:root {
  --color-primary: #f36458;
  --color-black: #0b0b0b;
  --color-electric-blue: #0052ef;
  --color-surface: #212121;
  --color-medium-dark: #353535;
  --color-white: #ffffff;
  --color-silver: #b9b9b9;
  --color-medium-gray: #797979;
  --color-neon-green: #19d600;
  --rounded-xs: 3px;
  --rounded-md: 6px;
  --rounded-pill: 99999px;
  --font-display: waldenburgNormal, Inter, "Space Grotesk", system-ui, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: waldenburgNormal, Inter, "Space Grotesk", system-ui, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, Menlo, Consolas, system-ui, "Segoe UI", "PingFang SC", "Microsoft YaHei", monospace;
}

* { 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-silver);
  background: var(--color-black);
  line-height: 1.5;
  padding-bottom: 64px;
}
a { color: var(--color-silver); text-decoration: none; }
a:hover { color: var(--color-electric-blue); }

.top {
  padding: 14px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--color-surface);
}
.logo { color: var(--color-white); font-size: 15px; }
.back { font-size: 11px; color: var(--color-medium-gray); font-family: var(--font-mono); text-transform: uppercase; }

.hero { padding: 28px 16px 32px; }
.hero h1 {
  font-size: 32px;
  font-weight: 400;
  line-height: 1.08;
  letter-spacing: -1.2px;
  color: var(--color-white);
  margin: 0 0 10px;
}
.hero p { margin: 0; color: var(--color-silver); font-size: 14px; }

.block { padding: 16px; border-bottom: 1px solid var(--color-surface); }
.block h2 {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  color: var(--color-medium-gray);
  margin: 0 0 12px;
}

.cell {
  display: block;
  background: var(--color-surface);
  border: 1px solid var(--color-medium-dark);
  border-radius: var(--rounded-md);
  padding: 16px;
  margin-bottom: 8px;
  color: var(--color-white);
}
.cell:hover { color: var(--color-white); }
.cell h3 { margin: 0 0 4px; font-size: 16px; font-weight: 425; letter-spacing: -0.2px; }
.cell p { margin: 0; color: var(--color-silver); font-size: 13px; }

.row {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  padding: 10px 0;
  border-bottom: 1px solid var(--color-surface);
  font-size: 14px;
  color: var(--color-white);
}
.row:last-child { border-bottom: 0; }
.row span { color: var(--color-medium-gray); font-family: var(--font-mono); font-size: 12px; }
.row b { font-weight: 400; }

.ph {
  background: var(--color-medium-dark);
  color: var(--color-medium-gray);
  height: 120px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  margin-bottom: 12px;
  border-radius: var(--rounded-md);
}

form label { display: block; margin: 0 0 4px; font-size: 13px; color: var(--color-medium-gray); }
form input, form textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--color-surface);
  background: var(--color-black);
  color: var(--color-silver);
  font: inherit;
  margin-bottom: 12px;
  border-radius: var(--rounded-xs);
  min-height: 44px;
}
form button {
  width: 100%;
  padding: 10px 16px;
  border: none;
  background: var(--color-primary);
  color: var(--color-white);
  font-size: 16px;
  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-black);
  border-top: 1px solid var(--color-surface);
}
.tab a {
  flex: 1;
  text-align: center;
  padding: 12px 0;
  font-size: 11px;
  color: var(--color-medium-gray);
  font-family: var(--font-mono);
  text-transform: uppercase;
}
.tab a.on { color: var(--color-primary); }

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