:root {
  --color-primary: #533afd;
  --color-primary-press: #2e2b8c;
  --color-ink: #0d253d;
  --color-ink-mute: #64748d;
  --color-canvas: #ffffff;
  --color-canvas-soft: #f6f9fc;
  --color-hairline: #e3e8ee;
  --color-hairline-input: #a8c3de;
  --font-body: sohne-var, "SF Pro Display", Inter, system-ui, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --rounded-pill: 9999px;
  --rounded-sm: 6px;
  --rounded-lg: 12px;
}

* { box-sizing: border-box; }
html { background: #e8eef4; }
body {
  margin: 0 auto;
  max-width: 390px;
  min-height: 100vh;
  font-family: var(--font-body);
  color: var(--color-ink);
  background: var(--color-canvas);
  font-size: 15px;
  font-weight: 300;
  line-height: 1.4;
  font-feature-settings: "ss01";
  padding-bottom: 72px;
}
a { color: var(--color-primary); text-decoration: none; }

.top {
  padding: 14px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: transparent;
}
.logo { font-weight: 400; color: var(--color-ink); font-size: 20px; letter-spacing: -0.4px; }
.back { font-size: 12px; color: var(--color-ink-mute); }

.hero {
  padding: 28px 16px 32px;
  background:
    radial-gradient(ellipse 80% 80% at 10% 0%, #f5e9d4 0%, transparent 50%),
    radial-gradient(ellipse 70% 70% at 90% 10%, #c9b8ff 0%, transparent 50%),
    var(--color-canvas-soft);
}
.hero h1 {
  font-size: 32px;
  font-weight: 300;
  letter-spacing: -0.64px;
  line-height: 1.1;
  margin: 0 0 8px;
}
.hero p { margin: 0; color: var(--color-ink-mute); font-size: 14px; }

.block { padding: 16px; }
.block h2 { font-size: 20px; font-weight: 300; letter-spacing: -0.2px; 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);
  box-shadow: rgba(0,55,112,0.08) 0 1px 3px;
}
.cell h3 { margin: 0 0 4px; font-size: 16px; font-weight: 300; }
.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 b { font-feature-settings: "tnum", "ss01"; font-weight: 400; }
.row span { color: var(--color-ink-mute); }

.ph {
  background: var(--color-canvas-soft);
  color: var(--color-ink-mute);
  height: 140px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  margin-bottom: 12px;
  border-radius: var(--rounded-lg);
}

form label { display: block; margin: 0 0 4px; font-size: 13px; }
form input, form textarea {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid var(--color-hairline-input);
  border-radius: var(--rounded-sm);
  font: inherit;
  margin-bottom: 12px;
}
form button {
  width: 100%;
  padding: 10px 16px;
  border: 0;
  background: var(--color-primary);
  color: #fff;
  font: inherit;
  font-weight: 400;
  border-radius: var(--rounded-pill);
}

.tab {
  position: fixed;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
  width: 100%;
  max-width: 390px;
  display: flex;
  background: #fff;
  border-top: 1px solid var(--color-hairline);
}
.tab a {
  flex: 1;
  text-align: center;
  padding: 12px 0;
  font-size: 11px;
  color: var(--color-ink-mute);
}
.tab a.on { color: var(--color-primary); font-weight: 400; }

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