:root {
  --color-primary: #00d992;
  --color-primary-soft: #2fd6a1;
  --color-primary-deep: #10b981;
  --color-on-primary: #101010;
  --color-ink: #f2f2f2;
  --color-ink-strong: #ffffff;
  --color-body: #bdbdbd;
  --color-mute: #8b949e;
  --color-hairline: #3d3a39;
  --color-canvas: #101010;
  --color-canvas-soft: #1a1a1a;
  --rounded-sm: 6px;
  --rounded-md: 8px;
  --rounded-pill: 9999px;
  --font: Inter, system-ui, Segoe UI, PingFang SC, Microsoft YaHei, sans-serif;
  --font-mono: SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}
* { box-sizing: border-box; }
html { background: #050505; }
body {
  margin: 0 auto;
  max-width: 390px;
  min-height: 100vh;
  font-family: var(--font);
  color: var(--color-ink);
  background: var(--color-canvas);
  line-height: 1.55;
  padding-bottom: 64px;
}
a { color: var(--color-primary-deep); text-decoration: none; }
.top {
  background: var(--color-canvas);
  border-bottom: 1px solid var(--color-hairline);
  padding: 12px 16px; display: flex; align-items: center; justify-content: space-between;
}
.logo { color: var(--color-ink-strong); font-weight: 600; display: flex; align-items: center; gap: 6px; }
.bolt { color: var(--color-primary); }
.back { font-size: 12px; color: var(--color-mute); }

.hero { padding: 24px 16px; border-bottom: 1px dashed rgba(79, 93, 117, 0.4); }
.hero .eyebrow {
  font-size: 11px; font-weight: 600; letter-spacing: 2.52px;
  text-transform: uppercase; color: var(--color-primary); margin: 0 0 8px;
}
.hero h1 {
  font-size: 28px; font-weight: 400; letter-spacing: -0.65px;
  margin: 0 0 8px; color: var(--color-ink-strong); line-height: 1.1;
}
.hero p { margin: 0; color: var(--color-body); font-size: 14px; }

.block { padding: 16px; border-bottom: 1px dashed rgba(79, 93, 117, 0.4); }
.block h2 { font-size: 20px; font-weight: 400; margin: 0 0 12px; letter-spacing: -0.4px; color: #fff; }
.cell {
  display: block; border: 1px solid var(--color-hairline); border-radius: 8px;
  padding: 12px; margin-bottom: 8px; color: var(--color-ink); background: var(--color-canvas);
}
.cell:hover { text-decoration: none; border-color: var(--color-primary); }
.cell h3 { margin: 0 0 4px; font-size: 15px; font-weight: 600; color: #fff; }
.cell p { margin: 0; color: var(--color-body); font-size: 13px; }
.row {
  display: flex; justify-content: space-between; gap: 8px;
  padding: 10px 0; border-bottom: 1px solid var(--color-hairline); font-size: 14px;
}
.row:last-child { border-bottom: 0; }
.row span { color: var(--color-mute); }
.row b { font-family: var(--font-mono); color: var(--color-primary); font-weight: 400; }
.ph {
  background: var(--color-canvas-soft); color: var(--color-mute);
  height: 120px; display: flex; align-items: center; justify-content: center;
  font-size: 13px; margin-bottom: 12px; border-radius: 8px; border: 1px solid var(--color-hairline);
}
.code-chip {
  font-family: var(--font-mono); font-size: 12px; background: var(--color-canvas-soft);
  padding: 8px 10px; border-radius: 6px; display: block; color: #f5f6f7; margin-top: 8px;
}

form label { display: block; margin: 0 0 4px; font-size: 14px; color: var(--color-body); }
form input, form textarea {
  width: 100%; padding: 12px 16px; border: 1px solid var(--color-hairline);
  border-radius: 6px; font: inherit; margin-bottom: 12px;
  background: var(--color-canvas-soft); color: var(--color-ink);
}
form button {
  width: 100%; padding: 12px; border: 0; background: var(--color-primary);
  color: var(--color-on-primary); font: inherit; font-weight: 600; border-radius: 6px;
}

.tab {
  position: fixed; left: 50%; bottom: 0; transform: translateX(-50%);
  width: 100%; max-width: 390px;
  display: flex; background: #0c0c0c; border-top: 1px solid var(--color-hairline);
}
.tab a { flex: 1; text-align: center; padding: 10px 0 12px; font-size: 11px; color: var(--color-mute); }
.tab a.on { color: var(--color-primary); font-weight: 600; }

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