:root {
  --color-primary: #000000;
  --color-ink: #000000;
  --color-on-primary: #ffffff;
  --color-canvas-night: #000000;
  --color-canvas-night-elevated: #0a0a0a;
  --color-shade-40: #a1a1aa;
  --color-shade-50: #71717a;
  --color-hairline-dark: #1e2c31;
  --color-aloe-10: #c1fbd4;
  --color-link-cool-1: #9dabad;
  --rounded-md: 8px;
  --rounded-lg: 12px;
  --rounded-xl: 20px;
  --rounded-pill: 9999px;
  --font-display: "NeueHaasGrotesk Display", Helvetica, Arial, system-ui, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: Inter, Helvetica, Arial, system-ui, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }
html { background: #111; }
body {
  margin: 0 auto;
  max-width: 390px;
  min-height: 100vh;
  font-family: var(--font-body);
  color: var(--color-on-primary);
  background: var(--color-canvas-night);
  line-height: 1.5;
  font-feature-settings: "ss03";
  padding-bottom: 64px;
  font-weight: 420;
}
a { color: var(--color-on-primary); text-decoration: none; }

.top {
  padding: 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo {
  font-family: var(--font-display);
  font-weight: 500;
  letter-spacing: 0.3px;
  color: var(--color-on-primary);
}
.back { font-size: 12px; color: var(--color-link-cool-1); letter-spacing: 0.72px; text-transform: uppercase; }

.hero { padding: 28px 16px 32px; }
.hero h1 {
  font-family: var(--font-display);
  font-size: 36px;
  font-weight: 330;
  line-height: 1.1;
  letter-spacing: 0.5px;
  margin: 0 0 12px;
}
.hero p { margin: 0; color: var(--color-shade-40); font-size: 14px; font-weight: 550; }

.block { padding: 16px; }
.block h2 {
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.72px;
  text-transform: uppercase;
  color: var(--color-link-cool-1);
  margin: 0 0 12px;
}

.cell {
  display: block;
  background: var(--color-canvas-night-elevated);
  border-radius: var(--rounded-lg);
  padding: 16px;
  margin-bottom: 8px;
  color: var(--color-on-primary);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.04);
}
.cell h3 {
  margin: 0 0 4px;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 500;
  letter-spacing: 0.3px;
}
.cell p { margin: 0; color: var(--color-shade-40); font-size: 13px; }

.row {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  padding: 12px 0;
  border-bottom: 1px solid var(--color-hairline-dark);
  font-size: 14px;
}
.row:last-child { border-bottom: 0; }
.row span { color: var(--color-shade-40); }
.row b { font-weight: 550; font-family: var(--font-display); }

.ph {
  background: #1e2c31;
  color: var(--color-shade-40);
  height: 140px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  margin-bottom: 12px;
  border-radius: var(--rounded-xl);
}

form label { display: block; margin: 0 0 4px; font-size: 13px; color: var(--color-shade-40); }
form input, form textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--color-hairline-dark);
  background: var(--color-canvas-night-elevated);
  color: var(--color-on-primary);
  font: inherit;
  margin-bottom: 12px;
  border-radius: var(--rounded-md);
  min-height: 44px;
}
form button {
  width: 100%;
  padding: 12px 24px;
  border: 2px solid var(--color-on-primary);
  background: transparent;
  color: var(--color-on-primary);
  font-size: 16px;
  font-weight: 420;
  border-radius: var(--rounded-pill);
}

.tab {
  position: fixed;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
  width: 100%;
  max-width: 390px;
  display: flex;
  background: var(--color-canvas-night);
  border-top: 1px solid var(--color-hairline-dark);
}
.tab a {
  flex: 1;
  text-align: center;
  padding: 12px 0;
  font-size: 11px;
  color: var(--color-shade-50);
  letter-spacing: 0.28px;
}
.tab a.on { color: var(--color-on-primary); font-weight: 550; }

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