:root {
  --bg: #0f1419;
  --panel: #1b2330;
  --panel-2: #222d3f;
  --text: #e6eaf0;
  --muted: #9aa7b8;
  --accent: #4f9cf9;
  --accent-2: #6bbf8a;
  --err: #ff6b6b;
  --radius: 10px;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: radial-gradient(1200px 600px at 70% -10%, #1c2a40 0%, var(--bg) 60%);
  color: var(--text);
  font: 15px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.card {
  width: 100%;
  max-width: 560px;
  background: var(--panel);
  border: 1px solid #2a3548;
  border-radius: var(--radius);
  padding: 28px 30px;
  box-shadow: 0 10px 40px rgba(0,0,0,.35);
}
.card.center { text-align: center; }
h1 { margin: 0 0 6px; font-size: 26px; }
h2 { margin: 22px 0 10px; font-size: 17px; color: var(--accent); }
.sub { margin: 0 0 16px; color: var(--muted); }
label { display: block; margin: 12px 0; font-weight: 600; font-size: 13px; }
input[type=text], input[type=email] {
  width: 100%; margin-top: 6px; padding: 10px 12px;
  background: var(--panel-2); color: var(--text);
  border: 1px solid #33425b; border-radius: 8px; font-size: 14px;
}
input[type=file] { width: 100%; margin-top: 6px; font-size: 13px; }
fieldset { border: 1px solid #33425b; border-radius: 8px; padding: 10px 14px; }
legend { font-weight: 600; font-size: 13px; padding: 0 6px; }
.radio { display: inline-flex; align-items: center; gap: 6px; margin-right: 16px; font-weight: 400; }
.cap-row { display: inline-flex; align-items: center; gap: 8px; margin-top: 6px; }
.cap-row img { border-radius: 6px; background: #fff; height: 50px; width: 180px; object-fit: cover; }
#cap-refresh { cursor: pointer; background: var(--panel-2); color: var(--text); border: 1px solid #33425b; border-radius: 6px; padding: 8px 10px; font-size: 16px; }
.cap-row input { width: 120px; }
.hint { color: var(--muted); font-size: 12px; font-weight: 400; margin: 4px 0 0; }
.req { color: var(--accent); }
.pay ul { margin: 8px 0; padding-left: 18px; }
.pay code { background: var(--panel-2); padding: 2px 8px; border-radius: 6px; font-size: 13px; }
.download { margin: 0 0 18px; }
.dl-row { display: flex; flex-wrap: wrap; gap: 10px; }
.dl {
  display: inline-block; padding: 10px 16px; text-decoration: none;
  background: var(--accent-2); color: var(--text); font-weight: 600; font-size: 14px;
  border: 1px solid #33425b; border-radius: 8px;
}
.dl:hover { background: var(--accent); color: #06101e; }
.primary {
  display: inline-block; margin-top: 18px; text-decoration: none;
  background: var(--accent); color: #06101e; font-weight: 700;
  border: none; border-radius: 8px; padding: 12px 18px; cursor: pointer; font-size: 15px;
  width: 100%; text-align: center;
}
.primary:hover { filter: brightness(1.08); }
.err { color: var(--err); font-size: 13px; margin: 6px 0; }
footer { margin-top: 18px; color: var(--muted); font-size: 12px; }
.hp { position: absolute !important; left: -10000px !important; top: auto !important; width: 1px !important; height: 1px !important; overflow: hidden !important; }