:root {
  --bg: #0b0b0f;
  --card: #16161d;
  --line: #2a2a35;
  --text: #f5f5f7;
  --muted: #9a9aa8;
  --cyan: #25f4ee;
  --red: #fe2c55;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Helvetica Neue", "Microsoft YaHei", sans-serif;
  line-height: 1.6;
}

.wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 20px 96px;
}

.hero { padding: 56px 0 32px; }

.tag {
  display: inline-block;
  padding: 4px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--cyan);
  font-size: 13px;
}

h1 {
  margin: 16px 0 12px;
  font-size: clamp(30px, 8vw, 46px);
  line-height: 1.2;
  letter-spacing: -0.5px;
}

h1 em {
  font-style: normal;
  color: var(--red);
  text-shadow: -2px -1px 0 var(--cyan);
}

.sub { margin: 0 0 28px; color: var(--muted); font-size: 16px; }

h2 { margin: 48px 0 16px; font-size: 22px; }

.btn {
  display: inline-block;
  width: 100%;
  padding: 14px 24px;
  border: 0;
  border-radius: 12px;
  background: var(--red);
  color: #fff;
  font-size: 17px;
  font-weight: 600;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
  box-shadow: -3px -3px 0 var(--cyan);
}

.btn:active { transform: translate(-1px, -1px); box-shadow: -2px -2px 0 var(--cyan); }
.btn:disabled { opacity: 0.6; cursor: default; }

.stats { display: flex; gap: 12px; margin-top: 28px; }

.stats div {
  flex: 1;
  padding: 14px 8px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--card);
  text-align: center;
}

.stats b { display: block; font-size: 22px; color: var(--cyan); }
.stats span { font-size: 12px; color: var(--muted); }

.cards { display: grid; gap: 12px; }

.card {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--card);
}

.card h3 { margin: 0 0 6px; font-size: 17px; }
.card p { margin: 0; color: var(--muted); font-size: 14px; }

form { display: grid; gap: 12px; }

input, select {
  width: 100%;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--card);
  color: var(--text);
  font-size: 16px;
}

input:focus, select:focus { outline: 2px solid var(--cyan); outline-offset: 1px; }

.done {
  padding: 20px;
  border: 1px solid var(--cyan);
  border-radius: 14px;
  text-align: center;
}

.sticky {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 12px 20px calc(12px + env(safe-area-inset-bottom));
  background: rgba(11, 11, 15, 0.92);
  backdrop-filter: blur(8px);
  border-top: 1px solid var(--line);
}

.sticky .btn { display: block; max-width: 680px; margin: 0 auto; }

footer { margin-top: 48px; color: var(--muted); font-size: 12px; text-align: center; }
footer a { color: var(--muted); }

@media (min-width: 640px) {
  .cards { grid-template-columns: repeat(3, 1fr); }
}