:root {
  --color-primary: #1b1938;
  --color-primary-deep: #0e0c1f;
  --color-on-primary: #ffffff;
  --color-ink: #292827;
  --color-ink-mute: #73706d;
  --color-ink-faint: #9a9794;
  --color-canvas: #ffffff;
  --color-canvas-soft: #fafaf8;
  --color-surface-violet-soft: #c9b4fa;
  --color-surface-teal-deep: #0e3030;
  --color-surface-teal-mid: #155555;
  --color-hairline: #e8e4dd;
  --color-hairline-dark: #3f3a52;
  --color-on-dark-mute: #bcbac9;
  --color-on-dark-faint: #5a5772;
  --rounded-xs: 4px;
  --rounded-sm: 6px;
  --rounded-md: 8px;
  --rounded-lg: 12px;
  --rounded-xl: 16px;
  --rounded-full: 9999px;
  --space-sm: 8px;
  --space-md: 12px;
  --space-lg: 16px;
  --space-xl: 24px;
  --font: "Super Sans VF", system-ui, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }
html { background: #0e0c1f; }
body {
  margin: 0 auto;
  max-width: 390px;
  min-height: 100vh;
  font-family: var(--font);
  color: var(--color-ink);
  background: var(--color-canvas);
  line-height: 1.5;
  font-size: 16px;
  font-weight: 460;
  padding-bottom: 72px;
}
a { color: var(--color-ink); text-decoration: none; }

.top {
  background: var(--color-primary);
  color: var(--color-on-primary);
  padding: 14px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo { font-weight: 540; color: var(--color-on-primary); }
.back { font-size: 12px; color: var(--color-on-dark-mute); }

.hero {
  padding: 32px 16px 40px;
  background:
    radial-gradient(ellipse at 90% 20%, rgba(201, 180, 250, 0.4) 0%, transparent 50%),
    linear-gradient(180deg, var(--color-primary), var(--color-primary-deep));
  color: var(--color-on-primary);
}
.hero h1 {
  font-size: 36px;
  font-weight: 540;
  line-height: 0.96;
  margin: 0 0 10px;
}
.hero p { margin: 0; color: var(--color-on-dark-mute); font-size: 14px; }

.block { padding: 20px 16px; border-bottom: 1px solid var(--color-hairline); }
.block.soft { background: var(--color-canvas-soft); }
.block h2 {
  font-size: 22px;
  font-weight: 460;
  letter-spacing: -0.315px;
  margin: 0 0 12px;
}

.cell {
  display: block;
  background: var(--color-canvas);
  border: 1px solid var(--color-hairline);
  border-radius: var(--rounded-lg);
  padding: 16px;
  margin-bottom: 8px;
  color: var(--color-ink);
}
.cell h3 { margin: 0 0 4px; font-size: 16px; font-weight: 540; }
.cell p { margin: 0; color: var(--color-ink-mute); font-size: 13px; }

.row {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  padding: 12px 0;
  border-bottom: 1px solid var(--color-hairline);
  font-size: 14px;
}
.row:last-child { border-bottom: 0; }
.row span { color: var(--color-ink-mute); }

.ph {
  background: #eceae4;
  color: var(--color-ink-faint);
  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: 14px; }
form input, form textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--color-hairline);
  border-radius: var(--rounded-sm);
  font: inherit;
  margin-bottom: 12px;
  background: var(--color-canvas);
}
form button {
  width: 100%;
  padding: 12px 20px;
  border: 0;
  background: var(--color-primary);
  color: var(--color-on-primary);
  font: inherit;
  font-weight: 700;
  border-radius: var(--rounded-md);
}

.teal {
  background: var(--color-surface-teal-deep);
  color: var(--color-on-primary);
  padding: 28px 16px;
}
.teal h2 { margin: 0 0 12px; font-size: 22px; font-weight: 540; }
.teal .btn {
  display: inline-block;
  background: var(--color-canvas);
  color: var(--color-surface-teal-deep);
  padding: 12px 20px;
  border-radius: var(--rounded-md);
  font-weight: 700;
}

.tab {
  position: fixed;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
  width: 100%;
  max-width: 390px;
  display: flex;
  background: var(--color-primary);
  border-top: 1px solid var(--color-hairline-dark);
}
.tab a {
  flex: 1;
  text-align: center;
  padding: 12px 0 14px;
  font-size: 11px;
  font-weight: 540;
  color: var(--color-on-dark-faint);
}
.tab a.on { color: var(--color-surface-violet-soft); }

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