: var(--color-body); font-size: 14px; }

.block { padding: 16px; }
.block h2 { font-family: var(--font-display); font-size: 24px; font-weight: 900; line-height: 0.95; margin: 0 0 12px; }
.cell {
  display: block; background: #fff; border-radius: 24px;
  padding: 16px; margin-bottom: 8px; color: var(--color-ink);
}
.cell:hover { text-decoration: none; }
.cell h3 { margin: 0 0 4px; font-size: 16px; font-weight: 600; }
.cell p { margin: 0; color: var(--color-body); font-size: 13px; }
.row {
  display: flex; justify-content: space-between; gap: 8px;
  padding: 12px 0; font-size: 14px;
}
.row span { color: var(--color-body); }
.row b { font-family: var(--font-display); font-weight: 900; font-size: 22px; }
.ph {
  background: #fff; color: var(--color-mute);
  height: 120px; display: flex; align-items: center; justify-content: center;
  font-size: 13px; margin-bottom: 12px; border-radius: 16px;
}
.converter {
  background: #fff; border: 1px solid var(--color-ink); border-radius: 24px; padding: 16px; margin: 0 16px 8px;
}
.converter .amt { font-family: var(--font-display); font-weight: 900; font-size: 22px; }

form label { display: block; margin: 0 0 4px; font-size: 14px; font-weight: 600; }
form input, form textarea {
  width: 100%; padding: 12px 16px; border: 1px solid var(--color-ink);
  border-radius: 12px; font: inherit; margin-bottom: 12px;
}
form button {
  width: 100%; padding: 12px; border: 0; background: var(--color-primary);
  color: var(--color-on-primary); font: inherit; font-weight: 600; border-radius: 24px;
}

.tab {
  position: fixed; left: 50%; bottom: 8px; transform: translateX(-50%);
  width: calc(100% - 24px); max-width: 366px;
  display: flex; background: var(--color-ink); border-radius: 24px;
}
.tab a {
  flex: 1; text-align: center; padding: 12px 0;
  font-size: 11px; font-weight: 600; color: #e8ebe6;
}
.tab a.on { color: var(--color-primary); }

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